/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 NUM_FUNCTIONS --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/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:02:15,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:02:15,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:02:15,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:02:15,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:02:15,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:02:15,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:02:15,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:02:15,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:02:15,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:02:15,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:02:15,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:02:15,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:02:15,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:02:15,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:02:15,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:02:15,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:02:15,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:02:15,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:02:15,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:02:15,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:02:15,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:02:15,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:02:15,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:02:15,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:02:15,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:02:15,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:02:15,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:02:15,867 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 [2020-07-19 23:02:15,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:02:15,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:02:15,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:02:15,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:02:15,890 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:02:15,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:02:15,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:02:15,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:02:15,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:02:15,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:02:15,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:02:15,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:02:15,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:02:15,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:02:15,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:02:15,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:02:15,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:02:15,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:02:15,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:02:15,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:02:15,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:02:15,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:02:15,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:02:15,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:02:15,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:02:15,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:02:15,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:02:15,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:02:15,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:02:15,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:02:16,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:02:16,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:02:16,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:02:16,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:02:16,224 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:02:16,225 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-19 23:02:16,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ef9fbe4/20021edeee6641c7bd651291a6f24d00/FLAG69b5340da [2020-07-19 23:02:16,835 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:02:16,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-19 23:02:16,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ef9fbe4/20021edeee6641c7bd651291a6f24d00/FLAG69b5340da [2020-07-19 23:02:17,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ef9fbe4/20021edeee6641c7bd651291a6f24d00 [2020-07-19 23:02:17,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:02:17,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:02:17,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:02:17,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:02:17,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:02:17,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e02ae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17, skipping insertion in model container [2020-07-19 23:02:17,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:02:17,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:02:17,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:02:17,471 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:02:17,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:02:17,504 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:02:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17 WrapperNode [2020-07-19 23:02:17,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:02:17,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:02:17,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:02:17,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:02:17,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (1/1) ... [2020-07-19 23:02:17,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:02:17,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:02:17,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:02:17,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:02:17,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (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 [2020-07-19 23:02:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:02:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:02:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-19 23:02:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:02:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:02:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:02:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-19 23:02:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:02:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:02:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:02:17,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:02:17,880 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:02:17,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:17 BoogieIcfgContainer [2020-07-19 23:02:17,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:02:17,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:02:17,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:02:17,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:02:17,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:02:17" (1/3) ... [2020-07-19 23:02:17,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cbc185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:17, skipping insertion in model container [2020-07-19 23:02:17,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:02:17" (2/3) ... [2020-07-19 23:02:17,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cbc185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:02:17, skipping insertion in model container [2020-07-19 23:02:17,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:02:17" (3/3) ... [2020-07-19 23:02:17,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-07-19 23:02:17,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:02:17,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:02:17,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:02:17,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:02:17,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:02:17,990 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:02:17,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:02:17,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:02:17,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:02:17,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:02:17,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:02:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-19 23:02:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:02:18,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:18,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:18,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-07-19 23:02:18,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:18,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820418853] [2020-07-19 23:02:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:02:18,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820418853] [2020-07-19 23:02:18,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:02:18,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:02:18,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921958550] [2020-07-19 23:02:18,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:02:18,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:02:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:02:18,272 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-19 23:02:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:18,414 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-19 23:02:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:02:18,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-19 23:02:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:18,428 INFO L225 Difference]: With dead ends: 36 [2020-07-19 23:02:18,428 INFO L226 Difference]: Without dead ends: 22 [2020-07-19 23:02:18,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:02:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-19 23:02:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-19 23:02:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-19 23:02:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-19 23:02:18,487 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-07-19 23:02:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:18,488 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-19 23:02:18,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:02:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-19 23:02:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-19 23:02:18,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:18,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:18,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:02:18,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-07-19 23:02:18,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:18,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502462941] [2020-07-19 23:02:18,494 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:02:18,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502462941] [2020-07-19 23:02:18,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:02:18,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:02:18,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459470577] [2020-07-19 23:02:18,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:02:18,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:02:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:02:18,567 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-07-19 23:02:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:18,613 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-07-19 23:02:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:02:18,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-19 23:02:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:18,616 INFO L225 Difference]: With dead ends: 32 [2020-07-19 23:02:18,616 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 23:02:18,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:02:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 23:02:18,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-19 23:02:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-19 23:02:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-19 23:02:18,628 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-19 23:02:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:18,629 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-19 23:02:18,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:02:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-19 23:02:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 23:02:18,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:18,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:18,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:02:18,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-07-19 23:02:18,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:18,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212826297] [2020-07-19 23:02:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:02:18,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212826297] [2020-07-19 23:02:18,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814541355] [2020-07-19 23:02:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@666ba50f 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 [2020-07-19 23:02:18,902 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@666ba50f issued 2 check-sat command(s) [2020-07-19 23:02:18,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:18,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:02:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 23:02:18,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:18,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-19 23:02:18,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142072000] [2020-07-19 23:02:18,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 23:02:18,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:18,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 23:02:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:02:19,003 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-07-19 23:02:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:19,151 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2020-07-19 23:02:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 23:02:19,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-07-19 23:02:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:19,153 INFO L225 Difference]: With dead ends: 52 [2020-07-19 23:02:19,154 INFO L226 Difference]: Without dead ends: 34 [2020-07-19 23:02:19,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:02:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-19 23:02:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-19 23:02:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:02:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-19 23:02:19,165 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 20 [2020-07-19 23:02:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:19,166 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-19 23:02:19,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 23:02:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-07-19 23:02:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 23:02:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:19,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:19,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:02:19,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-07-19 23:02:19,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:19,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972509498] [2020-07-19 23:02:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-19 23:02:19,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972509498] [2020-07-19 23:02:19,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877868417] [2020-07-19 23:02:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20b1fe77 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:19,567 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20b1fe77 issued 2 check-sat command(s) [2020-07-19 23:02:19,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:19,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-19 23:02:19,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-19 23:02:19,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:19,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-19 23:02:19,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400336793] [2020-07-19 23:02:19,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:02:19,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:02:19,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:02:19,622 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 9 states. [2020-07-19 23:02:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:19,800 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-19 23:02:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:02:19,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-19 23:02:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:19,803 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:02:19,803 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 23:02:19,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:02:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 23:02:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-19 23:02:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-19 23:02:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-19 23:02:19,813 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 27 [2020-07-19 23:02:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:19,814 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-19 23:02:19,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:02:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-19 23:02:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-19 23:02:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:19,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:20,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:20,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-07-19 23:02:20,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:20,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460421088] [2020-07-19 23:02:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-19 23:02:20,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460421088] [2020-07-19 23:02:20,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96759897] [2020-07-19 23:02:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@612190cc 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 [2020-07-19 23:02:20,250 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@612190cc issued 2 check-sat command(s) [2020-07-19 23:02:20,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:20,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-19 23:02:20,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-19 23:02:20,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:20,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-19 23:02:20,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210051829] [2020-07-19 23:02:20,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 23:02:20,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 23:02:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:02:20,290 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 10 states. [2020-07-19 23:02:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:20,438 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-19 23:02:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 23:02:20,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-19 23:02:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:20,440 INFO L225 Difference]: With dead ends: 44 [2020-07-19 23:02:20,440 INFO L226 Difference]: Without dead ends: 40 [2020-07-19 23:02:20,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:02:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-19 23:02:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-19 23:02:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-19 23:02:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-19 23:02:20,450 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2020-07-19 23:02:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:20,450 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-19 23:02:20,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 23:02:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-19 23:02:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-19 23:02:20,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:20,452 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:20,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:20,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-07-19 23:02:20,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:20,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458311173] [2020-07-19 23:02:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-19 23:02:20,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458311173] [2020-07-19 23:02:20,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947630849] [2020-07-19 23:02:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e9fbfde No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:20,868 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e9fbfde issued 2 check-sat command(s) [2020-07-19 23:02:20,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:20,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 23:02:20,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-19 23:02:20,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:20,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-19 23:02:20,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884578615] [2020-07-19 23:02:20,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 23:02:20,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 23:02:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-19 23:02:20,927 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 11 states. [2020-07-19 23:02:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:21,128 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-07-19 23:02:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-19 23:02:21,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-07-19 23:02:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:21,130 INFO L225 Difference]: With dead ends: 47 [2020-07-19 23:02:21,130 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 23:02:21,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:02:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 23:02:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-19 23:02:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-19 23:02:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-19 23:02:21,139 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2020-07-19 23:02:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:21,140 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-19 23:02:21,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 23:02:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-19 23:02:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-19 23:02:21,142 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:21,142 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:21,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:21,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-07-19 23:02:21,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:21,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795299244] [2020-07-19 23:02:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-19 23:02:21,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795299244] [2020-07-19 23:02:21,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754453168] [2020-07-19 23:02:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6efe5529 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 [2020-07-19 23:02:21,544 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6efe5529 issued 2 check-sat command(s) [2020-07-19 23:02:21,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:21,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-19 23:02:21,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-19 23:02:21,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:21,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-07-19 23:02:21,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061364912] [2020-07-19 23:02:21,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:02:21,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:21,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:02:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:02:21,592 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 12 states. [2020-07-19 23:02:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:21,751 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-07-19 23:02:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-19 23:02:21,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-19 23:02:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:21,753 INFO L225 Difference]: With dead ends: 50 [2020-07-19 23:02:21,753 INFO L226 Difference]: Without dead ends: 46 [2020-07-19 23:02:21,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:02:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-19 23:02:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-19 23:02:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 23:02:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-07-19 23:02:21,762 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-07-19 23:02:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:21,763 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-07-19 23:02:21,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:02:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-19 23:02:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-19 23:02:21,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:21,765 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:21,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-19 23:02:21,981 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-07-19 23:02:21,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:21,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513529549] [2020-07-19 23:02:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-19 23:02:22,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513529549] [2020-07-19 23:02:22,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779488638] [2020-07-19 23:02:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dafb58a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:22,305 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dafb58a issued 2 check-sat command(s) [2020-07-19 23:02:22,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:22,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-19 23:02:22,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-19 23:02:22,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:22,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-19 23:02:22,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116605993] [2020-07-19 23:02:22,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 23:02:22,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 23:02:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:02:22,350 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-07-19 23:02:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:22,532 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-07-19 23:02:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 23:02:22,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-07-19 23:02:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:22,535 INFO L225 Difference]: With dead ends: 53 [2020-07-19 23:02:22,535 INFO L226 Difference]: Without dead ends: 49 [2020-07-19 23:02:22,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-19 23:02:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-19 23:02:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-19 23:02:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 23:02:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-19 23:02:22,544 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 55 [2020-07-19 23:02:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:22,544 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-19 23:02:22,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 23:02:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-19 23:02:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-19 23:02:22,546 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:22,546 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:22,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:22,750 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:22,751 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-07-19 23:02:22,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:22,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231325943] [2020-07-19 23:02:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-19 23:02:22,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231325943] [2020-07-19 23:02:22,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393670504] [2020-07-19 23:02:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10da6dca 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 [2020-07-19 23:02:23,059 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10da6dca issued 2 check-sat command(s) [2020-07-19 23:02:23,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:23,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-19 23:02:23,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-19 23:02:23,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:23,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-19 23:02:23,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602577943] [2020-07-19 23:02:23,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-19 23:02:23,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:23,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-19 23:02:23,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-07-19 23:02:23,110 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 14 states. [2020-07-19 23:02:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:23,311 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-07-19 23:02:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:02:23,312 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-07-19 23:02:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:23,313 INFO L225 Difference]: With dead ends: 56 [2020-07-19 23:02:23,313 INFO L226 Difference]: Without dead ends: 52 [2020-07-19 23:02:23,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-07-19 23:02:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-19 23:02:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-19 23:02:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-19 23:02:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-07-19 23:02:23,321 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 62 [2020-07-19 23:02:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:23,322 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-07-19 23:02:23,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-19 23:02:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-07-19 23:02:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-19 23:02:23,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:23,324 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:23,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:23,539 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-07-19 23:02:23,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:23,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361082074] [2020-07-19 23:02:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-19 23:02:23,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361082074] [2020-07-19 23:02:23,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187164021] [2020-07-19 23:02:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a6cf829 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:23,932 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a6cf829 issued 2 check-sat command(s) [2020-07-19 23:02:23,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:23,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-19 23:02:23,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-19 23:02:24,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:24,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-19 23:02:24,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260535381] [2020-07-19 23:02:24,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 23:02:24,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:24,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 23:02:24,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:02:24,005 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 15 states. [2020-07-19 23:02:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:24,222 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-19 23:02:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 23:02:24,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-07-19 23:02:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:24,224 INFO L225 Difference]: With dead ends: 59 [2020-07-19 23:02:24,224 INFO L226 Difference]: Without dead ends: 55 [2020-07-19 23:02:24,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-07-19 23:02:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-19 23:02:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-07-19 23:02:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-19 23:02:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-07-19 23:02:24,232 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2020-07-19 23:02:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:24,233 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-07-19 23:02:24,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 23:02:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-07-19 23:02:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-19 23:02:24,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:24,235 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:24,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-19 23:02:24,451 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-07-19 23:02:24,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:24,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170318530] [2020-07-19 23:02:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-19 23:02:24,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170318530] [2020-07-19 23:02:24,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37178508] [2020-07-19 23:02:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@647078c9 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 [2020-07-19 23:02:24,794 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@647078c9 issued 2 check-sat command(s) [2020-07-19 23:02:24,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:24,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-19 23:02:24,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-19 23:02:24,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:24,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-07-19 23:02:24,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289497386] [2020-07-19 23:02:24,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-19 23:02:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-19 23:02:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-07-19 23:02:24,869 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 16 states. [2020-07-19 23:02:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:25,089 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-07-19 23:02:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-19 23:02:25,090 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-07-19 23:02:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:25,092 INFO L225 Difference]: With dead ends: 62 [2020-07-19 23:02:25,092 INFO L226 Difference]: Without dead ends: 58 [2020-07-19 23:02:25,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-07-19 23:02:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-19 23:02:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-19 23:02:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-19 23:02:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-07-19 23:02:25,112 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 76 [2020-07-19 23:02:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:25,113 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-07-19 23:02:25,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-19 23:02:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-07-19 23:02:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-19 23:02:25,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:25,117 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:25,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:25,332 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-07-19 23:02:25,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:25,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394847054] [2020-07-19 23:02:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-19 23:02:25,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394847054] [2020-07-19 23:02:25,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689574796] [2020-07-19 23:02:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bcccc7c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:25,855 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2bcccc7c issued 2 check-sat command(s) [2020-07-19 23:02:25,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-19 23:02:25,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-19 23:02:25,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:25,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-19 23:02:25,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064027453] [2020-07-19 23:02:25,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-19 23:02:25,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-19 23:02:25,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:02:25,910 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 17 states. [2020-07-19 23:02:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:26,132 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-19 23:02:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-19 23:02:26,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-07-19 23:02:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:26,135 INFO L225 Difference]: With dead ends: 65 [2020-07-19 23:02:26,135 INFO L226 Difference]: Without dead ends: 61 [2020-07-19 23:02:26,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-07-19 23:02:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-19 23:02:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-19 23:02:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-19 23:02:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-19 23:02:26,144 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 83 [2020-07-19 23:02:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:26,145 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-19 23:02:26,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-19 23:02:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-19 23:02:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-19 23:02:26,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:26,147 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:26,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:26,362 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:26,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-07-19 23:02:26,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:26,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308455329] [2020-07-19 23:02:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-19 23:02:26,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308455329] [2020-07-19 23:02:26,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494168064] [2020-07-19 23:02:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fae8390 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 [2020-07-19 23:02:26,969 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1fae8390 issued 2 check-sat command(s) [2020-07-19 23:02:26,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-19 23:02:26,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-19 23:02:27,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:27,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-07-19 23:02:27,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438980957] [2020-07-19 23:02:27,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-19 23:02:27,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:27,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-19 23:02:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-07-19 23:02:27,042 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 18 states. [2020-07-19 23:02:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:27,309 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-07-19 23:02:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-19 23:02:27,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-07-19 23:02:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:27,311 INFO L225 Difference]: With dead ends: 68 [2020-07-19 23:02:27,311 INFO L226 Difference]: Without dead ends: 64 [2020-07-19 23:02:27,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-07-19 23:02:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-19 23:02:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-07-19 23:02:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-19 23:02:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-07-19 23:02:27,318 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 90 [2020-07-19 23:02:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:27,319 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-07-19 23:02:27,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-19 23:02:27,319 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-07-19 23:02:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-07-19 23:02:27,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:27,321 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:27,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-19 23:02:27,534 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-07-19 23:02:27,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:27,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017182360] [2020-07-19 23:02:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-19 23:02:28,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017182360] [2020-07-19 23:02:28,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525344347] [2020-07-19 23:02:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@bc7b29e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:28,074 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@bc7b29e issued 2 check-sat command(s) [2020-07-19 23:02:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:28,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-19 23:02:28,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-19 23:02:28,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:28,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-19 23:02:28,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553603654] [2020-07-19 23:02:28,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-19 23:02:28,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:28,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-19 23:02:28,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:02:28,160 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 19 states. [2020-07-19 23:02:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:28,424 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-07-19 23:02:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-19 23:02:28,425 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-07-19 23:02:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:28,426 INFO L225 Difference]: With dead ends: 71 [2020-07-19 23:02:28,426 INFO L226 Difference]: Without dead ends: 67 [2020-07-19 23:02:28,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-07-19 23:02:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-19 23:02:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-07-19 23:02:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-19 23:02:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-07-19 23:02:28,439 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 97 [2020-07-19 23:02:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:28,439 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-07-19 23:02:28,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-19 23:02:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-07-19 23:02:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-19 23:02:28,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:28,442 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:28,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-19 23:02:28,654 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:28,655 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-07-19 23:02:28,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:28,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526009149] [2020-07-19 23:02:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-19 23:02:29,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526009149] [2020-07-19 23:02:29,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812136791] [2020-07-19 23:02:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f346930 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 [2020-07-19 23:02:29,184 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3f346930 issued 2 check-sat command(s) [2020-07-19 23:02:29,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-19 23:02:29,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-19 23:02:29,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:29,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-07-19 23:02:29,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393136140] [2020-07-19 23:02:29,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-19 23:02:29,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:29,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-19 23:02:29,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:02:29,249 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 20 states. [2020-07-19 23:02:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:29,534 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-07-19 23:02:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-19 23:02:29,535 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-07-19 23:02:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:29,536 INFO L225 Difference]: With dead ends: 74 [2020-07-19 23:02:29,537 INFO L226 Difference]: Without dead ends: 70 [2020-07-19 23:02:29,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-07-19 23:02:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-19 23:02:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-19 23:02:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-19 23:02:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-07-19 23:02:29,553 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 104 [2020-07-19 23:02:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:29,555 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-07-19 23:02:29,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-19 23:02:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-07-19 23:02:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-19 23:02:29,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:29,557 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:29,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-19 23:02:29,773 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-07-19 23:02:29,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:29,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176399427] [2020-07-19 23:02:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-19 23:02:30,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176399427] [2020-07-19 23:02:30,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318957443] [2020-07-19 23:02:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3935136e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:30,413 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3935136e issued 2 check-sat command(s) [2020-07-19 23:02:30,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:30,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-19 23:02:30,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-19 23:02:30,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:30,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-19 23:02:30,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684986308] [2020-07-19 23:02:30,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-19 23:02:30,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:30,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-19 23:02:30,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-07-19 23:02:30,504 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 21 states. [2020-07-19 23:02:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:30,877 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-07-19 23:02:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-19 23:02:30,878 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-07-19 23:02:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:30,879 INFO L225 Difference]: With dead ends: 77 [2020-07-19 23:02:30,879 INFO L226 Difference]: Without dead ends: 73 [2020-07-19 23:02:30,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-07-19 23:02:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-19 23:02:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-19 23:02:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-19 23:02:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-07-19 23:02:30,891 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 111 [2020-07-19 23:02:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:30,892 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-07-19 23:02:30,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-19 23:02:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-07-19 23:02:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-19 23:02:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:30,894 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:31,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:31,095 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:31,096 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-07-19 23:02:31,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:31,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200666200] [2020-07-19 23:02:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-19 23:02:31,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200666200] [2020-07-19 23:02:31,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72132079] [2020-07-19 23:02:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7169bfc3 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 [2020-07-19 23:02:31,711 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7169bfc3 issued 2 check-sat command(s) [2020-07-19 23:02:31,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:31,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-19 23:02:31,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-19 23:02:31,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:31,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-07-19 23:02:31,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245942840] [2020-07-19 23:02:31,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-19 23:02:31,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:31,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-19 23:02:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-07-19 23:02:31,790 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 22 states. [2020-07-19 23:02:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:32,125 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-19 23:02:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-19 23:02:32,126 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-07-19 23:02:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:32,127 INFO L225 Difference]: With dead ends: 80 [2020-07-19 23:02:32,127 INFO L226 Difference]: Without dead ends: 76 [2020-07-19 23:02:32,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2020-07-19 23:02:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-19 23:02:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-19 23:02:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-19 23:02:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-07-19 23:02:32,138 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 118 [2020-07-19 23:02:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:32,139 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-07-19 23:02:32,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-19 23:02:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-07-19 23:02:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-19 23:02:32,142 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:32,142 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:32,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-19 23:02:32,358 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:32,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-07-19 23:02:32,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:32,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642719175] [2020-07-19 23:02:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-19 23:02:33,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642719175] [2020-07-19 23:02:33,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032130169] [2020-07-19 23:02:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7ce0bc87 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:33,095 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7ce0bc87 issued 2 check-sat command(s) [2020-07-19 23:02:33,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:33,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-19 23:02:33,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-19 23:02:33,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:33,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-19 23:02:33,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139409278] [2020-07-19 23:02:33,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-19 23:02:33,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-19 23:02:33,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-07-19 23:02:33,169 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 23 states. [2020-07-19 23:02:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:33,507 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-19 23:02:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-19 23:02:33,512 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 125 [2020-07-19 23:02:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:33,513 INFO L225 Difference]: With dead ends: 83 [2020-07-19 23:02:33,513 INFO L226 Difference]: Without dead ends: 79 [2020-07-19 23:02:33,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-07-19 23:02:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-19 23:02:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-19 23:02:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-19 23:02:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-07-19 23:02:33,525 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 125 [2020-07-19 23:02:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:33,526 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-07-19 23:02:33,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-19 23:02:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-07-19 23:02:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-19 23:02:33,527 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:33,531 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:33,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-19 23:02:33,745 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:33,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-07-19 23:02:33,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:33,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705340041] [2020-07-19 23:02:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-19 23:02:34,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705340041] [2020-07-19 23:02:34,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458749056] [2020-07-19 23:02:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285dd757 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 [2020-07-19 23:02:34,837 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@285dd757 issued 2 check-sat command(s) [2020-07-19 23:02:34,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:34,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-19 23:02:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-19 23:02:34,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:34,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-07-19 23:02:34,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515521595] [2020-07-19 23:02:34,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-19 23:02:34,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:34,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-19 23:02:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-07-19 23:02:34,933 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 24 states. [2020-07-19 23:02:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:35,259 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-07-19 23:02:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-19 23:02:35,259 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-07-19 23:02:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:35,260 INFO L225 Difference]: With dead ends: 86 [2020-07-19 23:02:35,261 INFO L226 Difference]: Without dead ends: 82 [2020-07-19 23:02:35,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-07-19 23:02:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-19 23:02:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-07-19 23:02:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-19 23:02:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-07-19 23:02:35,267 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 132 [2020-07-19 23:02:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:35,268 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-07-19 23:02:35,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-19 23:02:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-07-19 23:02:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-19 23:02:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:35,269 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:35,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:35,482 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-07-19 23:02:35,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:35,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947146649] [2020-07-19 23:02:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-19 23:02:36,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947146649] [2020-07-19 23:02:36,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200277733] [2020-07-19 23:02:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7dd0ec93 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:36,612 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7dd0ec93 issued 2 check-sat command(s) [2020-07-19 23:02:36,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:36,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-19 23:02:36,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-19 23:02:36,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:36,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-19 23:02:36,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645481115] [2020-07-19 23:02:36,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-19 23:02:36,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-19 23:02:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-07-19 23:02:36,717 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 25 states. [2020-07-19 23:02:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:37,082 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-07-19 23:02:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-19 23:02:37,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 139 [2020-07-19 23:02:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:37,084 INFO L225 Difference]: With dead ends: 89 [2020-07-19 23:02:37,084 INFO L226 Difference]: Without dead ends: 85 [2020-07-19 23:02:37,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-07-19 23:02:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-19 23:02:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-07-19 23:02:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-19 23:02:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-07-19 23:02:37,090 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 139 [2020-07-19 23:02:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:37,090 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-07-19 23:02:37,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-19 23:02:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-07-19 23:02:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-19 23:02:37,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:37,092 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:37,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:37,306 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-07-19 23:02:37,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:37,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197001382] [2020-07-19 23:02:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-19 23:02:38,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197001382] [2020-07-19 23:02:38,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960886554] [2020-07-19 23:02:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64c11b14 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 [2020-07-19 23:02:38,390 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64c11b14 issued 2 check-sat command(s) [2020-07-19 23:02:38,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:38,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-19 23:02:38,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-19 23:02:38,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:38,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-07-19 23:02:38,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656612688] [2020-07-19 23:02:38,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-19 23:02:38,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-19 23:02:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-07-19 23:02:38,469 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 26 states. [2020-07-19 23:02:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:38,847 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-07-19 23:02:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-19 23:02:38,848 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-07-19 23:02:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:38,850 INFO L225 Difference]: With dead ends: 92 [2020-07-19 23:02:38,850 INFO L226 Difference]: Without dead ends: 88 [2020-07-19 23:02:38,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2020-07-19 23:02:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-19 23:02:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-19 23:02:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-19 23:02:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-07-19 23:02:38,857 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 146 [2020-07-19 23:02:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:38,858 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-07-19 23:02:38,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-19 23:02:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-07-19 23:02:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-19 23:02:38,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:38,860 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:39,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:39,074 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-07-19 23:02:39,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:39,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231058778] [2020-07-19 23:02:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-19 23:02:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231058778] [2020-07-19 23:02:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662041502] [2020-07-19 23:02:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ba6a5a0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:40,049 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ba6a5a0 issued 2 check-sat command(s) [2020-07-19 23:02:40,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:40,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-19 23:02:40,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-19 23:02:40,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:40,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-19 23:02:40,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133414142] [2020-07-19 23:02:40,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-19 23:02:40,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-19 23:02:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-07-19 23:02:40,134 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 27 states. [2020-07-19 23:02:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:40,560 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-07-19 23:02:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-19 23:02:40,563 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-07-19 23:02:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:40,564 INFO L225 Difference]: With dead ends: 95 [2020-07-19 23:02:40,564 INFO L226 Difference]: Without dead ends: 91 [2020-07-19 23:02:40,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2020-07-19 23:02:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-19 23:02:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-07-19 23:02:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-19 23:02:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-07-19 23:02:40,572 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 153 [2020-07-19 23:02:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:40,573 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-07-19 23:02:40,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-19 23:02:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-07-19 23:02:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-19 23:02:40,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:40,577 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-07-19 23:02:40,793 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-07-19 23:02:40,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:40,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101832129] [2020-07-19 23:02:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-19 23:02:41,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101832129] [2020-07-19 23:02:41,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304202815] [2020-07-19 23:02:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236ed093 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 [2020-07-19 23:02:41,884 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236ed093 issued 2 check-sat command(s) [2020-07-19 23:02:41,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-19 23:02:41,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-19 23:02:42,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:42,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-07-19 23:02:42,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129118299] [2020-07-19 23:02:42,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-19 23:02:42,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-19 23:02:42,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-07-19 23:02:42,008 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 28 states. [2020-07-19 23:02:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:42,445 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-07-19 23:02:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-19 23:02:42,445 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-07-19 23:02:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:42,447 INFO L225 Difference]: With dead ends: 98 [2020-07-19 23:02:42,447 INFO L226 Difference]: Without dead ends: 94 [2020-07-19 23:02:42,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2020-07-19 23:02:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-19 23:02:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-07-19 23:02:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-19 23:02:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-07-19 23:02:42,453 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 160 [2020-07-19 23:02:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:42,453 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-07-19 23:02:42,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-19 23:02:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-07-19 23:02:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-19 23:02:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:42,456 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:42,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-19 23:02:42,670 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-07-19 23:02:42,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:42,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922110932] [2020-07-19 23:02:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-19 23:02:43,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922110932] [2020-07-19 23:02:43,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232585778] [2020-07-19 23:02:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20640f6a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:43,917 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20640f6a issued 2 check-sat command(s) [2020-07-19 23:02:43,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:43,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-19 23:02:43,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-19 23:02:44,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:44,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-19 23:02:44,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502104715] [2020-07-19 23:02:44,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-19 23:02:44,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:44,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-19 23:02:44,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-07-19 23:02:44,015 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 29 states. [2020-07-19 23:02:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:44,483 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-07-19 23:02:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-19 23:02:44,484 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 167 [2020-07-19 23:02:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:44,485 INFO L225 Difference]: With dead ends: 101 [2020-07-19 23:02:44,485 INFO L226 Difference]: Without dead ends: 97 [2020-07-19 23:02:44,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2020-07-19 23:02:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-19 23:02:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-19 23:02:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-19 23:02:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-07-19 23:02:44,492 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 167 [2020-07-19 23:02:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:44,492 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-07-19 23:02:44,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-19 23:02:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-07-19 23:02:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-07-19 23:02:44,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:44,494 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:44,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:44,702 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:44,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-07-19 23:02:44,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:44,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478551179] [2020-07-19 23:02:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-19 23:02:45,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478551179] [2020-07-19 23:02:45,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741107957] [2020-07-19 23:02:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1931af82 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 [2020-07-19 23:02:45,930 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1931af82 issued 2 check-sat command(s) [2020-07-19 23:02:45,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:45,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-19 23:02:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-19 23:02:46,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:46,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-07-19 23:02:46,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837010391] [2020-07-19 23:02:46,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-19 23:02:46,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-19 23:02:46,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-07-19 23:02:46,023 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 30 states. [2020-07-19 23:02:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:46,502 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-07-19 23:02:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-19 23:02:46,506 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2020-07-19 23:02:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:46,507 INFO L225 Difference]: With dead ends: 104 [2020-07-19 23:02:46,507 INFO L226 Difference]: Without dead ends: 100 [2020-07-19 23:02:46,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2020-07-19 23:02:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-19 23:02:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-07-19 23:02:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-19 23:02:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-07-19 23:02:46,513 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 174 [2020-07-19 23:02:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:46,514 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-07-19 23:02:46,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-19 23:02:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-07-19 23:02:46,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-19 23:02:46,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:46,516 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:46,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-07-19 23:02:46,724 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:46,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-07-19 23:02:46,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:46,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243368265] [2020-07-19 23:02:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-19 23:02:47,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243368265] [2020-07-19 23:02:47,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762300886] [2020-07-19 23:02:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6addae0b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:47,985 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6addae0b issued 2 check-sat command(s) [2020-07-19 23:02:47,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:47,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-19 23:02:47,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-19 23:02:48,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:48,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-19 23:02:48,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996240829] [2020-07-19 23:02:48,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-19 23:02:48,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:48,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-19 23:02:48,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-07-19 23:02:48,086 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 31 states. [2020-07-19 23:02:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:48,556 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-07-19 23:02:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-19 23:02:48,556 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 181 [2020-07-19 23:02:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:48,557 INFO L225 Difference]: With dead ends: 107 [2020-07-19 23:02:48,558 INFO L226 Difference]: Without dead ends: 103 [2020-07-19 23:02:48,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2020-07-19 23:02:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-19 23:02:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-07-19 23:02:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-19 23:02:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-07-19 23:02:48,564 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 181 [2020-07-19 23:02:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:48,564 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-07-19 23:02:48,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-19 23:02:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-07-19 23:02:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-19 23:02:48,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:48,566 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:48,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:48,779 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-07-19 23:02:48,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:48,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394502071] [2020-07-19 23:02:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-19 23:02:50,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394502071] [2020-07-19 23:02:50,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596092316] [2020-07-19 23:02:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dfcc656 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 [2020-07-19 23:02:50,257 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5dfcc656 issued 2 check-sat command(s) [2020-07-19 23:02:50,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:50,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-19 23:02:50,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-19 23:02:50,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-07-19 23:02:50,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921088836] [2020-07-19 23:02:50,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-19 23:02:50,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-19 23:02:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=579, Unknown=0, NotChecked=0, Total=992 [2020-07-19 23:02:50,351 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 32 states. [2020-07-19 23:02:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:50,879 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-07-19 23:02:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-19 23:02:50,879 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 188 [2020-07-19 23:02:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:50,881 INFO L225 Difference]: With dead ends: 110 [2020-07-19 23:02:50,882 INFO L226 Difference]: Without dead ends: 106 [2020-07-19 23:02:50,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2020-07-19 23:02:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-19 23:02:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-19 23:02:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-19 23:02:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-07-19 23:02:50,889 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 188 [2020-07-19 23:02:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:50,889 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-07-19 23:02:50,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-19 23:02:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-07-19 23:02:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-19 23:02:50,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:50,891 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:51,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-07-19 23:02:51,104 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:51,105 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-07-19 23:02:51,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:51,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082309529] [2020-07-19 23:02:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-19 23:02:52,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082309529] [2020-07-19 23:02:52,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028736386] [2020-07-19 23:02:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f5a2114 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:52,673 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f5a2114 issued 2 check-sat command(s) [2020-07-19 23:02:52,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:52,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-19 23:02:52,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-19 23:02:52,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:52,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-19 23:02:52,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108001742] [2020-07-19 23:02:52,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-19 23:02:52,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:52,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-19 23:02:52,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=614, Unknown=0, NotChecked=0, Total=1056 [2020-07-19 23:02:52,793 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 33 states. [2020-07-19 23:02:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:53,357 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-07-19 23:02:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-19 23:02:53,357 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 195 [2020-07-19 23:02:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:53,359 INFO L225 Difference]: With dead ends: 113 [2020-07-19 23:02:53,360 INFO L226 Difference]: Without dead ends: 109 [2020-07-19 23:02:53,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2020-07-19 23:02:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-19 23:02:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-07-19 23:02:53,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-19 23:02:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-07-19 23:02:53,367 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 195 [2020-07-19 23:02:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:53,368 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-07-19 23:02:53,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-19 23:02:53,368 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-07-19 23:02:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-19 23:02:53,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:53,369 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:53,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-19 23:02:53,572 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-07-19 23:02:53,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:53,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738503340] [2020-07-19 23:02:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-19 23:02:55,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738503340] [2020-07-19 23:02:55,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983689315] [2020-07-19 23:02:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ae4ddf4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:55,112 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ae4ddf4 issued 2 check-sat command(s) [2020-07-19 23:02:55,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:55,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-19 23:02:55,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-19 23:02:55,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:55,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-07-19 23:02:55,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799000004] [2020-07-19 23:02:55,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-19 23:02:55,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:55,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-19 23:02:55,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=650, Unknown=0, NotChecked=0, Total=1122 [2020-07-19 23:02:55,292 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 34 states. [2020-07-19 23:02:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:55,876 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-07-19 23:02:55,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-19 23:02:55,877 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 202 [2020-07-19 23:02:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:55,879 INFO L225 Difference]: With dead ends: 116 [2020-07-19 23:02:55,879 INFO L226 Difference]: Without dead ends: 112 [2020-07-19 23:02:55,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2020-07-19 23:02:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-19 23:02:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-07-19 23:02:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-19 23:02:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-19 23:02:55,887 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 202 [2020-07-19 23:02:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:55,887 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-19 23:02:55,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-19 23:02:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-19 23:02:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-19 23:02:55,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:55,889 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:56,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-19 23:02:56,103 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-07-19 23:02:56,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:56,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049119438] [2020-07-19 23:02:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-19 23:02:57,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049119438] [2020-07-19 23:02:57,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912267285] [2020-07-19 23:02:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a2d9967 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:57,815 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a2d9967 issued 2 check-sat command(s) [2020-07-19 23:02:57,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:02:57,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-19 23:02:57,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:02:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-19 23:02:57,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:02:57,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-19 23:02:57,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976117777] [2020-07-19 23:02:57,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-19 23:02:57,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:02:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-19 23:02:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=687, Unknown=0, NotChecked=0, Total=1190 [2020-07-19 23:02:57,977 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 35 states. [2020-07-19 23:02:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:02:58,567 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-07-19 23:02:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-19 23:02:58,568 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 209 [2020-07-19 23:02:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:02:58,570 INFO L225 Difference]: With dead ends: 119 [2020-07-19 23:02:58,571 INFO L226 Difference]: Without dead ends: 115 [2020-07-19 23:02:58,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2020-07-19 23:02:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-19 23:02:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-19 23:02:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-19 23:02:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-07-19 23:02:58,577 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 209 [2020-07-19 23:02:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:02:58,577 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-07-19 23:02:58,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-19 23:02:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-07-19 23:02:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-07-19 23:02:58,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:02:58,579 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:02:58,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:02:58,793 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:02:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:02:58,793 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-07-19 23:02:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:02:58,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482153554] [2020-07-19 23:02:58,794 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:02:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:02:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-19 23:03:00,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482153554] [2020-07-19 23:03:00,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94531395] [2020-07-19 23:03:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3fb4ae8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:00,698 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3fb4ae8 issued 2 check-sat command(s) [2020-07-19 23:03:00,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:00,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-19 23:03:00,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-19 23:03:00,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:00,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-07-19 23:03:00,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350774099] [2020-07-19 23:03:00,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-19 23:03:00,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:00,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-19 23:03:00,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=725, Unknown=0, NotChecked=0, Total=1260 [2020-07-19 23:03:00,830 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 36 states. [2020-07-19 23:03:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:01,444 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-19 23:03:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-19 23:03:01,445 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 216 [2020-07-19 23:03:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:01,447 INFO L225 Difference]: With dead ends: 122 [2020-07-19 23:03:01,447 INFO L226 Difference]: Without dead ends: 118 [2020-07-19 23:03:01,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2020-07-19 23:03:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-19 23:03:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-07-19 23:03:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-19 23:03:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-07-19 23:03:01,454 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 216 [2020-07-19 23:03:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:01,455 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-07-19 23:03:01,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-19 23:03:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-07-19 23:03:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-19 23:03:01,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:01,456 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:01,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-07-19 23:03:01,671 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:01,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:01,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-07-19 23:03:01,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:01,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144061140] [2020-07-19 23:03:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-19 23:03:03,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144061140] [2020-07-19 23:03:03,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454695945] [2020-07-19 23:03:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2fb861b4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:03,586 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2fb861b4 issued 2 check-sat command(s) [2020-07-19 23:03:03,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:03,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-19 23:03:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-19 23:03:03,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:03,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-19 23:03:03,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119163402] [2020-07-19 23:03:03,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-19 23:03:03,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-19 23:03:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=764, Unknown=0, NotChecked=0, Total=1332 [2020-07-19 23:03:03,730 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 37 states. [2020-07-19 23:03:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:04,389 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-07-19 23:03:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-19 23:03:04,389 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 223 [2020-07-19 23:03:04,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:04,391 INFO L225 Difference]: With dead ends: 125 [2020-07-19 23:03:04,392 INFO L226 Difference]: Without dead ends: 121 [2020-07-19 23:03:04,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2020-07-19 23:03:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-19 23:03:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-07-19 23:03:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-19 23:03:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-07-19 23:03:04,399 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 223 [2020-07-19 23:03:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:04,400 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-07-19 23:03:04,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-19 23:03:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-07-19 23:03:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-07-19 23:03:04,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:04,401 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:04,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:04,614 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:04,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-07-19 23:03:04,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:04,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705866402] [2020-07-19 23:03:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-19 23:03:06,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705866402] [2020-07-19 23:03:06,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910557673] [2020-07-19 23:03:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2746a5a5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:06,715 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2746a5a5 issued 2 check-sat command(s) [2020-07-19 23:03:06,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:06,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-19 23:03:06,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-19 23:03:06,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:06,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2020-07-19 23:03:06,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6828558] [2020-07-19 23:03:06,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-19 23:03:06,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:06,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-19 23:03:06,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=804, Unknown=0, NotChecked=0, Total=1406 [2020-07-19 23:03:06,869 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 38 states. [2020-07-19 23:03:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:07,594 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-07-19 23:03:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-19 23:03:07,594 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 230 [2020-07-19 23:03:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:07,596 INFO L225 Difference]: With dead ends: 128 [2020-07-19 23:03:07,597 INFO L226 Difference]: Without dead ends: 124 [2020-07-19 23:03:07,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2020-07-19 23:03:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-19 23:03:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-19 23:03:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-19 23:03:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-07-19 23:03:07,603 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 230 [2020-07-19 23:03:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:07,603 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-07-19 23:03:07,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-19 23:03:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-07-19 23:03:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-19 23:03:07,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:07,605 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:07,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-07-19 23:03:07,819 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:07,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-07-19 23:03:07,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:07,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073525705] [2020-07-19 23:03:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-19 23:03:09,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073525705] [2020-07-19 23:03:09,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314577031] [2020-07-19 23:03:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41b59654 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:09,945 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41b59654 issued 2 check-sat command(s) [2020-07-19 23:03:09,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:09,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-19 23:03:09,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-19 23:03:10,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:10,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-19 23:03:10,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121573344] [2020-07-19 23:03:10,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-19 23:03:10,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-19 23:03:10,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=845, Unknown=0, NotChecked=0, Total=1482 [2020-07-19 23:03:10,083 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 39 states. [2020-07-19 23:03:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:10,798 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-07-19 23:03:10,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-19 23:03:10,799 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 237 [2020-07-19 23:03:10,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:10,800 INFO L225 Difference]: With dead ends: 131 [2020-07-19 23:03:10,801 INFO L226 Difference]: Without dead ends: 127 [2020-07-19 23:03:10,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2020-07-19 23:03:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-19 23:03:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-07-19 23:03:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-19 23:03:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-07-19 23:03:10,808 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 237 [2020-07-19 23:03:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:10,808 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-07-19 23:03:10,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-19 23:03:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-07-19 23:03:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-19 23:03:10,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:10,810 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:11,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-19 23:03:11,011 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:11,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-07-19 23:03:11,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:11,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15243415] [2020-07-19 23:03:11,013 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-19 23:03:13,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15243415] [2020-07-19 23:03:13,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009217882] [2020-07-19 23:03:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@167ecde5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:13,504 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@167ecde5 issued 2 check-sat command(s) [2020-07-19 23:03:13,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:13,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-19 23:03:13,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-19 23:03:13,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:13,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2020-07-19 23:03:13,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760927230] [2020-07-19 23:03:13,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-19 23:03:13,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:13,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-19 23:03:13,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=887, Unknown=0, NotChecked=0, Total=1560 [2020-07-19 23:03:13,661 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 40 states. [2020-07-19 23:03:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:14,568 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-07-19 23:03:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-19 23:03:14,568 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-07-19 23:03:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:14,571 INFO L225 Difference]: With dead ends: 134 [2020-07-19 23:03:14,571 INFO L226 Difference]: Without dead ends: 130 [2020-07-19 23:03:14,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2020-07-19 23:03:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-19 23:03:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-19 23:03:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-19 23:03:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-07-19 23:03:14,585 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 244 [2020-07-19 23:03:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:14,586 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-07-19 23:03:14,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-19 23:03:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-07-19 23:03:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-19 23:03:14,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:14,589 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:14,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-19 23:03:14,804 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:14,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-07-19 23:03:14,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:14,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560978440] [2020-07-19 23:03:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-19 23:03:17,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560978440] [2020-07-19 23:03:17,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226608370] [2020-07-19 23:03:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@147a026d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:17,302 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@147a026d issued 2 check-sat command(s) [2020-07-19 23:03:17,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:17,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 72 conjunts are in the unsatisfiable core [2020-07-19 23:03:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-19 23:03:17,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:17,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-19 23:03:17,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274402025] [2020-07-19 23:03:17,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-19 23:03:17,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-19 23:03:17,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=930, Unknown=0, NotChecked=0, Total=1640 [2020-07-19 23:03:17,464 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 41 states. [2020-07-19 23:03:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:18,240 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-07-19 23:03:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-19 23:03:18,241 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 251 [2020-07-19 23:03:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:18,242 INFO L225 Difference]: With dead ends: 137 [2020-07-19 23:03:18,242 INFO L226 Difference]: Without dead ends: 133 [2020-07-19 23:03:18,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2020-07-19 23:03:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-19 23:03:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-19 23:03:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-19 23:03:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2020-07-19 23:03:18,250 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 251 [2020-07-19 23:03:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:18,250 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2020-07-19 23:03:18,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-19 23:03:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2020-07-19 23:03:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-19 23:03:18,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:18,252 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:18,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-19 23:03:18,466 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:18,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-07-19 23:03:18,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:18,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272381895] [2020-07-19 23:03:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-19 23:03:21,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272381895] [2020-07-19 23:03:21,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002757130] [2020-07-19 23:03:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a284a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:21,109 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a284a issued 2 check-sat command(s) [2020-07-19 23:03:21,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:21,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-19 23:03:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-19 23:03:21,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:21,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2020-07-19 23:03:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762187539] [2020-07-19 23:03:21,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-19 23:03:21,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-19 23:03:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=974, Unknown=0, NotChecked=0, Total=1722 [2020-07-19 23:03:21,255 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 42 states. [2020-07-19 23:03:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:22,056 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-07-19 23:03:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-19 23:03:22,057 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 258 [2020-07-19 23:03:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:22,059 INFO L225 Difference]: With dead ends: 140 [2020-07-19 23:03:22,059 INFO L226 Difference]: Without dead ends: 136 [2020-07-19 23:03:22,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2020-07-19 23:03:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-19 23:03:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-07-19 23:03:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-19 23:03:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2020-07-19 23:03:22,067 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 258 [2020-07-19 23:03:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:22,067 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2020-07-19 23:03:22,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-19 23:03:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2020-07-19 23:03:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-19 23:03:22,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:22,069 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:22,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-19 23:03:22,284 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-07-19 23:03:22,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:22,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459972174] [2020-07-19 23:03:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-19 23:03:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459972174] [2020-07-19 23:03:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278076402] [2020-07-19 23:03:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56532843 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:25,336 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56532843 issued 2 check-sat command(s) [2020-07-19 23:03:25,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:25,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-19 23:03:25,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-19 23:03:25,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:25,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-19 23:03:25,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617768198] [2020-07-19 23:03:25,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-19 23:03:25,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:25,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-19 23:03:25,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2020-07-19 23:03:25,489 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 43 states. [2020-07-19 23:03:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:26,403 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-19 23:03:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-19 23:03:26,404 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 265 [2020-07-19 23:03:26,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:26,406 INFO L225 Difference]: With dead ends: 143 [2020-07-19 23:03:26,406 INFO L226 Difference]: Without dead ends: 139 [2020-07-19 23:03:26,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2020-07-19 23:03:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-19 23:03:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-07-19 23:03:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-07-19 23:03:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-07-19 23:03:26,412 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 265 [2020-07-19 23:03:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:26,413 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-07-19 23:03:26,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-19 23:03:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-07-19 23:03:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-19 23:03:26,414 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:26,415 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:26,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-19 23:03:26,629 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash -742628704, now seen corresponding path program 37 times [2020-07-19 23:03:26,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:26,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588080929] [2020-07-19 23:03:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-19 23:03:29,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588080929] [2020-07-19 23:03:29,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942410676] [2020-07-19 23:03:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73bc95a3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:29,634 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73bc95a3 issued 2 check-sat command(s) [2020-07-19 23:03:29,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:29,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-19 23:03:29,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-19 23:03:29,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:29,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2020-07-19 23:03:29,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21645909] [2020-07-19 23:03:29,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-19 23:03:29,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:29,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-19 23:03:29,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=1065, Unknown=0, NotChecked=0, Total=1892 [2020-07-19 23:03:29,867 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 44 states. [2020-07-19 23:03:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:30,772 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-07-19 23:03:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-19 23:03:30,773 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 272 [2020-07-19 23:03:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:30,775 INFO L225 Difference]: With dead ends: 146 [2020-07-19 23:03:30,776 INFO L226 Difference]: Without dead ends: 142 [2020-07-19 23:03:30,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2020-07-19 23:03:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-19 23:03:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-19 23:03:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-19 23:03:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2020-07-19 23:03:30,786 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 272 [2020-07-19 23:03:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:30,787 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2020-07-19 23:03:30,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-19 23:03:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2020-07-19 23:03:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-19 23:03:30,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:30,791 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:31,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-19 23:03:31,007 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash 571018495, now seen corresponding path program 38 times [2020-07-19 23:03:31,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906745259] [2020-07-19 23:03:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-19 23:03:34,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906745259] [2020-07-19 23:03:34,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025024895] [2020-07-19 23:03:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@258eda57 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:34,703 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@258eda57 issued 2 check-sat command(s) [2020-07-19 23:03:34,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:34,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 80 conjunts are in the unsatisfiable core [2020-07-19 23:03:34,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-19 23:03:34,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:34,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-19 23:03:34,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605218625] [2020-07-19 23:03:34,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-19 23:03:34,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-19 23:03:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=1112, Unknown=0, NotChecked=0, Total=1980 [2020-07-19 23:03:34,933 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 45 states. [2020-07-19 23:03:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:35,831 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-07-19 23:03:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-19 23:03:35,831 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 279 [2020-07-19 23:03:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:35,833 INFO L225 Difference]: With dead ends: 149 [2020-07-19 23:03:35,834 INFO L226 Difference]: Without dead ends: 145 [2020-07-19 23:03:35,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2020-07-19 23:03:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-19 23:03:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-07-19 23:03:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-19 23:03:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-07-19 23:03:35,841 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 279 [2020-07-19 23:03:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:35,841 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-07-19 23:03:35,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-19 23:03:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-07-19 23:03:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-19 23:03:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:35,843 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:36,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-19 23:03:36,059 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash -708506358, now seen corresponding path program 39 times [2020-07-19 23:03:36,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:36,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252115276] [2020-07-19 23:03:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-19 23:03:40,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252115276] [2020-07-19 23:03:40,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916476582] [2020-07-19 23:03:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68a247fe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:40,386 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68a247fe issued 2 check-sat command(s) [2020-07-19 23:03:40,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:40,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-19 23:03:40,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-19 23:03:40,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:40,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2020-07-19 23:03:40,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58680604] [2020-07-19 23:03:40,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-19 23:03:40,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:40,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-19 23:03:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=1160, Unknown=0, NotChecked=0, Total=2070 [2020-07-19 23:03:40,541 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 46 states. [2020-07-19 23:03:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:41,539 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-07-19 23:03:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-19 23:03:41,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 286 [2020-07-19 23:03:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:41,543 INFO L225 Difference]: With dead ends: 152 [2020-07-19 23:03:41,543 INFO L226 Difference]: Without dead ends: 148 [2020-07-19 23:03:41,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2020-07-19 23:03:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-19 23:03:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-19 23:03:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-19 23:03:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-07-19 23:03:41,550 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 286 [2020-07-19 23:03:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:41,551 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-07-19 23:03:41,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-19 23:03:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-07-19 23:03:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-19 23:03:41,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:41,554 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:41,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:41,768 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:41,769 INFO L82 PathProgramCache]: Analyzing trace with hash 287341333, now seen corresponding path program 40 times [2020-07-19 23:03:41,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:41,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773060655] [2020-07-19 23:03:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-19 23:03:45,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773060655] [2020-07-19 23:03:45,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623215927] [2020-07-19 23:03:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@728d1723 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:45,382 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@728d1723 issued 2 check-sat command(s) [2020-07-19 23:03:45,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:45,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 84 conjunts are in the unsatisfiable core [2020-07-19 23:03:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-19 23:03:45,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:45,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-19 23:03:45,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385368415] [2020-07-19 23:03:45,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-19 23:03:45,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-19 23:03:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=1209, Unknown=0, NotChecked=0, Total=2162 [2020-07-19 23:03:45,543 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 47 states. [2020-07-19 23:03:46,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:46,554 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-07-19 23:03:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-19 23:03:46,555 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 293 [2020-07-19 23:03:46,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:46,558 INFO L225 Difference]: With dead ends: 155 [2020-07-19 23:03:46,559 INFO L226 Difference]: Without dead ends: 151 [2020-07-19 23:03:46,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2020-07-19 23:03:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-19 23:03:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-19 23:03:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-19 23:03:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2020-07-19 23:03:46,565 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 293 [2020-07-19 23:03:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:46,566 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2020-07-19 23:03:46,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-19 23:03:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2020-07-19 23:03:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-19 23:03:46,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:46,568 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:46,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:46,782 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:46,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:46,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2006277748, now seen corresponding path program 41 times [2020-07-19 23:03:46,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:46,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525680256] [2020-07-19 23:03:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-19 23:03:50,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525680256] [2020-07-19 23:03:50,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270646184] [2020-07-19 23:03:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e730d0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:51,072 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e730d0 issued 2 check-sat command(s) [2020-07-19 23:03:51,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:51,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-19 23:03:51,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-19 23:03:51,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:51,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2020-07-19 23:03:51,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896044834] [2020-07-19 23:03:51,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-19 23:03:51,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:51,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-19 23:03:51,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=1259, Unknown=0, NotChecked=0, Total=2256 [2020-07-19 23:03:51,238 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 48 states. [2020-07-19 23:03:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:52,215 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2020-07-19 23:03:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-19 23:03:52,215 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 300 [2020-07-19 23:03:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:52,217 INFO L225 Difference]: With dead ends: 158 [2020-07-19 23:03:52,217 INFO L226 Difference]: Without dead ends: 154 [2020-07-19 23:03:52,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2020-07-19 23:03:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-19 23:03:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-07-19 23:03:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-19 23:03:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2020-07-19 23:03:52,228 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 300 [2020-07-19 23:03:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:52,228 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2020-07-19 23:03:52,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-19 23:03:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2020-07-19 23:03:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-19 23:03:52,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:52,231 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:52,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-07-19 23:03:52,445 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:52,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash 707039787, now seen corresponding path program 42 times [2020-07-19 23:03:52,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:52,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799480932] [2020-07-19 23:03:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-19 23:03:56,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799480932] [2020-07-19 23:03:56,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639962055] [2020-07-19 23:03:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2040848a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:56,500 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2040848a issued 2 check-sat command(s) [2020-07-19 23:03:56,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:03:56,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 88 conjunts are in the unsatisfiable core [2020-07-19 23:03:56,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:03:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-19 23:03:56,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:03:56,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-19 23:03:56,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868673708] [2020-07-19 23:03:56,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-19 23:03:56,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:03:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-19 23:03:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1042, Invalid=1310, Unknown=0, NotChecked=0, Total=2352 [2020-07-19 23:03:56,718 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 49 states. [2020-07-19 23:03:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:03:57,826 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-07-19 23:03:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-19 23:03:57,827 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 307 [2020-07-19 23:03:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:03:57,829 INFO L225 Difference]: With dead ends: 161 [2020-07-19 23:03:57,829 INFO L226 Difference]: Without dead ends: 157 [2020-07-19 23:03:57,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2020-07-19 23:03:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-19 23:03:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-07-19 23:03:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-19 23:03:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2020-07-19 23:03:57,836 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 307 [2020-07-19 23:03:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:03:57,837 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2020-07-19 23:03:57,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-19 23:03:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2020-07-19 23:03:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-19 23:03:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:03:57,840 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:03:58,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:03:58,041 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:03:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:03:58,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1671645474, now seen corresponding path program 43 times [2020-07-19 23:03:58,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:03:58,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155796506] [2020-07-19 23:03:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:03:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:03:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-19 23:04:02,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155796506] [2020-07-19 23:04:02,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093313422] [2020-07-19 23:04:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1de63e31 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:02,486 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1de63e31 issued 2 check-sat command(s) [2020-07-19 23:04:02,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:02,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-19 23:04:02,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-19 23:04:02,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:02,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 50 [2020-07-19 23:04:02,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048079574] [2020-07-19 23:04:02,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-19 23:04:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-19 23:04:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=1362, Unknown=0, NotChecked=0, Total=2450 [2020-07-19 23:04:02,707 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 50 states. [2020-07-19 23:04:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:03,837 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-07-19 23:04:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-19 23:04:03,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 314 [2020-07-19 23:04:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:03,840 INFO L225 Difference]: With dead ends: 164 [2020-07-19 23:04:03,840 INFO L226 Difference]: Without dead ends: 160 [2020-07-19 23:04:03,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2020-07-19 23:04:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-19 23:04:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-19 23:04:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-19 23:04:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2020-07-19 23:04:03,848 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 314 [2020-07-19 23:04:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:03,848 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2020-07-19 23:04:03,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-19 23:04:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2020-07-19 23:04:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-19 23:04:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:03,851 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:04,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:04,066 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash -797576639, now seen corresponding path program 44 times [2020-07-19 23:04:04,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:04,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047986961] [2020-07-19 23:04:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-19 23:04:08,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047986961] [2020-07-19 23:04:08,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952760652] [2020-07-19 23:04:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@72e803f6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:08,671 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@72e803f6 issued 2 check-sat command(s) [2020-07-19 23:04:08,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:08,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 92 conjunts are in the unsatisfiable core [2020-07-19 23:04:08,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-19 23:04:08,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:08,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-19 23:04:08,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882087247] [2020-07-19 23:04:08,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-19 23:04:08,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:08,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-19 23:04:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2020-07-19 23:04:08,937 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 51 states. [2020-07-19 23:04:10,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:10,118 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-07-19 23:04:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-19 23:04:10,119 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 321 [2020-07-19 23:04:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:10,121 INFO L225 Difference]: With dead ends: 167 [2020-07-19 23:04:10,121 INFO L226 Difference]: Without dead ends: 163 [2020-07-19 23:04:10,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2020-07-19 23:04:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-19 23:04:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-07-19 23:04:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-19 23:04:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-07-19 23:04:10,129 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 321 [2020-07-19 23:04:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:10,129 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-07-19 23:04:10,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-19 23:04:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-07-19 23:04:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-19 23:04:10,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:10,132 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:10,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-07-19 23:04:10,346 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash 44725832, now seen corresponding path program 45 times [2020-07-19 23:04:10,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:10,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860143156] [2020-07-19 23:04:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-19 23:04:15,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860143156] [2020-07-19 23:04:15,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510699367] [2020-07-19 23:04:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32d1f46f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:15,212 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@32d1f46f issued 2 check-sat command(s) [2020-07-19 23:04:15,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:15,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-19 23:04:15,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-19 23:04:15,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:15,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 52 [2020-07-19 23:04:15,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617150196] [2020-07-19 23:04:15,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-19 23:04:15,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-19 23:04:15,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2020-07-19 23:04:15,450 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 52 states. [2020-07-19 23:04:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:16,686 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-19 23:04:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-19 23:04:16,687 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 328 [2020-07-19 23:04:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:16,689 INFO L225 Difference]: With dead ends: 170 [2020-07-19 23:04:16,690 INFO L226 Difference]: Without dead ends: 166 [2020-07-19 23:04:16,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2020-07-19 23:04:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-19 23:04:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-19 23:04:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-19 23:04:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2020-07-19 23:04:16,698 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 328 [2020-07-19 23:04:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:16,698 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2020-07-19 23:04:16,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-19 23:04:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2020-07-19 23:04:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-19 23:04:16,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:16,701 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:16,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-19 23:04:16,917 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:16,918 INFO L82 PathProgramCache]: Analyzing trace with hash 454376279, now seen corresponding path program 46 times [2020-07-19 23:04:16,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:16,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575999903] [2020-07-19 23:04:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-19 23:04:22,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575999903] [2020-07-19 23:04:22,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791414432] [2020-07-19 23:04:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e569dc6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:22,202 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e569dc6 issued 2 check-sat command(s) [2020-07-19 23:04:22,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:22,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-19 23:04:22,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-19 23:04:22,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:22,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-19 23:04:22,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842177394] [2020-07-19 23:04:22,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-19 23:04:22,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:22,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-19 23:04:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=1524, Unknown=0, NotChecked=0, Total=2756 [2020-07-19 23:04:22,416 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand 53 states. [2020-07-19 23:04:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:23,741 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-07-19 23:04:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-19 23:04:23,742 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 335 [2020-07-19 23:04:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:23,743 INFO L225 Difference]: With dead ends: 173 [2020-07-19 23:04:23,743 INFO L226 Difference]: Without dead ends: 169 [2020-07-19 23:04:23,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2020-07-19 23:04:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-19 23:04:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-19 23:04:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-19 23:04:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2020-07-19 23:04:23,752 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 335 [2020-07-19 23:04:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:23,752 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2020-07-19 23:04:23,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-19 23:04:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2020-07-19 23:04:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-19 23:04:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:23,755 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:23,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-19 23:04:23,969 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1718484146, now seen corresponding path program 47 times [2020-07-19 23:04:23,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:23,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836227187] [2020-07-19 23:04:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-19 23:04:29,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836227187] [2020-07-19 23:04:29,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332620404] [2020-07-19 23:04:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16117c49 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:29,467 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@16117c49 issued 2 check-sat command(s) [2020-07-19 23:04:29,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:29,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-19 23:04:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-19 23:04:29,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:29,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 54 [2020-07-19 23:04:29,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49396014] [2020-07-19 23:04:29,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-19 23:04:29,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-19 23:04:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=1580, Unknown=0, NotChecked=0, Total=2862 [2020-07-19 23:04:29,818 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand 54 states. [2020-07-19 23:04:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:31,197 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-07-19 23:04:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-19 23:04:31,198 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 342 [2020-07-19 23:04:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:31,200 INFO L225 Difference]: With dead ends: 176 [2020-07-19 23:04:31,200 INFO L226 Difference]: Without dead ends: 172 [2020-07-19 23:04:31,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2020-07-19 23:04:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-19 23:04:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-07-19 23:04:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-19 23:04:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-07-19 23:04:31,209 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 342 [2020-07-19 23:04:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:31,209 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-07-19 23:04:31,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-19 23:04:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-07-19 23:04:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-19 23:04:31,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:31,212 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:31,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:31,415 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash 849546605, now seen corresponding path program 48 times [2020-07-19 23:04:31,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:31,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903728798] [2020-07-19 23:04:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-19 23:04:36,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903728798] [2020-07-19 23:04:36,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873671051] [2020-07-19 23:04:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eef7f32 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:36,909 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4eef7f32 issued 2 check-sat command(s) [2020-07-19 23:04:36,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:36,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-19 23:04:36,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-19 23:04:37,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:37,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-19 23:04:37,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233435631] [2020-07-19 23:04:37,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-19 23:04:37,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-19 23:04:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=1637, Unknown=0, NotChecked=0, Total=2970 [2020-07-19 23:04:37,194 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 55 states. [2020-07-19 23:04:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:38,593 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-07-19 23:04:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-19 23:04:38,594 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 349 [2020-07-19 23:04:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:38,596 INFO L225 Difference]: With dead ends: 179 [2020-07-19 23:04:38,597 INFO L226 Difference]: Without dead ends: 175 [2020-07-19 23:04:38,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2020-07-19 23:04:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-19 23:04:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-07-19 23:04:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-07-19 23:04:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2020-07-19 23:04:38,606 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 349 [2020-07-19 23:04:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:38,607 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2020-07-19 23:04:38,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-19 23:04:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2020-07-19 23:04:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-19 23:04:38,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:38,610 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:38,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-07-19 23:04:38,824 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:38,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1560892900, now seen corresponding path program 49 times [2020-07-19 23:04:38,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:38,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195643285] [2020-07-19 23:04:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-19 23:04:44,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195643285] [2020-07-19 23:04:44,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608090433] [2020-07-19 23:04:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c108097 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:44,526 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c108097 issued 2 check-sat command(s) [2020-07-19 23:04:44,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:44,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-19 23:04:44,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-19 23:04:44,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:44,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 56 [2020-07-19 23:04:44,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146313958] [2020-07-19 23:04:44,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-19 23:04:44,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:44,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-19 23:04:44,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=1695, Unknown=0, NotChecked=0, Total=3080 [2020-07-19 23:04:44,799 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand 56 states. [2020-07-19 23:04:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:46,248 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2020-07-19 23:04:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-19 23:04:46,249 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 356 [2020-07-19 23:04:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:46,252 INFO L225 Difference]: With dead ends: 182 [2020-07-19 23:04:46,252 INFO L226 Difference]: Without dead ends: 178 [2020-07-19 23:04:46,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2020-07-19 23:04:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-19 23:04:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-19 23:04:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-19 23:04:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2020-07-19 23:04:46,261 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 356 [2020-07-19 23:04:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:46,261 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2020-07-19 23:04:46,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-19 23:04:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2020-07-19 23:04:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-07-19 23:04:46,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:46,264 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:46,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:46,480 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1352660861, now seen corresponding path program 50 times [2020-07-19 23:04:46,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:46,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097378653] [2020-07-19 23:04:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-19 23:04:52,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097378653] [2020-07-19 23:04:52,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855704719] [2020-07-19 23:04:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@740305d5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:52,607 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@740305d5 issued 2 check-sat command(s) [2020-07-19 23:04:52,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:04:52,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 104 conjunts are in the unsatisfiable core [2020-07-19 23:04:52,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:04:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-19 23:04:52,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:04:52,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-19 23:04:52,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047405963] [2020-07-19 23:04:52,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-19 23:04:52,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:04:52,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-19 23:04:52,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=1754, Unknown=0, NotChecked=0, Total=3192 [2020-07-19 23:04:52,843 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 57 states. [2020-07-19 23:04:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:04:54,338 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-07-19 23:04:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-19 23:04:54,339 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 363 [2020-07-19 23:04:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:04:54,341 INFO L225 Difference]: With dead ends: 185 [2020-07-19 23:04:54,342 INFO L226 Difference]: Without dead ends: 181 [2020-07-19 23:04:54,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2020-07-19 23:04:54,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-07-19 23:04:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-07-19 23:04:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-19 23:04:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2020-07-19 23:04:54,349 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 363 [2020-07-19 23:04:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:04:54,349 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2020-07-19 23:04:54,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-19 23:04:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2020-07-19 23:04:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-07-19 23:04:54,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:04:54,352 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:04:54,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:04:54,553 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:04:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:04:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash -722215290, now seen corresponding path program 51 times [2020-07-19 23:04:54,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:04:54,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243717624] [2020-07-19 23:04:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:04:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:04:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-19 23:05:00,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243717624] [2020-07-19 23:05:00,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43518382] [2020-07-19 23:05:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aa688ce No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:00,838 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5aa688ce issued 2 check-sat command(s) [2020-07-19 23:05:00,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-19 23:05:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-19 23:05:01,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:01,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 58 [2020-07-19 23:05:01,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676401242] [2020-07-19 23:05:01,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-19 23:05:01,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:01,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-19 23:05:01,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=1814, Unknown=0, NotChecked=0, Total=3306 [2020-07-19 23:05:01,093 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 58 states. [2020-07-19 23:05:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:02,644 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-07-19 23:05:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-19 23:05:02,648 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 370 [2020-07-19 23:05:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:02,650 INFO L225 Difference]: With dead ends: 188 [2020-07-19 23:05:02,650 INFO L226 Difference]: Without dead ends: 184 [2020-07-19 23:05:02,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2020-07-19 23:05:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-19 23:05:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-07-19 23:05:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-19 23:05:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2020-07-19 23:05:02,657 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 370 [2020-07-19 23:05:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:02,658 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2020-07-19 23:05:02,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-19 23:05:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2020-07-19 23:05:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-19 23:05:02,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:02,661 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:02,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-07-19 23:05:02,876 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash -148058983, now seen corresponding path program 52 times [2020-07-19 23:05:02,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:02,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792164725] [2020-07-19 23:05:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-19 23:05:09,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792164725] [2020-07-19 23:05:09,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18210339] [2020-07-19 23:05:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@178cf792 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:09,836 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@178cf792 issued 2 check-sat command(s) [2020-07-19 23:05:09,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:09,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-19 23:05:09,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-19 23:05:10,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:10,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-19 23:05:10,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024292105] [2020-07-19 23:05:10,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-19 23:05:10,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:10,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-19 23:05:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1547, Invalid=1875, Unknown=0, NotChecked=0, Total=3422 [2020-07-19 23:05:10,047 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand 59 states. [2020-07-19 23:05:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:11,612 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-07-19 23:05:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-19 23:05:11,613 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 377 [2020-07-19 23:05:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:11,615 INFO L225 Difference]: With dead ends: 191 [2020-07-19 23:05:11,615 INFO L226 Difference]: Without dead ends: 187 [2020-07-19 23:05:11,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2020-07-19 23:05:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-19 23:05:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-19 23:05:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-19 23:05:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2020-07-19 23:05:11,625 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 377 [2020-07-19 23:05:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:11,626 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2020-07-19 23:05:11,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-19 23:05:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2020-07-19 23:05:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-07-19 23:05:11,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:11,629 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:11,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:11,844 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2088040944, now seen corresponding path program 53 times [2020-07-19 23:05:11,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:11,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54050361] [2020-07-19 23:05:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-19 23:05:18,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54050361] [2020-07-19 23:05:18,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847979915] [2020-07-19 23:05:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b0d2128 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:18,947 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b0d2128 issued 2 check-sat command(s) [2020-07-19 23:05:18,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:18,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-19 23:05:18,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-19 23:05:19,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:19,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 60 [2020-07-19 23:05:19,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379300944] [2020-07-19 23:05:19,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-19 23:05:19,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:19,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-19 23:05:19,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=1937, Unknown=0, NotChecked=0, Total=3540 [2020-07-19 23:05:19,188 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand 60 states. [2020-07-19 23:05:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:20,823 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2020-07-19 23:05:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-07-19 23:05:20,823 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 384 [2020-07-19 23:05:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:20,826 INFO L225 Difference]: With dead ends: 194 [2020-07-19 23:05:20,826 INFO L226 Difference]: Without dead ends: 190 [2020-07-19 23:05:20,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2020-07-19 23:05:20,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-19 23:05:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-07-19 23:05:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-19 23:05:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 196 transitions. [2020-07-19 23:05:20,836 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 196 transitions. Word has length 384 [2020-07-19 23:05:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:20,837 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 196 transitions. [2020-07-19 23:05:20,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-19 23:05:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 196 transitions. [2020-07-19 23:05:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-19 23:05:20,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:20,840 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:21,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-07-19 23:05:21,054 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1685456465, now seen corresponding path program 54 times [2020-07-19 23:05:21,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:21,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471873682] [2020-07-19 23:05:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-19 23:05:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471873682] [2020-07-19 23:05:28,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800511874] [2020-07-19 23:05:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d66bcf0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:28,509 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d66bcf0 issued 2 check-sat command(s) [2020-07-19 23:05:28,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:28,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 112 conjunts are in the unsatisfiable core [2020-07-19 23:05:28,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-19 23:05:28,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:28,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-19 23:05:28,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290889009] [2020-07-19 23:05:28,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-19 23:05:28,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-19 23:05:28,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1660, Invalid=2000, Unknown=0, NotChecked=0, Total=3660 [2020-07-19 23:05:28,739 INFO L87 Difference]: Start difference. First operand 188 states and 196 transitions. Second operand 61 states. [2020-07-19 23:05:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:30,375 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2020-07-19 23:05:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-19 23:05:30,376 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 391 [2020-07-19 23:05:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:30,378 INFO L225 Difference]: With dead ends: 197 [2020-07-19 23:05:30,378 INFO L226 Difference]: Without dead ends: 193 [2020-07-19 23:05:30,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5020, Invalid=8552, Unknown=0, NotChecked=0, Total=13572 [2020-07-19 23:05:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-07-19 23:05:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-07-19 23:05:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-07-19 23:05:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2020-07-19 23:05:30,387 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 391 [2020-07-19 23:05:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:30,388 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2020-07-19 23:05:30,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-19 23:05:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2020-07-19 23:05:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-19 23:05:30,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:30,391 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:30,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-19 23:05:30,604 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1628873638, now seen corresponding path program 55 times [2020-07-19 23:05:30,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:30,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388755894] [2020-07-19 23:05:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-19 23:05:38,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388755894] [2020-07-19 23:05:38,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749691497] [2020-07-19 23:05:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3635c2c3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:38,317 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3635c2c3 issued 2 check-sat command(s) [2020-07-19 23:05:38,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:38,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 114 conjunts are in the unsatisfiable core [2020-07-19 23:05:38,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-19 23:05:38,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:38,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 62 [2020-07-19 23:05:38,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547486194] [2020-07-19 23:05:38,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-19 23:05:38,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:38,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-19 23:05:38,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1718, Invalid=2064, Unknown=0, NotChecked=0, Total=3782 [2020-07-19 23:05:38,555 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand 62 states. [2020-07-19 23:05:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:40,349 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2020-07-19 23:05:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-19 23:05:40,350 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 398 [2020-07-19 23:05:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:40,352 INFO L225 Difference]: With dead ends: 200 [2020-07-19 23:05:40,352 INFO L226 Difference]: Without dead ends: 196 [2020-07-19 23:05:40,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5195, Invalid=8847, Unknown=0, NotChecked=0, Total=14042 [2020-07-19 23:05:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-19 23:05:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-19 23:05:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-19 23:05:40,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-07-19 23:05:40,359 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 398 [2020-07-19 23:05:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:40,360 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-07-19 23:05:40,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-19 23:05:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-07-19 23:05:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-19 23:05:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:40,362 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:40,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:40,571 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:40,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1214763067, now seen corresponding path program 56 times [2020-07-19 23:05:40,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:40,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208191241] [2020-07-19 23:05:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-19 23:05:48,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208191241] [2020-07-19 23:05:48,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697885788] [2020-07-19 23:05:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@227baf3e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:49,034 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@227baf3e issued 2 check-sat command(s) [2020-07-19 23:05:49,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 116 conjunts are in the unsatisfiable core [2020-07-19 23:05:49,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-19 23:05:49,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:49,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-07-19 23:05:49,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466539017] [2020-07-19 23:05:49,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-19 23:05:49,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:49,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-19 23:05:49,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1777, Invalid=2129, Unknown=0, NotChecked=0, Total=3906 [2020-07-19 23:05:49,381 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 63 states. [2020-07-19 23:05:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:05:51,149 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2020-07-19 23:05:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-19 23:05:51,150 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 405 [2020-07-19 23:05:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:05:51,152 INFO L225 Difference]: With dead ends: 203 [2020-07-19 23:05:51,152 INFO L226 Difference]: Without dead ends: 199 [2020-07-19 23:05:51,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5373, Invalid=9147, Unknown=0, NotChecked=0, Total=14520 [2020-07-19 23:05:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-19 23:05:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-07-19 23:05:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-07-19 23:05:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-07-19 23:05:51,161 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 405 [2020-07-19 23:05:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:05:51,162 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-07-19 23:05:51,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-19 23:05:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-07-19 23:05:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-19 23:05:51,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:05:51,165 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:05:51,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-07-19 23:05:51,379 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:05:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:05:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash -383752764, now seen corresponding path program 57 times [2020-07-19 23:05:51,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:05:51,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547710236] [2020-07-19 23:05:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:05:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:05:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-19 23:05:59,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547710236] [2020-07-19 23:05:59,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138541012] [2020-07-19 23:05:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3cdb7707 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:05:59,519 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3cdb7707 issued 2 check-sat command(s) [2020-07-19 23:05:59,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:05:59,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 118 conjunts are in the unsatisfiable core [2020-07-19 23:05:59,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:05:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-19 23:05:59,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:05:59,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 64 [2020-07-19 23:05:59,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261632780] [2020-07-19 23:05:59,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-07-19 23:05:59,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:05:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-07-19 23:05:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1837, Invalid=2195, Unknown=0, NotChecked=0, Total=4032 [2020-07-19 23:05:59,781 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 64 states. [2020-07-19 23:06:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:06:01,544 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2020-07-19 23:06:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-19 23:06:01,545 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 412 [2020-07-19 23:06:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:06:01,547 INFO L225 Difference]: With dead ends: 206 [2020-07-19 23:06:01,547 INFO L226 Difference]: Without dead ends: 202 [2020-07-19 23:06:01,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5554, Invalid=9452, Unknown=0, NotChecked=0, Total=15006 [2020-07-19 23:06:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-19 23:06:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-07-19 23:06:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-19 23:06:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2020-07-19 23:06:01,557 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 412 [2020-07-19 23:06:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:06:01,557 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2020-07-19 23:06:01,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-07-19 23:06:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2020-07-19 23:06:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-07-19 23:06:01,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:06:01,560 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:06:01,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:01,775 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:06:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:06:01,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1310199515, now seen corresponding path program 58 times [2020-07-19 23:06:01,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:06:01,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013014418] [2020-07-19 23:06:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:06:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-19 23:06:10,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013014418] [2020-07-19 23:06:10,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023910592] [2020-07-19 23:06:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6099e58b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:10,494 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6099e58b issued 2 check-sat command(s) [2020-07-19 23:06:10,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:06:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 120 conjunts are in the unsatisfiable core [2020-07-19 23:06:10,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:06:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-19 23:06:10,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:06:10,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-07-19 23:06:10,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063457723] [2020-07-19 23:06:10,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-19 23:06:10,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:06:10,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-19 23:06:10,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1898, Invalid=2262, Unknown=0, NotChecked=0, Total=4160 [2020-07-19 23:06:10,742 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand 65 states. [2020-07-19 23:06:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:06:12,543 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2020-07-19 23:06:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-19 23:06:12,543 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 419 [2020-07-19 23:06:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:06:12,545 INFO L225 Difference]: With dead ends: 209 [2020-07-19 23:06:12,545 INFO L226 Difference]: Without dead ends: 205 [2020-07-19 23:06:12,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5738, Invalid=9762, Unknown=0, NotChecked=0, Total=15500 [2020-07-19 23:06:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-19 23:06:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-19 23:06:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-19 23:06:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2020-07-19 23:06:12,552 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 419 [2020-07-19 23:06:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:06:12,553 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2020-07-19 23:06:12,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-19 23:06:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2020-07-19 23:06:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-07-19 23:06:12,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:06:12,556 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:06:12,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-07-19 23:06:12,757 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:06:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:06:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash -783714770, now seen corresponding path program 59 times [2020-07-19 23:06:12,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:06:12,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302637830] [2020-07-19 23:06:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:06:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-19 23:06:21,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302637830] [2020-07-19 23:06:21,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584339292] [2020-07-19 23:06:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3cd42e67 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:21,815 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3cd42e67 issued 2 check-sat command(s) [2020-07-19 23:06:21,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:06:21,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 122 conjunts are in the unsatisfiable core [2020-07-19 23:06:21,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:06:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-19 23:06:22,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:06:22,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 66 [2020-07-19 23:06:22,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781814453] [2020-07-19 23:06:22,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-19 23:06:22,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:06:22,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-19 23:06:22,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1960, Invalid=2330, Unknown=0, NotChecked=0, Total=4290 [2020-07-19 23:06:22,153 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 66 states. [2020-07-19 23:06:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:06:24,077 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2020-07-19 23:06:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-07-19 23:06:24,078 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 426 [2020-07-19 23:06:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:06:24,080 INFO L225 Difference]: With dead ends: 212 [2020-07-19 23:06:24,080 INFO L226 Difference]: Without dead ends: 208 [2020-07-19 23:06:24,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5925, Invalid=10077, Unknown=0, NotChecked=0, Total=16002 [2020-07-19 23:06:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-19 23:06:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-07-19 23:06:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-19 23:06:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2020-07-19 23:06:24,089 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 426 [2020-07-19 23:06:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:06:24,090 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 214 transitions. [2020-07-19 23:06:24,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-19 23:06:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 214 transitions. [2020-07-19 23:06:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-19 23:06:24,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:06:24,092 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:06:24,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:24,295 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:06:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:06:24,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1486211343, now seen corresponding path program 60 times [2020-07-19 23:06:24,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:06:24,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412410535] [2020-07-19 23:06:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:06:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-19 23:06:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412410535] [2020-07-19 23:06:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391087519] [2020-07-19 23:06:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f7e0bc7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:33,998 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f7e0bc7 issued 2 check-sat command(s) [2020-07-19 23:06:33,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:06:34,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 124 conjunts are in the unsatisfiable core [2020-07-19 23:06:34,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:06:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-19 23:06:34,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:06:34,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-07-19 23:06:34,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656384163] [2020-07-19 23:06:34,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-19 23:06:34,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:06:34,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-19 23:06:34,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2023, Invalid=2399, Unknown=0, NotChecked=0, Total=4422 [2020-07-19 23:06:34,323 INFO L87 Difference]: Start difference. First operand 206 states and 214 transitions. Second operand 67 states. [2020-07-19 23:06:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:06:36,337 INFO L93 Difference]: Finished difference Result 215 states and 225 transitions. [2020-07-19 23:06:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-19 23:06:36,338 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 433 [2020-07-19 23:06:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:06:36,340 INFO L225 Difference]: With dead ends: 215 [2020-07-19 23:06:36,340 INFO L226 Difference]: Without dead ends: 211 [2020-07-19 23:06:36,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6115, Invalid=10397, Unknown=0, NotChecked=0, Total=16512 [2020-07-19 23:06:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-19 23:06:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-07-19 23:06:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-19 23:06:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 217 transitions. [2020-07-19 23:06:36,348 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 217 transitions. Word has length 433 [2020-07-19 23:06:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:06:36,349 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 217 transitions. [2020-07-19 23:06:36,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-19 23:06:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 217 transitions. [2020-07-19 23:06:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-07-19 23:06:36,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:06:36,351 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:06:36,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-07-19 23:06:36,552 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:06:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:06:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1191973480, now seen corresponding path program 61 times [2020-07-19 23:06:36,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:06:36,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634838333] [2020-07-19 23:06:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:06:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-19 23:06:47,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634838333] [2020-07-19 23:06:47,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241775648] [2020-07-19 23:06:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a70f6dc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:47,498 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a70f6dc issued 2 check-sat command(s) [2020-07-19 23:06:47,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:06:47,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 126 conjunts are in the unsatisfiable core [2020-07-19 23:06:47,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:06:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-19 23:06:47,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:06:47,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 68 [2020-07-19 23:06:47,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922789238] [2020-07-19 23:06:47,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-19 23:06:47,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:06:47,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-19 23:06:47,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2087, Invalid=2469, Unknown=0, NotChecked=0, Total=4556 [2020-07-19 23:06:47,814 INFO L87 Difference]: Start difference. First operand 209 states and 217 transitions. Second operand 68 states. [2020-07-19 23:06:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:06:49,996 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-07-19 23:06:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-19 23:06:49,997 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 440 [2020-07-19 23:06:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:06:49,999 INFO L225 Difference]: With dead ends: 218 [2020-07-19 23:06:49,999 INFO L226 Difference]: Without dead ends: 214 [2020-07-19 23:06:50,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3905 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6308, Invalid=10722, Unknown=0, NotChecked=0, Total=17030 [2020-07-19 23:06:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-19 23:06:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-19 23:06:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-19 23:06:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2020-07-19 23:06:50,010 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 440 [2020-07-19 23:06:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:06:50,010 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2020-07-19 23:06:50,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-19 23:06:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2020-07-19 23:06:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-19 23:06:50,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:06:50,015 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:06:50,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:06:50,230 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:06:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:06:50,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1349564409, now seen corresponding path program 62 times [2020-07-19 23:06:50,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:06:50,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362053609] [2020-07-19 23:06:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:06:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:06:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-19 23:07:02,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362053609] [2020-07-19 23:07:02,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853618022] [2020-07-19 23:07:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@61465948 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:07:02,769 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@61465948 issued 2 check-sat command(s) [2020-07-19 23:07:02,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:07:02,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 128 conjunts are in the unsatisfiable core [2020-07-19 23:07:02,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:07:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-19 23:07:03,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:07:03,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-07-19 23:07:03,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644941395] [2020-07-19 23:07:03,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-19 23:07:03,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:07:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-19 23:07:03,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2152, Invalid=2540, Unknown=0, NotChecked=0, Total=4692 [2020-07-19 23:07:03,075 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand 69 states. [2020-07-19 23:07:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:07:05,171 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2020-07-19 23:07:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-19 23:07:05,172 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 447 [2020-07-19 23:07:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:07:05,175 INFO L225 Difference]: With dead ends: 221 [2020-07-19 23:07:05,175 INFO L226 Difference]: Without dead ends: 217 [2020-07-19 23:07:05,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6504, Invalid=11052, Unknown=0, NotChecked=0, Total=17556 [2020-07-19 23:07:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-19 23:07:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-07-19 23:07:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-19 23:07:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 223 transitions. [2020-07-19 23:07:05,184 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 223 transitions. Word has length 447 [2020-07-19 23:07:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:07:05,184 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 223 transitions. [2020-07-19 23:07:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-19 23:07:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 223 transitions. [2020-07-19 23:07:05,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-07-19 23:07:05,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:07:05,187 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:07:05,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-07-19 23:07:05,402 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:07:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:07:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash 252652546, now seen corresponding path program 63 times [2020-07-19 23:07:05,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:07:05,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752298769] [2020-07-19 23:07:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:07:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-19 23:07:15,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752298769] [2020-07-19 23:07:15,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771426265] [2020-07-19 23:07:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a3cd090 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:07:15,803 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a3cd090 issued 2 check-sat command(s) [2020-07-19 23:07:15,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:07:15,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 130 conjunts are in the unsatisfiable core [2020-07-19 23:07:15,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:07:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-19 23:07:16,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:07:16,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2020-07-19 23:07:16,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601755300] [2020-07-19 23:07:16,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-07-19 23:07:16,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:07:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-07-19 23:07:16,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2218, Invalid=2612, Unknown=0, NotChecked=0, Total=4830 [2020-07-19 23:07:16,106 INFO L87 Difference]: Start difference. First operand 215 states and 223 transitions. Second operand 70 states. [2020-07-19 23:07:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:07:18,298 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2020-07-19 23:07:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-19 23:07:18,299 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 454 [2020-07-19 23:07:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:07:18,301 INFO L225 Difference]: With dead ends: 224 [2020-07-19 23:07:18,301 INFO L226 Difference]: Without dead ends: 220 [2020-07-19 23:07:18,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6703, Invalid=11387, Unknown=0, NotChecked=0, Total=18090 [2020-07-19 23:07:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-19 23:07:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2020-07-19 23:07:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-19 23:07:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-07-19 23:07:18,312 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 454 [2020-07-19 23:07:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:07:18,313 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-07-19 23:07:18,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-07-19 23:07:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-07-19 23:07:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-19 23:07:18,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:07:18,316 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:07:18,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:07:18,517 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:07:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:07:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1411899933, now seen corresponding path program 64 times [2020-07-19 23:07:18,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:07:18,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801192532] [2020-07-19 23:07:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:07:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-19 23:07:30,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801192532] [2020-07-19 23:07:30,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043515190] [2020-07-19 23:07:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c481b8f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:07:30,251 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c481b8f issued 2 check-sat command(s) [2020-07-19 23:07:30,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:07:30,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 132 conjunts are in the unsatisfiable core [2020-07-19 23:07:30,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:07:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-19 23:07:30,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:07:30,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-07-19 23:07:30,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599759471] [2020-07-19 23:07:30,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-19 23:07:30,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:07:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-19 23:07:30,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2285, Invalid=2685, Unknown=0, NotChecked=0, Total=4970 [2020-07-19 23:07:30,541 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 71 states. [2020-07-19 23:07:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:07:32,888 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-19 23:07:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-19 23:07:32,889 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 461 [2020-07-19 23:07:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:07:32,891 INFO L225 Difference]: With dead ends: 227 [2020-07-19 23:07:32,891 INFO L226 Difference]: Without dead ends: 223 [2020-07-19 23:07:32,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6905, Invalid=11727, Unknown=0, NotChecked=0, Total=18632 [2020-07-19 23:07:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-19 23:07:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-19 23:07:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-19 23:07:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2020-07-19 23:07:32,900 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 461 [2020-07-19 23:07:32,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:07:32,901 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2020-07-19 23:07:32,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-19 23:07:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2020-07-19 23:07:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-19 23:07:32,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:07:32,904 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:07:33,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-07-19 23:07:33,119 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:07:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:07:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1911198060, now seen corresponding path program 65 times [2020-07-19 23:07:33,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:07:33,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187288840] [2020-07-19 23:07:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:07:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-19 23:07:45,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187288840] [2020-07-19 23:07:45,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196822319] [2020-07-19 23:07:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294340de No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:07:45,649 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@294340de issued 2 check-sat command(s) [2020-07-19 23:07:45,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:07:45,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 134 conjunts are in the unsatisfiable core [2020-07-19 23:07:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:07:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-19 23:07:46,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:07:46,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2020-07-19 23:07:46,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831197511] [2020-07-19 23:07:46,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-19 23:07:46,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:07:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-19 23:07:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=2759, Unknown=0, NotChecked=0, Total=5112 [2020-07-19 23:07:46,023 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand 72 states. [2020-07-19 23:07:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:07:48,430 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2020-07-19 23:07:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-07-19 23:07:48,431 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 468 [2020-07-19 23:07:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:07:48,434 INFO L225 Difference]: With dead ends: 230 [2020-07-19 23:07:48,434 INFO L226 Difference]: Without dead ends: 226 [2020-07-19 23:07:48,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7110, Invalid=12072, Unknown=0, NotChecked=0, Total=19182 [2020-07-19 23:07:48,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-19 23:07:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-07-19 23:07:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-19 23:07:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2020-07-19 23:07:48,442 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 468 [2020-07-19 23:07:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:07:48,443 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2020-07-19 23:07:48,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-19 23:07:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2020-07-19 23:07:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-07-19 23:07:48,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:07:48,446 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:07:48,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-19 23:07:48,661 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:07:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:07:48,661 INFO L82 PathProgramCache]: Analyzing trace with hash -495672013, now seen corresponding path program 66 times [2020-07-19 23:07:48,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:07:48,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671661779] [2020-07-19 23:07:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:07:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:07:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-19 23:08:00,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671661779] [2020-07-19 23:08:00,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595174618] [2020-07-19 23:08:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@267557a6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:00,386 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@267557a6 issued 2 check-sat command(s) [2020-07-19 23:08:00,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:08:00,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 136 conjunts are in the unsatisfiable core [2020-07-19 23:08:00,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:08:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-19 23:08:00,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:08:00,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-07-19 23:08:00,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033924827] [2020-07-19 23:08:00,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-19 23:08:00,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:08:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-19 23:08:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2422, Invalid=2834, Unknown=0, NotChecked=0, Total=5256 [2020-07-19 23:08:00,783 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand 73 states. [2020-07-19 23:08:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:08:03,169 INFO L93 Difference]: Finished difference Result 233 states and 243 transitions. [2020-07-19 23:08:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-19 23:08:03,170 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 475 [2020-07-19 23:08:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:08:03,172 INFO L225 Difference]: With dead ends: 233 [2020-07-19 23:08:03,172 INFO L226 Difference]: Without dead ends: 229 [2020-07-19 23:08:03,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=7318, Invalid=12422, Unknown=0, NotChecked=0, Total=19740 [2020-07-19 23:08:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-19 23:08:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-07-19 23:08:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-19 23:08:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2020-07-19 23:08:03,182 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 475 [2020-07-19 23:08:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:08:03,182 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2020-07-19 23:08:03,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-19 23:08:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2020-07-19 23:08:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-07-19 23:08:03,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:08:03,186 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:08:03,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-19 23:08:03,402 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:08:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:08:03,403 INFO L82 PathProgramCache]: Analyzing trace with hash -785023530, now seen corresponding path program 67 times [2020-07-19 23:08:03,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:08:03,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751476464] [2020-07-19 23:08:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:08:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-19 23:08:15,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751476464] [2020-07-19 23:08:15,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261418794] [2020-07-19 23:08:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@666cd138 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:15,782 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@666cd138 issued 2 check-sat command(s) [2020-07-19 23:08:15,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:08:15,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 138 conjunts are in the unsatisfiable core [2020-07-19 23:08:15,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:08:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-19 23:08:16,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:08:16,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 74 [2020-07-19 23:08:16,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532020712] [2020-07-19 23:08:16,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-19 23:08:16,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:08:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-19 23:08:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2492, Invalid=2910, Unknown=0, NotChecked=0, Total=5402 [2020-07-19 23:08:16,105 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 74 states. [2020-07-19 23:08:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:08:18,640 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2020-07-19 23:08:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-19 23:08:18,641 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 482 [2020-07-19 23:08:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:08:18,643 INFO L225 Difference]: With dead ends: 236 [2020-07-19 23:08:18,643 INFO L226 Difference]: Without dead ends: 232 [2020-07-19 23:08:18,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4691 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7529, Invalid=12777, Unknown=0, NotChecked=0, Total=20306 [2020-07-19 23:08:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-19 23:08:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-19 23:08:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-19 23:08:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2020-07-19 23:08:18,652 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 482 [2020-07-19 23:08:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:08:18,653 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 238 transitions. [2020-07-19 23:08:18,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-19 23:08:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 238 transitions. [2020-07-19 23:08:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-19 23:08:18,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:08:18,657 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:08:18,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:18,867 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:08:18,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:08:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1700147529, now seen corresponding path program 68 times [2020-07-19 23:08:18,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:08:18,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856960881] [2020-07-19 23:08:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:08:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-19 23:08:31,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856960881] [2020-07-19 23:08:31,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69858648] [2020-07-19 23:08:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@42d85f30 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:32,090 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@42d85f30 issued 2 check-sat command(s) [2020-07-19 23:08:32,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:08:32,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 140 conjunts are in the unsatisfiable core [2020-07-19 23:08:32,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:08:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-19 23:08:32,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:08:32,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-07-19 23:08:32,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922474704] [2020-07-19 23:08:32,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-19 23:08:32,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:08:32,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-19 23:08:32,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2563, Invalid=2987, Unknown=0, NotChecked=0, Total=5550 [2020-07-19 23:08:32,429 INFO L87 Difference]: Start difference. First operand 230 states and 238 transitions. Second operand 75 states. [2020-07-19 23:08:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:08:35,071 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2020-07-19 23:08:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-19 23:08:35,072 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 489 [2020-07-19 23:08:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:08:35,074 INFO L225 Difference]: With dead ends: 239 [2020-07-19 23:08:35,074 INFO L226 Difference]: Without dead ends: 235 [2020-07-19 23:08:35,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7743, Invalid=13137, Unknown=0, NotChecked=0, Total=20880 [2020-07-19 23:08:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-19 23:08:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-07-19 23:08:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-07-19 23:08:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 241 transitions. [2020-07-19 23:08:35,081 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 241 transitions. Word has length 489 [2020-07-19 23:08:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:08:35,081 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 241 transitions. [2020-07-19 23:08:35,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-19 23:08:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 241 transitions. [2020-07-19 23:08:35,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-07-19 23:08:35,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:08:35,084 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:08:35,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-07-19 23:08:35,285 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:08:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:08:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1879092928, now seen corresponding path program 69 times [2020-07-19 23:08:35,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:08:35,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518860799] [2020-07-19 23:08:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:08:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-19 23:08:49,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518860799] [2020-07-19 23:08:49,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219207382] [2020-07-19 23:08:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68fe1839 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:49,278 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68fe1839 issued 2 check-sat command(s) [2020-07-19 23:08:49,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:08:49,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-19 23:08:49,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:08:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-19 23:08:49,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:08:49,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 76 [2020-07-19 23:08:49,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692945246] [2020-07-19 23:08:49,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-19 23:08:49,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:08:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-19 23:08:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2635, Invalid=3065, Unknown=0, NotChecked=0, Total=5700 [2020-07-19 23:08:49,611 INFO L87 Difference]: Start difference. First operand 233 states and 241 transitions. Second operand 76 states. [2020-07-19 23:08:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:08:52,358 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2020-07-19 23:08:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-19 23:08:52,360 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 496 [2020-07-19 23:08:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:08:52,362 INFO L225 Difference]: With dead ends: 242 [2020-07-19 23:08:52,362 INFO L226 Difference]: Without dead ends: 238 [2020-07-19 23:08:52,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7960, Invalid=13502, Unknown=0, NotChecked=0, Total=21462 [2020-07-19 23:08:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-19 23:08:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-19 23:08:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-19 23:08:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 244 transitions. [2020-07-19 23:08:52,373 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 244 transitions. Word has length 496 [2020-07-19 23:08:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:08:52,374 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 244 transitions. [2020-07-19 23:08:52,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-19 23:08:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 244 transitions. [2020-07-19 23:08:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-19 23:08:52,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:08:52,380 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:08:52,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:08:52,596 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:08:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:08:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 55387743, now seen corresponding path program 70 times [2020-07-19 23:08:52,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:08:52,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526207468] [2020-07-19 23:08:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:08:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:08:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-19 23:09:08,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526207468] [2020-07-19 23:09:08,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455930558] [2020-07-19 23:09:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@715b6c6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:09:09,090 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@715b6c6 issued 2 check-sat command(s) [2020-07-19 23:09:09,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:09:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 144 conjunts are in the unsatisfiable core [2020-07-19 23:09:09,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:09:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-19 23:09:09,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:09:09,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-07-19 23:09:09,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732000016] [2020-07-19 23:09:09,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-19 23:09:09,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:09:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-19 23:09:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2708, Invalid=3144, Unknown=0, NotChecked=0, Total=5852 [2020-07-19 23:09:09,504 INFO L87 Difference]: Start difference. First operand 236 states and 244 transitions. Second operand 77 states. [2020-07-19 23:09:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:09:12,354 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2020-07-19 23:09:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-19 23:09:12,355 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 503 [2020-07-19 23:09:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:09:12,357 INFO L225 Difference]: With dead ends: 245 [2020-07-19 23:09:12,357 INFO L226 Difference]: Without dead ends: 241 [2020-07-19 23:09:12,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5111 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=8180, Invalid=13872, Unknown=0, NotChecked=0, Total=22052 [2020-07-19 23:09:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-19 23:09:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-19 23:09:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-19 23:09:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 247 transitions. [2020-07-19 23:09:12,367 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 247 transitions. Word has length 503 [2020-07-19 23:09:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:09:12,368 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 247 transitions. [2020-07-19 23:09:12,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-19 23:09:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 247 transitions. [2020-07-19 23:09:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-07-19 23:09:12,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:09:12,373 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:09:12,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2020-07-19 23:09:12,588 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:09:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:09:12,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1497928790, now seen corresponding path program 71 times [2020-07-19 23:09:12,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:09:12,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492554443] [2020-07-19 23:09:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:09:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-19 23:09:30,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492554443] [2020-07-19 23:09:30,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808489646] [2020-07-19 23:09:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3009df No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:09:30,774 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3009df issued 2 check-sat command(s) [2020-07-19 23:09:30,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:09:30,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 146 conjunts are in the unsatisfiable core [2020-07-19 23:09:30,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:09:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-19 23:09:31,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:09:31,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 78 [2020-07-19 23:09:31,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991173744] [2020-07-19 23:09:31,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-19 23:09:31,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:09:31,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-19 23:09:31,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2782, Invalid=3224, Unknown=0, NotChecked=0, Total=6006 [2020-07-19 23:09:31,187 INFO L87 Difference]: Start difference. First operand 239 states and 247 transitions. Second operand 78 states. [2020-07-19 23:09:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:09:34,133 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-07-19 23:09:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-19 23:09:34,134 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 510 [2020-07-19 23:09:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:09:34,136 INFO L225 Difference]: With dead ends: 248 [2020-07-19 23:09:34,136 INFO L226 Difference]: Without dead ends: 244 [2020-07-19 23:09:34,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5255 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=8403, Invalid=14247, Unknown=0, NotChecked=0, Total=22650 [2020-07-19 23:09:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-19 23:09:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-07-19 23:09:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-19 23:09:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-07-19 23:09:34,145 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 510 [2020-07-19 23:09:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:09:34,146 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-07-19 23:09:34,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-19 23:09:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-07-19 23:09:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-07-19 23:09:34,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:09:34,150 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:09:34,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:09:34,356 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:09:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:09:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1551508597, now seen corresponding path program 72 times [2020-07-19 23:09:34,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:09:34,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460429555] [2020-07-19 23:09:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:09:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-19 23:09:52,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460429555] [2020-07-19 23:09:52,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514273359] [2020-07-19 23:09:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b70e50 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:09:52,318 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b70e50 issued 2 check-sat command(s) [2020-07-19 23:09:52,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:09:52,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 148 conjunts are in the unsatisfiable core [2020-07-19 23:09:52,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:09:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-19 23:09:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:09:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-07-19 23:09:52,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725048204] [2020-07-19 23:09:52,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-19 23:09:52,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:09:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-19 23:09:52,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2857, Invalid=3305, Unknown=0, NotChecked=0, Total=6162 [2020-07-19 23:09:52,745 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 79 states. [2020-07-19 23:09:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:09:55,894 INFO L93 Difference]: Finished difference Result 251 states and 261 transitions. [2020-07-19 23:09:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-19 23:09:55,895 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 517 [2020-07-19 23:09:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:09:55,897 INFO L225 Difference]: With dead ends: 251 [2020-07-19 23:09:55,897 INFO L226 Difference]: Without dead ends: 247 [2020-07-19 23:09:55,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=8629, Invalid=14627, Unknown=0, NotChecked=0, Total=23256 [2020-07-19 23:09:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-07-19 23:09:55,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-07-19 23:09:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-19 23:09:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2020-07-19 23:09:55,906 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 517 [2020-07-19 23:09:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:09:55,907 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 253 transitions. [2020-07-19 23:09:55,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-19 23:09:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 253 transitions. [2020-07-19 23:09:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-19 23:09:55,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:09:55,910 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:09:56,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:09:56,112 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:09:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:09:56,113 INFO L82 PathProgramCache]: Analyzing trace with hash -986895084, now seen corresponding path program 73 times [2020-07-19 23:09:56,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:09:56,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127389126] [2020-07-19 23:09:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:09:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:09:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-19 23:10:12,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127389126] [2020-07-19 23:10:12,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678652542] [2020-07-19 23:10:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d435b5d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:10:13,027 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d435b5d issued 2 check-sat command(s) [2020-07-19 23:10:13,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:10:13,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 150 conjunts are in the unsatisfiable core [2020-07-19 23:10:13,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:10:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-19 23:10:13,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:10:13,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 80 [2020-07-19 23:10:13,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536600302] [2020-07-19 23:10:13,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-19 23:10:13,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:10:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-19 23:10:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2933, Invalid=3387, Unknown=0, NotChecked=0, Total=6320 [2020-07-19 23:10:13,380 INFO L87 Difference]: Start difference. First operand 245 states and 253 transitions. Second operand 80 states. [2020-07-19 23:10:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:10:16,411 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-19 23:10:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-19 23:10:16,412 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 524 [2020-07-19 23:10:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:10:16,414 INFO L225 Difference]: With dead ends: 254 [2020-07-19 23:10:16,414 INFO L226 Difference]: Without dead ends: 250 [2020-07-19 23:10:16,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=8858, Invalid=15012, Unknown=0, NotChecked=0, Total=23870 [2020-07-19 23:10:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-19 23:10:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-19 23:10:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-19 23:10:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 256 transitions. [2020-07-19 23:10:16,422 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 256 transitions. Word has length 524 [2020-07-19 23:10:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:10:16,423 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 256 transitions. [2020-07-19 23:10:16,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-19 23:10:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 256 transitions. [2020-07-19 23:10:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-19 23:10:16,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:10:16,426 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:10:16,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:10:16,628 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:10:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:10:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash -392311925, now seen corresponding path program 74 times [2020-07-19 23:10:16,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:10:16,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34389893] [2020-07-19 23:10:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:10:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-19 23:10:33,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34389893] [2020-07-19 23:10:33,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912638560] [2020-07-19 23:10:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ec8b141 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:10:33,701 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ec8b141 issued 2 check-sat command(s) [2020-07-19 23:10:33,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:10:33,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 152 conjunts are in the unsatisfiable core [2020-07-19 23:10:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:10:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-19 23:10:34,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:10:34,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-07-19 23:10:34,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152970980] [2020-07-19 23:10:34,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-19 23:10:34,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:10:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-19 23:10:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3010, Invalid=3470, Unknown=0, NotChecked=0, Total=6480 [2020-07-19 23:10:34,068 INFO L87 Difference]: Start difference. First operand 248 states and 256 transitions. Second operand 81 states. [2020-07-19 23:10:37,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:10:37,311 INFO L93 Difference]: Finished difference Result 257 states and 267 transitions. [2020-07-19 23:10:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-19 23:10:37,312 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 531 [2020-07-19 23:10:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:10:37,314 INFO L225 Difference]: With dead ends: 257 [2020-07-19 23:10:37,314 INFO L226 Difference]: Without dead ends: 253 [2020-07-19 23:10:37,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5699 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9090, Invalid=15402, Unknown=0, NotChecked=0, Total=24492 [2020-07-19 23:10:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-19 23:10:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2020-07-19 23:10:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-07-19 23:10:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2020-07-19 23:10:37,323 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 531 [2020-07-19 23:10:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:10:37,324 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2020-07-19 23:10:37,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-19 23:10:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2020-07-19 23:10:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-07-19 23:10:37,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:10:37,327 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:10:37,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-07-19 23:10:37,528 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:10:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:10:37,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1955591550, now seen corresponding path program 75 times [2020-07-19 23:10:37,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:10:37,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796202308] [2020-07-19 23:10:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:10:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-19 23:10:54,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796202308] [2020-07-19 23:10:54,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076254250] [2020-07-19 23:10:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d11cf3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:10:54,424 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d11cf3 issued 2 check-sat command(s) [2020-07-19 23:10:54,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:10:54,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 154 conjunts are in the unsatisfiable core [2020-07-19 23:10:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:10:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-19 23:10:54,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:10:54,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 82 [2020-07-19 23:10:54,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113673403] [2020-07-19 23:10:54,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-07-19 23:10:54,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:10:54,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-07-19 23:10:54,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3088, Invalid=3554, Unknown=0, NotChecked=0, Total=6642 [2020-07-19 23:10:54,784 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand 82 states. [2020-07-19 23:10:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:10:58,053 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2020-07-19 23:10:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-19 23:10:58,054 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 538 [2020-07-19 23:10:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:10:58,056 INFO L225 Difference]: With dead ends: 260 [2020-07-19 23:10:58,056 INFO L226 Difference]: Without dead ends: 256 [2020-07-19 23:10:58,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5851 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9325, Invalid=15797, Unknown=0, NotChecked=0, Total=25122 [2020-07-19 23:10:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-19 23:10:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-07-19 23:10:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-19 23:10:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 262 transitions. [2020-07-19 23:10:58,064 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 262 transitions. Word has length 538 [2020-07-19 23:10:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:10:58,065 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 262 transitions. [2020-07-19 23:10:58,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-07-19 23:10:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 262 transitions. [2020-07-19 23:10:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-19 23:10:58,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:10:58,069 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:10:58,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:10:58,281 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:10:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:10:58,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1427684257, now seen corresponding path program 76 times [2020-07-19 23:10:58,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:10:58,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508058226] [2020-07-19 23:10:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:10:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:10:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-19 23:11:15,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508058226] [2020-07-19 23:11:15,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394141956] [2020-07-19 23:11:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60dbc954 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:11:15,534 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60dbc954 issued 2 check-sat command(s) [2020-07-19 23:11:15,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:11:15,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 156 conjunts are in the unsatisfiable core [2020-07-19 23:11:15,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:11:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-19 23:11:15,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:11:15,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-07-19 23:11:15,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908413830] [2020-07-19 23:11:15,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-19 23:11:15,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:11:15,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-19 23:11:15,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3167, Invalid=3639, Unknown=0, NotChecked=0, Total=6806 [2020-07-19 23:11:15,907 INFO L87 Difference]: Start difference. First operand 254 states and 262 transitions. Second operand 83 states. [2020-07-19 23:11:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:11:19,205 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2020-07-19 23:11:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-19 23:11:19,206 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 545 [2020-07-19 23:11:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:11:19,208 INFO L225 Difference]: With dead ends: 263 [2020-07-19 23:11:19,208 INFO L226 Difference]: Without dead ends: 259 [2020-07-19 23:11:19,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9563, Invalid=16197, Unknown=0, NotChecked=0, Total=25760 [2020-07-19 23:11:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-19 23:11:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-19 23:11:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-19 23:11:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2020-07-19 23:11:19,217 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 545 [2020-07-19 23:11:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:11:19,217 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 265 transitions. [2020-07-19 23:11:19,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-19 23:11:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 265 transitions. [2020-07-19 23:11:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-07-19 23:11:19,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:11:19,222 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:11:19,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:11:19,438 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:11:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:11:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash 963585256, now seen corresponding path program 77 times [2020-07-19 23:11:19,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:11:19,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405198837] [2020-07-19 23:11:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:11:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-19 23:11:37,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405198837] [2020-07-19 23:11:37,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250847480] [2020-07-19 23:11:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20670cd5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:11:37,565 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20670cd5 issued 2 check-sat command(s) [2020-07-19 23:11:37,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:11:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 158 conjunts are in the unsatisfiable core [2020-07-19 23:11:37,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:11:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-19 23:11:37,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:11:37,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 84 [2020-07-19 23:11:37,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786467522] [2020-07-19 23:11:37,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-19 23:11:37,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:11:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-19 23:11:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3247, Invalid=3725, Unknown=0, NotChecked=0, Total=6972 [2020-07-19 23:11:37,945 INFO L87 Difference]: Start difference. First operand 257 states and 265 transitions. Second operand 84 states. [2020-07-19 23:11:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:11:41,303 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2020-07-19 23:11:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-07-19 23:11:41,304 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 552 [2020-07-19 23:11:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:11:41,307 INFO L225 Difference]: With dead ends: 266 [2020-07-19 23:11:41,307 INFO L226 Difference]: Without dead ends: 262 [2020-07-19 23:11:41,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=9804, Invalid=16602, Unknown=0, NotChecked=0, Total=26406 [2020-07-19 23:11:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-07-19 23:11:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-07-19 23:11:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-19 23:11:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 268 transitions. [2020-07-19 23:11:41,314 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 268 transitions. Word has length 552 [2020-07-19 23:11:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:11:41,315 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 268 transitions. [2020-07-19 23:11:41,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-19 23:11:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 268 transitions. [2020-07-19 23:11:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-07-19 23:11:41,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:11:41,318 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:11:41,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-07-19 23:11:41,532 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:11:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:11:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash -487877449, now seen corresponding path program 78 times [2020-07-19 23:11:41,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:11:41,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592104553] [2020-07-19 23:11:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:11:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:11:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-19 23:12:00,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592104553] [2020-07-19 23:12:00,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024600302] [2020-07-19 23:12:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52d6929c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:12:00,351 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@52d6929c issued 2 check-sat command(s) [2020-07-19 23:12:00,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:12:00,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 160 conjunts are in the unsatisfiable core [2020-07-19 23:12:00,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:12:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-19 23:12:00,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:12:00,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-07-19 23:12:00,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117872573] [2020-07-19 23:12:00,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-19 23:12:00,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:12:00,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-19 23:12:00,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3328, Invalid=3812, Unknown=0, NotChecked=0, Total=7140 [2020-07-19 23:12:00,738 INFO L87 Difference]: Start difference. First operand 260 states and 268 transitions. Second operand 85 states. [2020-07-19 23:12:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:12:04,250 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2020-07-19 23:12:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-19 23:12:04,252 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 559 [2020-07-19 23:12:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:12:04,254 INFO L225 Difference]: With dead ends: 269 [2020-07-19 23:12:04,254 INFO L226 Difference]: Without dead ends: 265 [2020-07-19 23:12:04,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=10048, Invalid=17012, Unknown=0, NotChecked=0, Total=27060 [2020-07-19 23:12:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-19 23:12:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-07-19 23:12:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-19 23:12:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 271 transitions. [2020-07-19 23:12:04,262 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 271 transitions. Word has length 559 [2020-07-19 23:12:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:12:04,263 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 271 transitions. [2020-07-19 23:12:04,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-19 23:12:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 271 transitions. [2020-07-19 23:12:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-07-19 23:12:04,266 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:12:04,266 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:12:04,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-19 23:12:04,467 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:12:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:12:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1246094510, now seen corresponding path program 79 times [2020-07-19 23:12:04,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:12:04,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872881633] [2020-07-19 23:12:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:12:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-19 23:12:24,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872881633] [2020-07-19 23:12:24,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395325435] [2020-07-19 23:12:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@782a388f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:12:24,317 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@782a388f issued 2 check-sat command(s) [2020-07-19 23:12:24,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:12:24,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 162 conjunts are in the unsatisfiable core [2020-07-19 23:12:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:12:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-19 23:12:25,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:12:25,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 86 [2020-07-19 23:12:25,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505201343] [2020-07-19 23:12:25,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-19 23:12:25,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:12:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-19 23:12:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3410, Invalid=3900, Unknown=0, NotChecked=0, Total=7310 [2020-07-19 23:12:25,009 INFO L87 Difference]: Start difference. First operand 263 states and 271 transitions. Second operand 86 states. [2020-07-19 23:12:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:12:28,615 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2020-07-19 23:12:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-19 23:12:28,616 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 566 [2020-07-19 23:12:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:12:28,618 INFO L225 Difference]: With dead ends: 272 [2020-07-19 23:12:28,618 INFO L226 Difference]: Without dead ends: 268 [2020-07-19 23:12:28,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=10295, Invalid=17427, Unknown=0, NotChecked=0, Total=27722 [2020-07-19 23:12:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-19 23:12:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-19 23:12:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-19 23:12:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-07-19 23:12:28,628 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 566 [2020-07-19 23:12:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:12:28,628 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-07-19 23:12:28,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-19 23:12:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-07-19 23:12:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-07-19 23:12:28,632 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:12:28,632 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:12:28,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:12:28,833 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:12:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:12:28,834 INFO L82 PathProgramCache]: Analyzing trace with hash -994642227, now seen corresponding path program 80 times [2020-07-19 23:12:28,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:12:28,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45593149] [2020-07-19 23:12:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:12:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-19 23:12:49,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45593149] [2020-07-19 23:12:49,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385461335] [2020-07-19 23:12:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430eea05 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:12:49,249 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@430eea05 issued 2 check-sat command(s) [2020-07-19 23:12:49,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:12:49,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 164 conjunts are in the unsatisfiable core [2020-07-19 23:12:49,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:12:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-19 23:12:49,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:12:49,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-07-19 23:12:49,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616497102] [2020-07-19 23:12:49,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-19 23:12:49,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:12:49,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-19 23:12:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3493, Invalid=3989, Unknown=0, NotChecked=0, Total=7482 [2020-07-19 23:12:49,686 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 87 states. [2020-07-19 23:12:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:12:53,337 INFO L93 Difference]: Finished difference Result 275 states and 285 transitions. [2020-07-19 23:12:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-19 23:12:53,338 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 573 [2020-07-19 23:12:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:12:53,341 INFO L225 Difference]: With dead ends: 275 [2020-07-19 23:12:53,341 INFO L226 Difference]: Without dead ends: 271 [2020-07-19 23:12:53,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6641 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=10545, Invalid=17847, Unknown=0, NotChecked=0, Total=28392 [2020-07-19 23:12:53,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-19 23:12:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2020-07-19 23:12:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-19 23:12:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2020-07-19 23:12:53,350 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 573 [2020-07-19 23:12:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:12:53,350 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2020-07-19 23:12:53,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-19 23:12:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2020-07-19 23:12:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-07-19 23:12:53,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:12:53,354 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:12:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:12:53,555 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:12:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:12:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash -893372228, now seen corresponding path program 81 times [2020-07-19 23:12:53,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:12:53,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009865274] [2020-07-19 23:12:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:12:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:12:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-19 23:13:14,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009865274] [2020-07-19 23:13:14,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422109317] [2020-07-19 23:13:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@67e4083b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:13:14,734 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@67e4083b issued 2 check-sat command(s) [2020-07-19 23:13:14,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:13:14,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 166 conjunts are in the unsatisfiable core [2020-07-19 23:13:14,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:13:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-19 23:13:15,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:13:15,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 88 [2020-07-19 23:13:15,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883483850] [2020-07-19 23:13:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-07-19 23:13:15,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:13:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-07-19 23:13:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3577, Invalid=4079, Unknown=0, NotChecked=0, Total=7656 [2020-07-19 23:13:15,164 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 88 states. [2020-07-19 23:13:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:13:19,070 INFO L93 Difference]: Finished difference Result 278 states and 288 transitions. [2020-07-19 23:13:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-19 23:13:19,071 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 580 [2020-07-19 23:13:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:13:19,073 INFO L225 Difference]: With dead ends: 278 [2020-07-19 23:13:19,073 INFO L226 Difference]: Without dead ends: 274 [2020-07-19 23:13:19,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6805 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=10798, Invalid=18272, Unknown=0, NotChecked=0, Total=29070 [2020-07-19 23:13:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-19 23:13:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2020-07-19 23:13:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-19 23:13:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 280 transitions. [2020-07-19 23:13:19,084 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 280 transitions. Word has length 580 [2020-07-19 23:13:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:13:19,085 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 280 transitions. [2020-07-19 23:13:19,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-07-19 23:13:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 280 transitions. [2020-07-19 23:13:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-07-19 23:13:19,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:13:19,088 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:13:19,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:13:19,289 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:13:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:13:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2092663267, now seen corresponding path program 82 times [2020-07-19 23:13:19,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:13:19,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825406504] [2020-07-19 23:13:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:13:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-19 23:13:41,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825406504] [2020-07-19 23:13:41,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021874070] [2020-07-19 23:13:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10795976 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:13:41,270 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10795976 issued 2 check-sat command(s) [2020-07-19 23:13:41,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:13:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 168 conjunts are in the unsatisfiable core [2020-07-19 23:13:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:13:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-19 23:13:41,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:13:41,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2020-07-19 23:13:41,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316414389] [2020-07-19 23:13:41,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-19 23:13:41,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:13:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-19 23:13:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3662, Invalid=4170, Unknown=0, NotChecked=0, Total=7832 [2020-07-19 23:13:41,720 INFO L87 Difference]: Start difference. First operand 272 states and 280 transitions. Second operand 89 states. [2020-07-19 23:13:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:13:45,622 INFO L93 Difference]: Finished difference Result 281 states and 291 transitions. [2020-07-19 23:13:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-19 23:13:45,623 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 587 [2020-07-19 23:13:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:13:45,626 INFO L225 Difference]: With dead ends: 281 [2020-07-19 23:13:45,626 INFO L226 Difference]: Without dead ends: 277 [2020-07-19 23:13:45,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=11054, Invalid=18702, Unknown=0, NotChecked=0, Total=29756 [2020-07-19 23:13:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-19 23:13:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-19 23:13:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-19 23:13:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 283 transitions. [2020-07-19 23:13:45,636 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 283 transitions. Word has length 587 [2020-07-19 23:13:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:13:45,637 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 283 transitions. [2020-07-19 23:13:45,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-19 23:13:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 283 transitions. [2020-07-19 23:13:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-07-19 23:13:45,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:13:45,642 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:13:45,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:13:45,843 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:13:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:13:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1154425562, now seen corresponding path program 83 times [2020-07-19 23:13:45,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:13:45,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805700495] [2020-07-19 23:13:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:13:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:13:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-19 23:14:08,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805700495] [2020-07-19 23:14:08,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136476517] [2020-07-19 23:14:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46de2544 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:14:08,566 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46de2544 issued 2 check-sat command(s) [2020-07-19 23:14:08,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:14:08,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 170 conjunts are in the unsatisfiable core [2020-07-19 23:14:08,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:14:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-19 23:14:09,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:14:09,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 90 [2020-07-19 23:14:09,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749699438] [2020-07-19 23:14:09,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-07-19 23:14:09,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:14:09,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-07-19 23:14:09,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3748, Invalid=4262, Unknown=0, NotChecked=0, Total=8010 [2020-07-19 23:14:09,027 INFO L87 Difference]: Start difference. First operand 275 states and 283 transitions. Second operand 90 states. [2020-07-19 23:14:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:14:13,355 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2020-07-19 23:14:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-07-19 23:14:13,357 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 594 [2020-07-19 23:14:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:14:13,359 INFO L225 Difference]: With dead ends: 284 [2020-07-19 23:14:13,359 INFO L226 Difference]: Without dead ends: 280 [2020-07-19 23:14:13,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=11313, Invalid=19137, Unknown=0, NotChecked=0, Total=30450 [2020-07-19 23:14:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-19 23:14:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2020-07-19 23:14:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-19 23:14:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 286 transitions. [2020-07-19 23:14:13,375 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 286 transitions. Word has length 594 [2020-07-19 23:14:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:14:13,376 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 286 transitions. [2020-07-19 23:14:13,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-07-19 23:14:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 286 transitions. [2020-07-19 23:14:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-07-19 23:14:13,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:14:13,383 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:14:13,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:14:13,597 INFO L427 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:14:13,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:14:13,598 INFO L82 PathProgramCache]: Analyzing trace with hash 987354617, now seen corresponding path program 84 times [2020-07-19 23:14:13,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:14:13,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600845814] [2020-07-19 23:14:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:14:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-19 23:14:36,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600845814] [2020-07-19 23:14:36,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888338682] [2020-07-19 23:14:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3762c44a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:14:36,934 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3762c44a issued 2 check-sat command(s) [2020-07-19 23:14:36,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:14:36,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 172 conjunts are in the unsatisfiable core [2020-07-19 23:14:36,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:14:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-19 23:14:37,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:14:37,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2020-07-19 23:14:37,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614284679] [2020-07-19 23:14:37,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-19 23:14:37,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:14:37,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-19 23:14:37,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3835, Invalid=4355, Unknown=0, NotChecked=0, Total=8190 [2020-07-19 23:14:37,396 INFO L87 Difference]: Start difference. First operand 278 states and 286 transitions. Second operand 91 states. [2020-07-19 23:14:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:14:41,879 INFO L93 Difference]: Finished difference Result 287 states and 297 transitions. [2020-07-19 23:14:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-19 23:14:41,880 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 601 [2020-07-19 23:14:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:14:41,882 INFO L225 Difference]: With dead ends: 287 [2020-07-19 23:14:41,882 INFO L226 Difference]: Without dead ends: 283 [2020-07-19 23:14:41,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=11575, Invalid=19577, Unknown=0, NotChecked=0, Total=31152 [2020-07-19 23:14:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-07-19 23:14:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-07-19 23:14:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-19 23:14:41,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 289 transitions. [2020-07-19 23:14:41,894 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 289 transitions. Word has length 601 [2020-07-19 23:14:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:14:41,894 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 289 transitions. [2020-07-19 23:14:41,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-19 23:14:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 289 transitions. [2020-07-19 23:14:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-07-19 23:14:41,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:14:41,898 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:14:42,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-07-19 23:14:42,099 INFO L427 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:14:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:14:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1293641872, now seen corresponding path program 85 times [2020-07-19 23:14:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:14:42,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575017781] [2020-07-19 23:14:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:14:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:14:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-19 23:15:05,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575017781] [2020-07-19 23:15:05,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570562325] [2020-07-19 23:15:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ef33fd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:15:05,896 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ef33fd issued 2 check-sat command(s) [2020-07-19 23:15:05,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:15:05,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 174 conjunts are in the unsatisfiable core [2020-07-19 23:15:05,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:15:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-19 23:15:06,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:15:06,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 92 [2020-07-19 23:15:06,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802138747] [2020-07-19 23:15:06,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-19 23:15:06,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:15:06,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-19 23:15:06,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3923, Invalid=4449, Unknown=0, NotChecked=0, Total=8372 [2020-07-19 23:15:06,354 INFO L87 Difference]: Start difference. First operand 281 states and 289 transitions. Second operand 92 states. [2020-07-19 23:15:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:15:10,759 INFO L93 Difference]: Finished difference Result 290 states and 300 transitions. [2020-07-19 23:15:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-19 23:15:10,760 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 608 [2020-07-19 23:15:10,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:15:10,762 INFO L225 Difference]: With dead ends: 290 [2020-07-19 23:15:10,763 INFO L226 Difference]: Without dead ends: 286 [2020-07-19 23:15:10,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=11840, Invalid=20022, Unknown=0, NotChecked=0, Total=31862 [2020-07-19 23:15:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-19 23:15:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-19 23:15:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-19 23:15:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 292 transitions. [2020-07-19 23:15:10,771 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 292 transitions. Word has length 608 [2020-07-19 23:15:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:15:10,772 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 292 transitions. [2020-07-19 23:15:10,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-07-19 23:15:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 292 transitions. [2020-07-19 23:15:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-07-19 23:15:10,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:15:10,775 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:15:10,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:15:10,976 INFO L427 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:15:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:15:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash 982684431, now seen corresponding path program 86 times [2020-07-19 23:15:10,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:15:10,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625647065] [2020-07-19 23:15:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@9b68ee6 [2020-07-19 23:15:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:15:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat