/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:45,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:45,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:45,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 16:57:45,911 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 [2020-08-22 16:57:45,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:45,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:45,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:45,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:45,976 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:45,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:45,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:45,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:45,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:45,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:45,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:45,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:45,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:45,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:45,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:45,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:45,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:45,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:45,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:45,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:45,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:45,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:45,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:45,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:45,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:45,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:45,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:45,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:45,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:45,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:46,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:46,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:46,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:46,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:46,328 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:46,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-08-22 16:57:46,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029891d47/a5bdae24ae8e434db44e4358e516b124/FLAG6a1776e22 [2020-08-22 16:57:46,880 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:46,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-08-22 16:57:46,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029891d47/a5bdae24ae8e434db44e4358e516b124/FLAG6a1776e22 [2020-08-22 16:57:47,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/029891d47/a5bdae24ae8e434db44e4358e516b124 [2020-08-22 16:57:47,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:47,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:47,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:47,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:47,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:47,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524a1a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47, skipping insertion in model container [2020-08-22 16:57:47,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:47,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:47,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:47,532 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:47,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:47,582 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:47,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47 WrapperNode [2020-08-22 16:57:47,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:47,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:47,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:47,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:47,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (1/1) ... [2020-08-22 16:57:47,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:47,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:47,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:47,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:47,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (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 [2020-08-22 16:57:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:57:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:47,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:47,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:47,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:48,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:48,039 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:57:48,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:48 BoogieIcfgContainer [2020-08-22 16:57:48,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:48,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:48,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:48,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:48,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:47" (1/3) ... [2020-08-22 16:57:48,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa9e665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:48, skipping insertion in model container [2020-08-22 16:57:48,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:47" (2/3) ... [2020-08-22 16:57:48,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa9e665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:48, skipping insertion in model container [2020-08-22 16:57:48,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:48" (3/3) ... [2020-08-22 16:57:48,076 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-08-22 16:57:48,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:48,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:48,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:48,157 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:48,157 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:48,157 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:48,158 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:48,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:48,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:48,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:48,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-08-22 16:57:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 16:57:48,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:48,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:48,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:48,197 INFO L82 PathProgramCache]: Analyzing trace with hash 317368997, now seen corresponding path program 1 times [2020-08-22 16:57:48,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:48,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155323332] [2020-08-22 16:57:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:48,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155323332] [2020-08-22 16:57:48,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:48,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:57:48,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566748757] [2020-08-22 16:57:48,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:57:48,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:48,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:57:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:57:48,369 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-08-22 16:57:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:48,398 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2020-08-22 16:57:48,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:57:48,400 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-08-22 16:57:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:48,411 INFO L225 Difference]: With dead ends: 47 [2020-08-22 16:57:48,412 INFO L226 Difference]: Without dead ends: 22 [2020-08-22 16:57:48,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:57:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-22 16:57:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-22 16:57:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 16:57:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-08-22 16:57:48,464 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-08-22 16:57:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:48,465 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-08-22 16:57:48,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:57:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-08-22 16:57:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:57:48,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:48,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:48,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:48,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1632722591, now seen corresponding path program 1 times [2020-08-22 16:57:48,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:48,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879524999] [2020-08-22 16:57:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:48,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879524999] [2020-08-22 16:57:48,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:48,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:57:48,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979127983] [2020-08-22 16:57:48,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:57:48,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:48,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:57:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:57:48,621 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-08-22 16:57:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:48,686 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-22 16:57:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:57:48,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-22 16:57:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:48,689 INFO L225 Difference]: With dead ends: 31 [2020-08-22 16:57:48,689 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:57:48,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:48,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:57:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-22 16:57:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:57:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-22 16:57:48,700 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-08-22 16:57:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:48,700 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-22 16:57:48,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:57:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-22 16:57:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:57:48,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:48,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:48,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:48,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1401298672, now seen corresponding path program 1 times [2020-08-22 16:57:48,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:48,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272968044] [2020-08-22 16:57:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 16:57:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:48,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272968044] [2020-08-22 16:57:48,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:48,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:57:48,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636310527] [2020-08-22 16:57:48,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:57:48,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:48,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:57:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:57:48,837 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-22 16:57:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:48,939 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-08-22 16:57:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:57:48,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-22 16:57:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:48,944 INFO L225 Difference]: With dead ends: 49 [2020-08-22 16:57:48,945 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 16:57:48,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:57:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 16:57:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-08-22 16:57:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:57:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 16:57:48,960 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-22 16:57:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:48,961 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 16:57:48,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:57:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 16:57:48,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:57:48,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:48,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:48,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:57:48,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:48,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1107622837, now seen corresponding path program 1 times [2020-08-22 16:57:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:48,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329445257] [2020-08-22 16:57:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 16:57:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:49,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329445257] [2020-08-22 16:57:49,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802632419] [2020-08-22 16:57:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-08-22 16:57:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:57:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:49,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:49,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-08-22 16:57:49,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925285747] [2020-08-22 16:57:49,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:57:49,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:57:49,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:49,238 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-08-22 16:57:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:49,358 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-08-22 16:57:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:57:49,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-22 16:57:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:49,360 INFO L225 Difference]: With dead ends: 55 [2020-08-22 16:57:49,360 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 16:57:49,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:49,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 16:57:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-08-22 16:57:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:57:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 16:57:49,369 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-08-22 16:57:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:49,370 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 16:57:49,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:57:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 16:57:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:57:49,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:49,371 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:49,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:49,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:49,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1590427366, now seen corresponding path program 2 times [2020-08-22 16:57:49,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:49,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826067352] [2020-08-22 16:57:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 16:57:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:49,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826067352] [2020-08-22 16:57:49,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999290429] [2020-08-22 16:57:49,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:57:49,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:57:49,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:49,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2020-08-22 16:57:49,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:49,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:49,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:49,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-08-22 16:57:49,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864036251] [2020-08-22 16:57:49,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:57:49,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:49,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:57:49,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:57:49,781 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-08-22 16:57:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:49,859 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-08-22 16:57:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:57:49,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-08-22 16:57:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:49,861 INFO L225 Difference]: With dead ends: 47 [2020-08-22 16:57:49,861 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 16:57:49,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 16:57:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-08-22 16:57:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:57:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-08-22 16:57:49,871 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2020-08-22 16:57:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:49,872 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-08-22 16:57:49,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:57:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-08-22 16:57:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:57:49,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:49,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:50,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:50,091 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -30298372, now seen corresponding path program 3 times [2020-08-22 16:57:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:50,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117857247] [2020-08-22 16:57:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 16:57:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 16:57:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:57:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:50,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117857247] [2020-08-22 16:57:50,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992064008] [2020-08-22 16:57:50,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:57:50,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-08-22 16:57:50,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-08-22 16:57:50,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:50,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:50,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-08-22 16:57:50,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229343311] [2020-08-22 16:57:50,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:57:50,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:57:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:57:50,455 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 13 states. [2020-08-22 16:57:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:50,591 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2020-08-22 16:57:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:57:50,591 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-08-22 16:57:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:50,594 INFO L225 Difference]: With dead ends: 83 [2020-08-22 16:57:50,594 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 16:57:50,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 16:57:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 16:57:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-08-22 16:57:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 16:57:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-08-22 16:57:50,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2020-08-22 16:57:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:50,611 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-08-22 16:57:50,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:57:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-08-22 16:57:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 16:57:50,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:50,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:50,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:50,828 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:50,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:50,829 INFO L82 PathProgramCache]: Analyzing trace with hash 130155809, now seen corresponding path program 4 times [2020-08-22 16:57:50,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:50,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861153516] [2020-08-22 16:57:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:57:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 16:57:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 16:57:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:51,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861153516] [2020-08-22 16:57:51,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783445967] [2020-08-22 16:57:51,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:57:51,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:57:51,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:51,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-08-22 16:57:51,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:51,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:51,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2020-08-22 16:57:51,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879602035] [2020-08-22 16:57:51,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:57:51,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:57:51,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:57:51,203 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 14 states. [2020-08-22 16:57:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:51,384 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-08-22 16:57:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:57:51,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-08-22 16:57:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:51,391 INFO L225 Difference]: With dead ends: 87 [2020-08-22 16:57:51,391 INFO L226 Difference]: Without dead ends: 64 [2020-08-22 16:57:51,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:57:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-22 16:57:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-08-22 16:57:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 16:57:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-08-22 16:57:51,411 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 47 [2020-08-22 16:57:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:51,412 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-08-22 16:57:51,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:57:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-08-22 16:57:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 16:57:51,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:51,417 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:51,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:51,618 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash -292198906, now seen corresponding path program 5 times [2020-08-22 16:57:51,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:51,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617968864] [2020-08-22 16:57:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 16:57:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:57:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:57:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:51,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617968864] [2020-08-22 16:57:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530395299] [2020-08-22 16:57:51,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:57:51,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-08-22 16:57:51,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:51,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2020-08-22 16:57:51,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:51,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:57:51,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:51,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-08-22 16:57:51,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105916765] [2020-08-22 16:57:51,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 16:57:51,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 16:57:51,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:57:51,945 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 11 states. [2020-08-22 16:57:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:52,041 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-08-22 16:57:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:57:52,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-08-22 16:57:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:52,042 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:57:52,043 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 16:57:52,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:57:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 16:57:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-22 16:57:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 16:57:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-08-22 16:57:52,052 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2020-08-22 16:57:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:52,053 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-08-22 16:57:52,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 16:57:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-08-22 16:57:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 16:57:52,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:52,054 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:52,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:52,269 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 551795688, now seen corresponding path program 6 times [2020-08-22 16:57:52,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:52,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098040952] [2020-08-22 16:57:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 16:57:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:57:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:57:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:57:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:57:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:52,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098040952] [2020-08-22 16:57:52,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80839303] [2020-08-22 16:57:52,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:57:52,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-08-22 16:57:52,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:52,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:57:52,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:52,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:52,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-08-22 16:57:52,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771688142] [2020-08-22 16:57:52,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:57:52,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:52,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:57:52,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:57:52,697 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 19 states. [2020-08-22 16:57:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:52,893 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2020-08-22 16:57:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:57:52,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-08-22 16:57:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:52,896 INFO L225 Difference]: With dead ends: 115 [2020-08-22 16:57:52,896 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 16:57:52,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-22 16:57:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 16:57:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2020-08-22 16:57:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 16:57:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-08-22 16:57:52,920 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 65 [2020-08-22 16:57:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:52,920 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-08-22 16:57:52,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:57:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-08-22 16:57:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 16:57:52,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:52,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:53,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:53,124 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:53,125 INFO L82 PathProgramCache]: Analyzing trace with hash -150434419, now seen corresponding path program 7 times [2020-08-22 16:57:53,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:53,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812775442] [2020-08-22 16:57:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 16:57:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 16:57:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 16:57:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:57:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:57:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:53,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812775442] [2020-08-22 16:57:53,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154290805] [2020-08-22 16:57:53,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:57:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:53,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:57:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:53,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:53,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-08-22 16:57:53,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189300794] [2020-08-22 16:57:53,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 16:57:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 16:57:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:57:53,528 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 20 states. [2020-08-22 16:57:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:53,791 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2020-08-22 16:57:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:57:53,791 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-08-22 16:57:53,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:53,793 INFO L225 Difference]: With dead ends: 119 [2020-08-22 16:57:53,793 INFO L226 Difference]: Without dead ends: 88 [2020-08-22 16:57:53,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:57:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-22 16:57:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2020-08-22 16:57:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 16:57:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-08-22 16:57:53,815 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 67 [2020-08-22 16:57:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:53,817 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-08-22 16:57:53,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 16:57:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-08-22 16:57:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 16:57:53,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:53,819 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:54,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:57:54,022 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:54,022 INFO L82 PathProgramCache]: Analyzing trace with hash -683701774, now seen corresponding path program 8 times [2020-08-22 16:57:54,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:54,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575450436] [2020-08-22 16:57:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 16:57:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:57:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:57:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:57:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:57:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:54,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575450436] [2020-08-22 16:57:54,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840128182] [2020-08-22 16:57:54,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:57:54,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:57:54,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:54,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2020-08-22 16:57:54,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:54,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-22 16:57:54,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:54,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-08-22 16:57:54,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181004593] [2020-08-22 16:57:54,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:57:54,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:54,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:57:54,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:57:54,263 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 13 states. [2020-08-22 16:57:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:54,365 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-08-22 16:57:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:57:54,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-08-22 16:57:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:54,367 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:57:54,367 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 16:57:54,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:57:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 16:57:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-22 16:57:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:57:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-08-22 16:57:54,376 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 69 [2020-08-22 16:57:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:54,377 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-08-22 16:57:54,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:57:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-08-22 16:57:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 16:57:54,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:54,379 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:54,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-08-22 16:57:54,594 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:54,594 INFO L82 PathProgramCache]: Analyzing trace with hash 192972756, now seen corresponding path program 9 times [2020-08-22 16:57:54,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:54,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360912343] [2020-08-22 16:57:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 16:57:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:57:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:57:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:57:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:57:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:57:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:57:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 112 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:54,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360912343] [2020-08-22 16:57:54,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144692980] [2020-08-22 16:57:54,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:57:54,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-08-22 16:57:54,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:54,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2020-08-22 16:57:54,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 112 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:55,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:55,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2020-08-22 16:57:55,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171741726] [2020-08-22 16:57:55,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 16:57:55,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:55,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 16:57:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-08-22 16:57:55,152 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 25 states. [2020-08-22 16:57:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:55,421 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-08-22 16:57:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:57:55,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 85 [2020-08-22 16:57:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:55,423 INFO L225 Difference]: With dead ends: 147 [2020-08-22 16:57:55,423 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 16:57:55,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2020-08-22 16:57:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 16:57:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-08-22 16:57:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 16:57:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-08-22 16:57:55,433 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 85 [2020-08-22 16:57:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:55,433 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-08-22 16:57:55,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 16:57:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-08-22 16:57:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 16:57:55,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:55,435 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:55,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:55,651 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1722356985, now seen corresponding path program 10 times [2020-08-22 16:57:55,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:55,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541848957] [2020-08-22 16:57:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 16:57:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 16:57:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 16:57:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:57:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 16:57:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:57:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:57:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:55,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541848957] [2020-08-22 16:57:55,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041782949] [2020-08-22 16:57:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:57:55,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:57:55,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:55,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2020-08-22 16:57:55,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:56,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:56,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2020-08-22 16:57:56,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698199365] [2020-08-22 16:57:56,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-22 16:57:56,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:56,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-22 16:57:56,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:57:56,247 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 26 states. [2020-08-22 16:57:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:56,551 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2020-08-22 16:57:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 16:57:56,551 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2020-08-22 16:57:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:56,555 INFO L225 Difference]: With dead ends: 151 [2020-08-22 16:57:56,555 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 16:57:56,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 16:57:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 16:57:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-08-22 16:57:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 16:57:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-08-22 16:57:56,573 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 87 [2020-08-22 16:57:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:56,573 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-08-22 16:57:56,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-22 16:57:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-08-22 16:57:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 16:57:56,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:56,577 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:56,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:56,793 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1713181474, now seen corresponding path program 11 times [2020-08-22 16:57:56,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:56,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820456380] [2020-08-22 16:57:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:57:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:57:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:57:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:57:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:57:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:57:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:57:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:56,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820456380] [2020-08-22 16:57:56,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811306516] [2020-08-22 16:57:56,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:57:57,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-08-22 16:57:57,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:57,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2020-08-22 16:57:57,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:57,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-08-22 16:57:57,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-08-22 16:57:57,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649093618] [2020-08-22 16:57:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 16:57:57,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:57,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 16:57:57,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:57:57,081 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 15 states. [2020-08-22 16:57:57,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:57,234 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-22 16:57:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:57:57,236 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-08-22 16:57:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:57,238 INFO L225 Difference]: With dead ends: 95 [2020-08-22 16:57:57,238 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 16:57:57,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 16:57:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 16:57:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-08-22 16:57:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-08-22 16:57:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-08-22 16:57:57,251 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 89 [2020-08-22 16:57:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:57,254 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-08-22 16:57:57,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 16:57:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-08-22 16:57:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-22 16:57:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:57,257 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:57,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-08-22 16:57:57,471 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:57,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1950838080, now seen corresponding path program 12 times [2020-08-22 16:57:57,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:57,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928293568] [2020-08-22 16:57:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:57:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:57:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:57:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:57:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:57:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:57:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:57:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:57:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:57:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:57:57,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928293568] [2020-08-22 16:57:57,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13944626] [2020-08-22 16:57:57,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:57:57,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-08-22 16:57:57,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:57,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 21 conjunts are in the unsatisfiable core [2020-08-22 16:57:57,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:57:58,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:58,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2020-08-22 16:57:58,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476564629] [2020-08-22 16:57:58,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 16:57:58,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:58,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 16:57:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:57:58,186 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 31 states. [2020-08-22 16:57:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:58,568 INFO L93 Difference]: Finished difference Result 179 states and 213 transitions. [2020-08-22 16:57:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 16:57:58,569 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 105 [2020-08-22 16:57:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:58,570 INFO L225 Difference]: With dead ends: 179 [2020-08-22 16:57:58,570 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 16:57:58,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1131, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 16:57:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 16:57:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2020-08-22 16:57:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 16:57:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-08-22 16:57:58,586 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 105 [2020-08-22 16:57:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:58,587 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-08-22 16:57:58,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 16:57:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-08-22 16:57:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 16:57:58,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:58,589 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:57:58,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-08-22 16:57:58,802 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:58,803 INFO L82 PathProgramCache]: Analyzing trace with hash -734782619, now seen corresponding path program 13 times [2020-08-22 16:57:58,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:58,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152682826] [2020-08-22 16:57:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 16:57:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 16:57:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:57:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:57:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 16:57:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:57:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:57:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:57:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:57:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:57:59,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152682826] [2020-08-22 16:57:59,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132115805] [2020-08-22 16:57:59,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:57:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:59,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjunts are in the unsatisfiable core [2020-08-22 16:57:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:57:59,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:59,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2020-08-22 16:57:59,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193072726] [2020-08-22 16:57:59,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 16:57:59,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 16:57:59,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-08-22 16:57:59,536 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 32 states. [2020-08-22 16:58:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:00,015 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2020-08-22 16:58:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 16:58:00,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2020-08-22 16:58:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:00,017 INFO L225 Difference]: With dead ends: 183 [2020-08-22 16:58:00,017 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 16:58:00,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=1241, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 16:58:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 16:58:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-08-22 16:58:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 16:58:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-08-22 16:58:00,026 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 107 [2020-08-22 16:58:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:00,026 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-08-22 16:58:00,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 16:58:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-08-22 16:58:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 16:58:00,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:00,028 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:00,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-08-22 16:58:00,243 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:00,243 INFO L82 PathProgramCache]: Analyzing trace with hash -336589110, now seen corresponding path program 14 times [2020-08-22 16:58:00,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:00,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457705399] [2020-08-22 16:58:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:58:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:58:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:58:00,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457705399] [2020-08-22 16:58:00,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048369916] [2020-08-22 16:58:00,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:00,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:58:00,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:00,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2020-08-22 16:58:00,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:00,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-22 16:58:00,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:00,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-08-22 16:58:00,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329836026] [2020-08-22 16:58:00,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 16:58:00,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:00,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 16:58:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-08-22 16:58:00,572 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 17 states. [2020-08-22 16:58:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:00,724 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-08-22 16:58:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:58:00,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2020-08-22 16:58:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:00,726 INFO L225 Difference]: With dead ends: 111 [2020-08-22 16:58:00,727 INFO L226 Difference]: Without dead ends: 109 [2020-08-22 16:58:00,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:58:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-22 16:58:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-08-22 16:58:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 16:58:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-08-22 16:58:00,737 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 109 [2020-08-22 16:58:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:00,738 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-08-22 16:58:00,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 16:58:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-08-22 16:58:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-08-22 16:58:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:00,741 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:00,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:00,954 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:00,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1711037612, now seen corresponding path program 15 times [2020-08-22 16:58:00,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:00,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808061157] [2020-08-22 16:58:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:58:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:58:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 264 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:01,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808061157] [2020-08-22 16:58:01,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309056418] [2020-08-22 16:58:01,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:58:01,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-08-22 16:58:01,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2020-08-22 16:58:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 264 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:01,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:01,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2020-08-22 16:58:01,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134035583] [2020-08-22 16:58:01,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-22 16:58:01,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:01,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-22 16:58:01,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:58:01,881 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 37 states. [2020-08-22 16:58:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:02,440 INFO L93 Difference]: Finished difference Result 211 states and 252 transitions. [2020-08-22 16:58:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 16:58:02,441 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 125 [2020-08-22 16:58:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:02,442 INFO L225 Difference]: With dead ends: 211 [2020-08-22 16:58:02,443 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 16:58:02,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=611, Invalid=1645, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 16:58:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 16:58:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-08-22 16:58:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 16:58:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-08-22 16:58:02,453 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 125 [2020-08-22 16:58:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:02,453 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-08-22 16:58:02,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-22 16:58:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-08-22 16:58:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-22 16:58:02,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:02,456 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:02,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-08-22 16:58:02,670 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:02,670 INFO L82 PathProgramCache]: Analyzing trace with hash 66724049, now seen corresponding path program 16 times [2020-08-22 16:58:02,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:02,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423629444] [2020-08-22 16:58:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 16:58:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 16:58:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:58:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 16:58:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:58:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:58:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:58:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:58:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:58:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:58:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:58:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:03,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423629444] [2020-08-22 16:58:03,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76780110] [2020-08-22 16:58:03,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:58:03,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:58:03,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:03,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 26 conjunts are in the unsatisfiable core [2020-08-22 16:58:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:03,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:03,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2020-08-22 16:58:03,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029172549] [2020-08-22 16:58:03,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-08-22 16:58:03,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:03,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-08-22 16:58:03,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 16:58:03,777 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 38 states. [2020-08-22 16:58:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:04,402 INFO L93 Difference]: Finished difference Result 215 states and 259 transitions. [2020-08-22 16:58:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 16:58:04,402 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 127 [2020-08-22 16:58:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:04,405 INFO L225 Difference]: With dead ends: 215 [2020-08-22 16:58:04,405 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 16:58:04,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 16:58:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 16:58:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2020-08-22 16:58:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 16:58:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-08-22 16:58:04,414 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 127 [2020-08-22 16:58:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:04,415 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-08-22 16:58:04,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-08-22 16:58:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-08-22 16:58:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 16:58:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:04,416 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:04,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:04,630 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash 429354934, now seen corresponding path program 17 times [2020-08-22 16:58:04,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:04,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788727538] [2020-08-22 16:58:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:58:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:58:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:04,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788727538] [2020-08-22 16:58:04,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963733452] [2020-08-22 16:58:04,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:04,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-08-22 16:58:04,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 27 conjunts are in the unsatisfiable core [2020-08-22 16:58:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:05,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-22 16:58:05,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:05,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-08-22 16:58:05,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975652109] [2020-08-22 16:58:05,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:58:05,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:05,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:58:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:58:05,070 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 19 states. [2020-08-22 16:58:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:05,282 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2020-08-22 16:58:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 16:58:05,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 129 [2020-08-22 16:58:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:05,285 INFO L225 Difference]: With dead ends: 127 [2020-08-22 16:58:05,285 INFO L226 Difference]: Without dead ends: 125 [2020-08-22 16:58:05,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:58:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-08-22 16:58:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-08-22 16:58:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 16:58:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2020-08-22 16:58:05,296 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 129 [2020-08-22 16:58:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:05,297 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2020-08-22 16:58:05,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:58:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2020-08-22 16:58:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 16:58:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:05,299 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:05,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:05,512 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:05,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1971086744, now seen corresponding path program 18 times [2020-08-22 16:58:05,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:05,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877486632] [2020-08-22 16:58:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 16:58:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:58:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:06,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877486632] [2020-08-22 16:58:06,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620811851] [2020-08-22 16:58:06,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:58:06,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-08-22 16:58:06,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:06,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 29 conjunts are in the unsatisfiable core [2020-08-22 16:58:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:06,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:06,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 43 [2020-08-22 16:58:06,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245699721] [2020-08-22 16:58:06,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 16:58:06,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 16:58:06,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1358, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 16:58:06,703 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 43 states. [2020-08-22 16:58:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:07,436 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2020-08-22 16:58:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 16:58:07,437 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 145 [2020-08-22 16:58:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:07,438 INFO L225 Difference]: With dead ends: 243 [2020-08-22 16:58:07,439 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 16:58:07,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=825, Invalid=2255, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 16:58:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 16:58:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2020-08-22 16:58:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 16:58:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-08-22 16:58:07,456 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 145 [2020-08-22 16:58:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:07,457 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-08-22 16:58:07,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 16:58:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-08-22 16:58:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 16:58:07,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:07,458 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:07,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-08-22 16:58:07,671 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash 554411325, now seen corresponding path program 19 times [2020-08-22 16:58:07,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:07,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252332513] [2020-08-22 16:58:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 16:58:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:58:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:58:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 16:58:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:58:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:58:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:58:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:58:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 16:58:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 16:58:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 16:58:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 16:58:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 16:58:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252332513] [2020-08-22 16:58:08,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2315740] [2020-08-22 16:58:08,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:58:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:08,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 30 conjunts are in the unsatisfiable core [2020-08-22 16:58:08,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:08,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:08,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2020-08-22 16:58:08,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874074050] [2020-08-22 16:58:08,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-08-22 16:58:08,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-08-22 16:58:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 16:58:08,829 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 44 states. [2020-08-22 16:58:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:09,539 INFO L93 Difference]: Finished difference Result 247 states and 298 transitions. [2020-08-22 16:58:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:58:09,539 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 147 [2020-08-22 16:58:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:09,542 INFO L225 Difference]: With dead ends: 247 [2020-08-22 16:58:09,542 INFO L226 Difference]: Without dead ends: 184 [2020-08-22 16:58:09,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 16:58:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-08-22 16:58:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 128. [2020-08-22 16:58:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-22 16:58:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2020-08-22 16:58:09,552 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 147 [2020-08-22 16:58:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:09,553 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2020-08-22 16:58:09,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-08-22 16:58:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2020-08-22 16:58:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 16:58:09,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:09,554 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:09,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:09,770 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 633966498, now seen corresponding path program 20 times [2020-08-22 16:58:09,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:09,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52792771] [2020-08-22 16:58:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:58:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:10,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52792771] [2020-08-22 16:58:10,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666022613] [2020-08-22 16:58:10,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:10,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:58:10,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 31 conjunts are in the unsatisfiable core [2020-08-22 16:58:10,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:10,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-08-22 16:58:10,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:10,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-08-22 16:58:10,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391589268] [2020-08-22 16:58:10,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 16:58:10,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 16:58:10,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2020-08-22 16:58:10,302 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand 21 states. [2020-08-22 16:58:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:10,509 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-08-22 16:58:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 16:58:10,509 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 149 [2020-08-22 16:58:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:10,511 INFO L225 Difference]: With dead ends: 143 [2020-08-22 16:58:10,511 INFO L226 Difference]: Without dead ends: 141 [2020-08-22 16:58:10,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-08-22 16:58:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-22 16:58:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-08-22 16:58:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 16:58:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2020-08-22 16:58:10,528 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 149 [2020-08-22 16:58:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:10,529 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2020-08-22 16:58:10,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 16:58:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2020-08-22 16:58:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-08-22 16:58:10,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:10,531 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:10,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-08-22 16:58:10,744 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:10,745 INFO L82 PathProgramCache]: Analyzing trace with hash -869716604, now seen corresponding path program 21 times [2020-08-22 16:58:10,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:10,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636783569] [2020-08-22 16:58:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 16:58:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:58:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:58:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 480 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:11,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636783569] [2020-08-22 16:58:11,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179517826] [2020-08-22 16:58:11,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:58:11,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-08-22 16:58:11,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:11,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 33 conjunts are in the unsatisfiable core [2020-08-22 16:58:11,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 480 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:12,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:12,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 49 [2020-08-22 16:58:12,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796030080] [2020-08-22 16:58:12,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-08-22 16:58:12,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:12,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-08-22 16:58:12,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=1776, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 16:58:12,340 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 49 states. [2020-08-22 16:58:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:13,134 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2020-08-22 16:58:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 16:58:13,135 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 165 [2020-08-22 16:58:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:13,137 INFO L225 Difference]: With dead ends: 275 [2020-08-22 16:58:13,138 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 16:58:13,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1071, Invalid=2961, Unknown=0, NotChecked=0, Total=4032 [2020-08-22 16:58:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 16:58:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2020-08-22 16:58:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-22 16:58:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-08-22 16:58:13,149 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 165 [2020-08-22 16:58:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:13,149 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-08-22 16:58:13,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-08-22 16:58:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-08-22 16:58:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 16:58:13,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:13,151 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:13,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-08-22 16:58:13,366 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:13,366 INFO L82 PathProgramCache]: Analyzing trace with hash -583456599, now seen corresponding path program 22 times [2020-08-22 16:58:13,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:13,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376336856] [2020-08-22 16:58:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 16:58:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:58:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 16:58:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:58:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:58:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:58:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:58:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:58:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:58:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:58:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 16:58:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 16:58:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 16:58:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 16:58:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 16:58:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:14,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376336856] [2020-08-22 16:58:14,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472492631] [2020-08-22 16:58:14,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:58:14,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:58:14,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:14,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 34 conjunts are in the unsatisfiable core [2020-08-22 16:58:14,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:14,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:14,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 50 [2020-08-22 16:58:14,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832227184] [2020-08-22 16:58:14,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-08-22 16:58:14,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-08-22 16:58:14,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 16:58:14,818 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 50 states. [2020-08-22 16:58:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:15,686 INFO L93 Difference]: Finished difference Result 279 states and 337 transitions. [2020-08-22 16:58:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 16:58:15,686 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 167 [2020-08-22 16:58:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:15,688 INFO L225 Difference]: With dead ends: 279 [2020-08-22 16:58:15,688 INFO L226 Difference]: Without dead ends: 208 [2020-08-22 16:58:15,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2020-08-22 16:58:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-08-22 16:58:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 144. [2020-08-22 16:58:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 16:58:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-08-22 16:58:15,700 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 167 [2020-08-22 16:58:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:15,700 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-08-22 16:58:15,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-08-22 16:58:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-08-22 16:58:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-08-22 16:58:15,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:15,702 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:15,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:15,916 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash -365498738, now seen corresponding path program 23 times [2020-08-22 16:58:15,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:15,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680927002] [2020-08-22 16:58:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:58:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:16,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680927002] [2020-08-22 16:58:16,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485715288] [2020-08-22 16:58:16,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:16,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-08-22 16:58:16,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:16,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 35 conjunts are in the unsatisfiable core [2020-08-22 16:58:16,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:16,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-08-22 16:58:16,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:16,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-08-22 16:58:16,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995716413] [2020-08-22 16:58:16,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 16:58:16,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 16:58:16,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-08-22 16:58:16,461 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 23 states. [2020-08-22 16:58:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:16,726 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-08-22 16:58:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 16:58:16,727 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 169 [2020-08-22 16:58:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:16,729 INFO L225 Difference]: With dead ends: 159 [2020-08-22 16:58:16,729 INFO L226 Difference]: Without dead ends: 157 [2020-08-22 16:58:16,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2020-08-22 16:58:16,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-22 16:58:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-08-22 16:58:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-22 16:58:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-08-22 16:58:16,749 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 169 [2020-08-22 16:58:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:16,750 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-08-22 16:58:16,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 16:58:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-08-22 16:58:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-22 16:58:16,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:16,752 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:16,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-08-22 16:58:16,966 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:16,967 INFO L82 PathProgramCache]: Analyzing trace with hash -760007568, now seen corresponding path program 24 times [2020-08-22 16:58:16,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:16,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110946713] [2020-08-22 16:58:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 16:58:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:58:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:58:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:17,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110946713] [2020-08-22 16:58:17,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3718922] [2020-08-22 16:58:17,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:58:17,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-08-22 16:58:17,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:17,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 37 conjunts are in the unsatisfiable core [2020-08-22 16:58:17,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:18,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:18,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 55 [2020-08-22 16:58:18,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905302370] [2020-08-22 16:58:18,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 16:58:18,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:18,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 16:58:18,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=2250, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 16:58:18,707 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 55 states. [2020-08-22 16:58:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:19,702 INFO L93 Difference]: Finished difference Result 307 states and 369 transitions. [2020-08-22 16:58:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 16:58:19,703 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 185 [2020-08-22 16:58:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:19,706 INFO L225 Difference]: With dead ends: 307 [2020-08-22 16:58:19,706 INFO L226 Difference]: Without dead ends: 226 [2020-08-22 16:58:19,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1349, Invalid=3763, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 16:58:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-08-22 16:58:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2020-08-22 16:58:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 16:58:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-08-22 16:58:19,723 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 185 [2020-08-22 16:58:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:19,724 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-08-22 16:58:19,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 16:58:19,724 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-08-22 16:58:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-08-22 16:58:19,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:19,726 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:19,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:19,927 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:19,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1861014763, now seen corresponding path program 25 times [2020-08-22 16:58:19,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:19,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627302691] [2020-08-22 16:58:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:58:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:58:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 16:58:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:58:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:58:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:58:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:58:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 16:58:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 16:58:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 16:58:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 16:58:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 16:58:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 16:58:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 16:58:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:58:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 16:58:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 16:58:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:20,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627302691] [2020-08-22 16:58:20,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870783435] [2020-08-22 16:58:20,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:58:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:20,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 38 conjunts are in the unsatisfiable core [2020-08-22 16:58:20,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:21,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:21,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 56 [2020-08-22 16:58:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511789453] [2020-08-22 16:58:21,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-08-22 16:58:21,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:21,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-08-22 16:58:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2341, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 16:58:21,677 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 56 states. [2020-08-22 16:58:22,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:22,715 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-08-22 16:58:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 16:58:22,715 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 187 [2020-08-22 16:58:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:22,717 INFO L225 Difference]: With dead ends: 311 [2020-08-22 16:58:22,717 INFO L226 Difference]: Without dead ends: 232 [2020-08-22 16:58:22,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1441, Invalid=3961, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 16:58:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-22 16:58:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2020-08-22 16:58:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 16:58:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-08-22 16:58:22,731 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 187 [2020-08-22 16:58:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:22,731 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-08-22 16:58:22,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-08-22 16:58:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-08-22 16:58:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 16:58:22,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:22,733 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:22,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-08-22 16:58:22,946 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 927992954, now seen corresponding path program 26 times [2020-08-22 16:58:22,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:22,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495499389] [2020-08-22 16:58:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:58:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:58:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:58:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:58:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:58:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:23,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495499389] [2020-08-22 16:58:23,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159486088] [2020-08-22 16:58:23,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:23,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:58:23,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:23,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 39 conjunts are in the unsatisfiable core [2020-08-22 16:58:23,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:23,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-08-22 16:58:23,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:23,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-08-22 16:58:23,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729693647] [2020-08-22 16:58:23,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 16:58:23,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:23,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 16:58:23,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=380, Unknown=0, NotChecked=0, Total=600 [2020-08-22 16:58:23,656 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 25 states. [2020-08-22 16:58:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:23,948 INFO L93 Difference]: Finished difference Result 175 states and 187 transitions. [2020-08-22 16:58:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 16:58:23,949 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 189 [2020-08-22 16:58:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:23,950 INFO L225 Difference]: With dead ends: 175 [2020-08-22 16:58:23,951 INFO L226 Difference]: Without dead ends: 173 [2020-08-22 16:58:23,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:58:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-22 16:58:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-08-22 16:58:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-08-22 16:58:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-08-22 16:58:23,962 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 189 [2020-08-22 16:58:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:23,962 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-08-22 16:58:23,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 16:58:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-08-22 16:58:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 16:58:23,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:23,964 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:24,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-08-22 16:58:24,178 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1753938524, now seen corresponding path program 27 times [2020-08-22 16:58:24,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:24,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765048087] [2020-08-22 16:58:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 16:58:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:58:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:58:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:58:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:58:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:58:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:58:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:58:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 760 proven. 342 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:25,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765048087] [2020-08-22 16:58:25,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302492067] [2020-08-22 16:58:25,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:58:25,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2020-08-22 16:58:25,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:25,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 41 conjunts are in the unsatisfiable core [2020-08-22 16:58:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 760 proven. 342 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:26,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:26,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 61 [2020-08-22 16:58:26,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460787529] [2020-08-22 16:58:26,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-08-22 16:58:26,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:26,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-08-22 16:58:26,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2020-08-22 16:58:26,268 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 61 states. [2020-08-22 16:58:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:27,439 INFO L93 Difference]: Finished difference Result 339 states and 408 transitions. [2020-08-22 16:58:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 16:58:27,440 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 205 [2020-08-22 16:58:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:27,442 INFO L225 Difference]: With dead ends: 339 [2020-08-22 16:58:27,442 INFO L226 Difference]: Without dead ends: 250 [2020-08-22 16:58:27,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1659, Invalid=4661, Unknown=0, NotChecked=0, Total=6320 [2020-08-22 16:58:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-22 16:58:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2020-08-22 16:58:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 16:58:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-08-22 16:58:27,455 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 205 [2020-08-22 16:58:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:27,455 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-08-22 16:58:27,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-08-22 16:58:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-08-22 16:58:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 16:58:27,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:27,457 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:27,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:27,670 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1542073473, now seen corresponding path program 28 times [2020-08-22 16:58:27,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:27,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334023771] [2020-08-22 16:58:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 16:58:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 16:58:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:58:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:58:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:58:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:58:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:58:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:58:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:58:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 16:58:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 16:58:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 16:58:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 16:58:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 16:58:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 16:58:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 16:58:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 16:58:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 16:58:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 16:58:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:28,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334023771] [2020-08-22 16:58:28,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205316948] [2020-08-22 16:58:28,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:58:28,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:58:28,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:28,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjunts are in the unsatisfiable core [2020-08-22 16:58:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:29,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:29,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 62 [2020-08-22 16:58:29,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461902625] [2020-08-22 16:58:29,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-08-22 16:58:29,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:29,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-08-22 16:58:29,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2881, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 16:58:29,788 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 62 states. [2020-08-22 16:58:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:31,007 INFO L93 Difference]: Finished difference Result 343 states and 415 transitions. [2020-08-22 16:58:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 16:58:31,007 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 207 [2020-08-22 16:58:31,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:31,009 INFO L225 Difference]: With dead ends: 343 [2020-08-22 16:58:31,009 INFO L226 Difference]: Without dead ends: 256 [2020-08-22 16:58:31,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1761, Invalid=4881, Unknown=0, NotChecked=0, Total=6642 [2020-08-22 16:58:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-22 16:58:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 176. [2020-08-22 16:58:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 16:58:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-08-22 16:58:31,021 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 207 [2020-08-22 16:58:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:31,021 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-08-22 16:58:31,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-08-22 16:58:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-08-22 16:58:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-22 16:58:31,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:31,023 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:31,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:31,239 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash -196777626, now seen corresponding path program 29 times [2020-08-22 16:58:31,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:31,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889316142] [2020-08-22 16:58:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:58:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:58:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:58:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:58:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:58:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:31,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889316142] [2020-08-22 16:58:31,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345511059] [2020-08-22 16:58:31,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:31,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-08-22 16:58:31,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:31,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 43 conjunts are in the unsatisfiable core [2020-08-22 16:58:31,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:31,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-08-22 16:58:31,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:31,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-08-22 16:58:31,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079590161] [2020-08-22 16:58:31,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-08-22 16:58:31,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:31,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-08-22 16:58:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=439, Unknown=0, NotChecked=0, Total=702 [2020-08-22 16:58:31,919 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 27 states. [2020-08-22 16:58:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:32,181 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-08-22 16:58:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 16:58:32,182 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 209 [2020-08-22 16:58:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:32,183 INFO L225 Difference]: With dead ends: 191 [2020-08-22 16:58:32,184 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 16:58:32,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=487, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:58:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 16:58:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2020-08-22 16:58:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-22 16:58:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2020-08-22 16:58:32,195 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 209 [2020-08-22 16:58:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:32,195 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2020-08-22 16:58:32,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-08-22 16:58:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2020-08-22 16:58:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 16:58:32,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:32,197 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:32,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-08-22 16:58:32,412 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash 65077064, now seen corresponding path program 30 times [2020-08-22 16:58:32,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:32,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107289851] [2020-08-22 16:58:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 16:58:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:58:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:58:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:58:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:58:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:58:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 16:58:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 16:58:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:33,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107289851] [2020-08-22 16:58:33,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806466874] [2020-08-22 16:58:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:58:33,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2020-08-22 16:58:33,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:33,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 45 conjunts are in the unsatisfiable core [2020-08-22 16:58:33,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:34,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:34,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 67 [2020-08-22 16:58:34,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14659014] [2020-08-22 16:58:34,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-08-22 16:58:34,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:34,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-08-22 16:58:34,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=3366, Unknown=0, NotChecked=0, Total=4422 [2020-08-22 16:58:34,999 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand 67 states. [2020-08-22 16:58:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:36,390 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-22 16:58:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 16:58:36,399 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 225 [2020-08-22 16:58:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:36,400 INFO L225 Difference]: With dead ends: 371 [2020-08-22 16:58:36,401 INFO L226 Difference]: Without dead ends: 274 [2020-08-22 16:58:36,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2001, Invalid=5655, Unknown=0, NotChecked=0, Total=7656 [2020-08-22 16:58:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-08-22 16:58:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 190. [2020-08-22 16:58:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 16:58:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 203 transitions. [2020-08-22 16:58:36,414 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 203 transitions. Word has length 225 [2020-08-22 16:58:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:36,414 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 203 transitions. [2020-08-22 16:58:36,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-08-22 16:58:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 203 transitions. [2020-08-22 16:58:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-08-22 16:58:36,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:36,416 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:36,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:36,630 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1137618157, now seen corresponding path program 31 times [2020-08-22 16:58:36,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:36,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331365463] [2020-08-22 16:58:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 16:58:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 16:58:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:58:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:58:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:58:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:58:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 16:58:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 16:58:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 16:58:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 16:58:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 16:58:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 16:58:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 16:58:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:58:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 16:58:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 16:58:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 16:58:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 16:58:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 16:58:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 16:58:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 16:58:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:37,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331365463] [2020-08-22 16:58:37,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714147107] [2020-08-22 16:58:37,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:58:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:37,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 46 conjunts are in the unsatisfiable core [2020-08-22 16:58:37,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:39,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 68 [2020-08-22 16:58:39,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817388979] [2020-08-22 16:58:39,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-08-22 16:58:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-08-22 16:58:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2020-08-22 16:58:39,220 INFO L87 Difference]: Start difference. First operand 190 states and 203 transitions. Second operand 68 states. [2020-08-22 16:58:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:40,764 INFO L93 Difference]: Finished difference Result 375 states and 454 transitions. [2020-08-22 16:58:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 16:58:40,765 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 227 [2020-08-22 16:58:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:40,767 INFO L225 Difference]: With dead ends: 375 [2020-08-22 16:58:40,767 INFO L226 Difference]: Without dead ends: 280 [2020-08-22 16:58:40,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2113, Invalid=5897, Unknown=0, NotChecked=0, Total=8010 [2020-08-22 16:58:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-22 16:58:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 192. [2020-08-22 16:58:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-08-22 16:58:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2020-08-22 16:58:40,781 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 227 [2020-08-22 16:58:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:40,781 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2020-08-22 16:58:40,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-08-22 16:58:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2020-08-22 16:58:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-08-22 16:58:40,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:40,783 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:40,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-08-22 16:58:40,998 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:40,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:40,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1057457490, now seen corresponding path program 32 times [2020-08-22 16:58:40,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:40,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242334313] [2020-08-22 16:58:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:58:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:58:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:58:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:58:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:58:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:58:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:58:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:58:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:58:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:58:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:41,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242334313] [2020-08-22 16:58:41,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127026439] [2020-08-22 16:58:41,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:41,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:58:41,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:41,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 47 conjunts are in the unsatisfiable core [2020-08-22 16:58:41,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:41,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-08-22 16:58:41,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:41,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-08-22 16:58:41,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734219999] [2020-08-22 16:58:41,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 16:58:41,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 16:58:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2020-08-22 16:58:41,998 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand 29 states. [2020-08-22 16:58:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:42,499 INFO L93 Difference]: Finished difference Result 207 states and 221 transitions. [2020-08-22 16:58:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 16:58:42,500 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-08-22 16:58:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:42,502 INFO L225 Difference]: With dead ends: 207 [2020-08-22 16:58:42,502 INFO L226 Difference]: Without dead ends: 205 [2020-08-22 16:58:42,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2020-08-22 16:58:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-22 16:58:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-08-22 16:58:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 16:58:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2020-08-22 16:58:42,525 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 229 [2020-08-22 16:58:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:42,525 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2020-08-22 16:58:42,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 16:58:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2020-08-22 16:58:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-08-22 16:58:42,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:42,529 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:42,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-08-22 16:58:42,742 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash -777665740, now seen corresponding path program 33 times [2020-08-22 16:58:42,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:42,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94967932] [2020-08-22 16:58:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 16:58:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:58:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:58:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:58:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:58:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:58:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:58:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:58:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:58:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:58:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:58:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:58:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:58:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:58:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:58:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:58:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:58:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:58:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:58:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:58:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:58:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 16:58:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 16:58:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1104 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:44,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94967932] [2020-08-22 16:58:44,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970727536] [2020-08-22 16:58:44,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:58:44,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-08-22 16:58:44,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:44,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 49 conjunts are in the unsatisfiable core [2020-08-22 16:58:44,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1104 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:45,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:45,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 73 [2020-08-22 16:58:45,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782771842] [2020-08-22 16:58:45,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-08-22 16:58:45,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:45,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-08-22 16:58:45,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1248, Invalid=4008, Unknown=0, NotChecked=0, Total=5256 [2020-08-22 16:58:45,795 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 73 states. [2020-08-22 16:58:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:47,493 INFO L93 Difference]: Finished difference Result 403 states and 486 transitions. [2020-08-22 16:58:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 16:58:47,494 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 245 [2020-08-22 16:58:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:47,495 INFO L225 Difference]: With dead ends: 403 [2020-08-22 16:58:47,496 INFO L226 Difference]: Without dead ends: 298 [2020-08-22 16:58:47,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2375, Invalid=6745, Unknown=0, NotChecked=0, Total=9120 [2020-08-22 16:58:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-22 16:58:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 206. [2020-08-22 16:58:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 16:58:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2020-08-22 16:58:47,510 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 245 [2020-08-22 16:58:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:47,511 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2020-08-22 16:58:47,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-08-22 16:58:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2020-08-22 16:58:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-22 16:58:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:47,513 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:47,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-08-22 16:58:47,728 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1435577433, now seen corresponding path program 34 times [2020-08-22 16:58:47,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:47,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012868853] [2020-08-22 16:58:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 16:58:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:58:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:58:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:58:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:58:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:58:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:58:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:58:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 16:58:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 16:58:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 16:58:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 16:58:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 16:58:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 16:58:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 16:58:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 16:58:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 16:58:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 16:58:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 16:58:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 16:58:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 16:58:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 16:58:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 16:58:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:49,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012868853] [2020-08-22 16:58:49,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509889148] [2020-08-22 16:58:49,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:58:49,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:58:49,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:49,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 50 conjunts are in the unsatisfiable core [2020-08-22 16:58:49,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:50,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:50,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 74 [2020-08-22 16:58:50,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681806132] [2020-08-22 16:58:50,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-08-22 16:58:50,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-08-22 16:58:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1273, Invalid=4129, Unknown=0, NotChecked=0, Total=5402 [2020-08-22 16:58:50,863 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 74 states. [2020-08-22 16:58:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:52,623 INFO L93 Difference]: Finished difference Result 407 states and 493 transitions. [2020-08-22 16:58:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 16:58:52,624 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 247 [2020-08-22 16:58:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:52,625 INFO L225 Difference]: With dead ends: 407 [2020-08-22 16:58:52,626 INFO L226 Difference]: Without dead ends: 304 [2020-08-22 16:58:52,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2020-08-22 16:58:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-22 16:58:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 208. [2020-08-22 16:58:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-22 16:58:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2020-08-22 16:58:52,639 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 247 [2020-08-22 16:58:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:52,640 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2020-08-22 16:58:52,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-08-22 16:58:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2020-08-22 16:58:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-08-22 16:58:52,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:52,642 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:52,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-08-22 16:58:52,856 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:52,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1941512130, now seen corresponding path program 35 times [2020-08-22 16:58:52,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:52,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342864395] [2020-08-22 16:58:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:58:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:58:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:58:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:58:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:58:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 16:58:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 16:58:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 16:58:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 16:58:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 16:58:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:53,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342864395] [2020-08-22 16:58:53,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092120803] [2020-08-22 16:58:53,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:58:53,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2020-08-22 16:58:53,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:53,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 51 conjunts are in the unsatisfiable core [2020-08-22 16:58:53,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:53,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:58:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-08-22 16:58:53,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:53,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-08-22 16:58:53,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642122638] [2020-08-22 16:58:53,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 16:58:53,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:53,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 16:58:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:58:53,770 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 31 states. [2020-08-22 16:58:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:54,087 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2020-08-22 16:58:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 16:58:54,088 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 249 [2020-08-22 16:58:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:54,090 INFO L225 Difference]: With dead ends: 223 [2020-08-22 16:58:54,090 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 16:58:54,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=625, Unknown=0, NotChecked=0, Total=992 [2020-08-22 16:58:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 16:58:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2020-08-22 16:58:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 16:58:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2020-08-22 16:58:54,102 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 249 [2020-08-22 16:58:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:54,103 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2020-08-22 16:58:54,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 16:58:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2020-08-22 16:58:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 16:58:54,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:54,105 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:54,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-08-22 16:58:54,319 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash -712391136, now seen corresponding path program 36 times [2020-08-22 16:58:54,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:54,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704045345] [2020-08-22 16:58:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 16:58:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:58:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:58:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:58:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:58:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:58:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:58:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:58:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:58:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:58:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:58:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:58:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:58:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:58:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:58:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:58:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:58:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:58:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 16:58:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 16:58:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 16:58:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 16:58:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 16:58:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 16:58:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 16:58:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:58:55,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704045345] [2020-08-22 16:58:55,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534187597] [2020-08-22 16:58:55,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:58:56,122 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2020-08-22 16:58:56,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:58:56,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 53 conjunts are in the unsatisfiable core [2020-08-22 16:58:56,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:58:58,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:58,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 79 [2020-08-22 16:58:58,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543935666] [2020-08-22 16:58:58,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-08-22 16:58:58,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-08-22 16:58:58,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1456, Invalid=4706, Unknown=0, NotChecked=0, Total=6162 [2020-08-22 16:58:58,059 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand 79 states. [2020-08-22 16:59:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:00,042 INFO L93 Difference]: Finished difference Result 435 states and 525 transitions. [2020-08-22 16:59:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-22 16:59:00,045 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 265 [2020-08-22 16:59:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:00,048 INFO L225 Difference]: With dead ends: 435 [2020-08-22 16:59:00,048 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 16:59:00,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2781, Invalid=7931, Unknown=0, NotChecked=0, Total=10712 [2020-08-22 16:59:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 16:59:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 222. [2020-08-22 16:59:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-22 16:59:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2020-08-22 16:59:00,064 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 265 [2020-08-22 16:59:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:00,064 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2020-08-22 16:59:00,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-08-22 16:59:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2020-08-22 16:59:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-08-22 16:59:00,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:00,066 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:00,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-08-22 16:59:00,280 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash -993908027, now seen corresponding path program 37 times [2020-08-22 16:59:00,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:00,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259853033] [2020-08-22 16:59:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 16:59:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:59:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:59:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:59:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:59:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 16:59:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 16:59:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 16:59:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 16:59:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 16:59:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 16:59:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 16:59:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:59:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 16:59:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 16:59:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 16:59:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 16:59:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 16:59:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 16:59:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 16:59:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 16:59:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 16:59:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 16:59:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 16:59:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 16:59:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:59:01,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259853033] [2020-08-22 16:59:01,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032962657] [2020-08-22 16:59:01,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:59:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 54 conjunts are in the unsatisfiable core [2020-08-22 16:59:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:59:03,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:03,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 80 [2020-08-22 16:59:03,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618172361] [2020-08-22 16:59:03,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-08-22 16:59:03,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-08-22 16:59:03,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4837, Unknown=0, NotChecked=0, Total=6320 [2020-08-22 16:59:03,959 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 80 states. [2020-08-22 16:59:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:06,070 INFO L93 Difference]: Finished difference Result 439 states and 532 transitions. [2020-08-22 16:59:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 16:59:06,070 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 267 [2020-08-22 16:59:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:06,071 INFO L225 Difference]: With dead ends: 439 [2020-08-22 16:59:06,072 INFO L226 Difference]: Without dead ends: 328 [2020-08-22 16:59:06,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2913, Invalid=8217, Unknown=0, NotChecked=0, Total=11130 [2020-08-22 16:59:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-08-22 16:59:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224. [2020-08-22 16:59:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-22 16:59:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2020-08-22 16:59:06,087 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 267 [2020-08-22 16:59:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:06,088 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2020-08-22 16:59:06,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-08-22 16:59:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2020-08-22 16:59:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-22 16:59:06,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:06,091 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:06,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-08-22 16:59:06,306 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:06,306 INFO L82 PathProgramCache]: Analyzing trace with hash -948700630, now seen corresponding path program 38 times [2020-08-22 16:59:06,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:06,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524533933] [2020-08-22 16:59:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:59:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:59:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:59:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:59:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:59:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:59:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:59:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:59:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:59:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:59:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:59:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:59:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:59:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:59:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:59:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:59:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:59:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:59:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:59:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:59:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 16:59:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 16:59:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:59:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 16:59:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 16:59:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:59:07,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524533933] [2020-08-22 16:59:07,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637619122] [2020-08-22 16:59:07,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:59:07,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:59:07,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:07,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 55 conjunts are in the unsatisfiable core [2020-08-22 16:59:07,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:07,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-08-22 16:59:07,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:07,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-08-22 16:59:07,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986230598] [2020-08-22 16:59:07,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-08-22 16:59:07,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:07,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-08-22 16:59:07,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=640, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 16:59:07,357 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand 33 states. [2020-08-22 16:59:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:07,705 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-08-22 16:59:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 16:59:07,706 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 269 [2020-08-22 16:59:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:07,709 INFO L225 Difference]: With dead ends: 239 [2020-08-22 16:59:07,710 INFO L226 Difference]: Without dead ends: 237 [2020-08-22 16:59:07,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=422, Invalid=700, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 16:59:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-22 16:59:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-08-22 16:59:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-22 16:59:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 252 transitions. [2020-08-22 16:59:07,723 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 252 transitions. Word has length 269 [2020-08-22 16:59:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:07,724 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 252 transitions. [2020-08-22 16:59:07,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-08-22 16:59:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 252 transitions. [2020-08-22 16:59:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-22 16:59:07,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:07,727 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:07,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:07,940 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash 167610380, now seen corresponding path program 39 times [2020-08-22 16:59:07,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260320459] [2020-08-22 16:59:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 16:59:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:59:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:59:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:59:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:59:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:59:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:59:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:59:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:59:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:59:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:59:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:59:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:59:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:59:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:59:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:59:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:59:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:59:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:59:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:59:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 16:59:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 16:59:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:59:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 16:59:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 16:59:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 16:59:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 16:59:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1512 proven. 702 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:09,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260320459] [2020-08-22 16:59:09,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277514493] [2020-08-22 16:59:09,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:59:09,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-08-22 16:59:09,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:09,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 57 conjunts are in the unsatisfiable core [2020-08-22 16:59:09,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1512 proven. 702 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:12,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 85 [2020-08-22 16:59:12,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994498134] [2020-08-22 16:59:12,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-08-22 16:59:12,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:12,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-08-22 16:59:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=5460, Unknown=0, NotChecked=0, Total=7140 [2020-08-22 16:59:12,279 INFO L87 Difference]: Start difference. First operand 236 states and 252 transitions. Second operand 85 states. [2020-08-22 16:59:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:14,544 INFO L93 Difference]: Finished difference Result 467 states and 564 transitions. [2020-08-22 16:59:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 16:59:14,545 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 285 [2020-08-22 16:59:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:14,547 INFO L225 Difference]: With dead ends: 467 [2020-08-22 16:59:14,547 INFO L226 Difference]: Without dead ends: 346 [2020-08-22 16:59:14,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3219, Invalid=9213, Unknown=0, NotChecked=0, Total=12432 [2020-08-22 16:59:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-08-22 16:59:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 238. [2020-08-22 16:59:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 16:59:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 254 transitions. [2020-08-22 16:59:14,565 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 254 transitions. Word has length 285 [2020-08-22 16:59:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:14,565 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 254 transitions. [2020-08-22 16:59:14,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-08-22 16:59:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 254 transitions. [2020-08-22 16:59:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-08-22 16:59:14,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:14,568 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:14,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:14,781 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 196225073, now seen corresponding path program 40 times [2020-08-22 16:59:14,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:14,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749915055] [2020-08-22 16:59:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 16:59:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:59:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:59:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:59:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:59:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:59:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:59:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 16:59:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 16:59:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 16:59:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 16:59:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 16:59:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 16:59:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 16:59:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 16:59:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 16:59:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 16:59:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 16:59:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 16:59:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 16:59:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 16:59:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 16:59:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 16:59:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 16:59:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 16:59:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 16:59:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 16:59:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:16,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749915055] [2020-08-22 16:59:16,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821045432] [2020-08-22 16:59:16,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:59:16,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:59:16,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:16,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 58 conjunts are in the unsatisfiable core [2020-08-22 16:59:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:19,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:19,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 86 [2020-08-22 16:59:19,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427439902] [2020-08-22 16:59:19,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-08-22 16:59:19,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:19,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-08-22 16:59:19,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2020-08-22 16:59:19,203 INFO L87 Difference]: Start difference. First operand 238 states and 254 transitions. Second operand 86 states. [2020-08-22 16:59:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:21,705 INFO L93 Difference]: Finished difference Result 471 states and 571 transitions. [2020-08-22 16:59:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-08-22 16:59:21,706 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 287 [2020-08-22 16:59:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:21,707 INFO L225 Difference]: With dead ends: 471 [2020-08-22 16:59:21,708 INFO L226 Difference]: Without dead ends: 352 [2020-08-22 16:59:21,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3361, Invalid=9521, Unknown=0, NotChecked=0, Total=12882 [2020-08-22 16:59:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-08-22 16:59:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 240. [2020-08-22 16:59:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 16:59:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 256 transitions. [2020-08-22 16:59:21,725 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 256 transitions. Word has length 287 [2020-08-22 16:59:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:21,725 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 256 transitions. [2020-08-22 16:59:21,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-08-22 16:59:21,725 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 256 transitions. [2020-08-22 16:59:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-08-22 16:59:21,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:21,728 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:21,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:21,941 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:21,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1925141270, now seen corresponding path program 41 times [2020-08-22 16:59:21,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:21,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896634455] [2020-08-22 16:59:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:59:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:59:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:59:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:59:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:59:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:59:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:59:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:59:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:59:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:59:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:59:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:59:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:59:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:59:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:59:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:59:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:59:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 16:59:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 16:59:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 16:59:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 16:59:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 16:59:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 16:59:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 16:59:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 16:59:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 16:59:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 16:59:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:22,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896634455] [2020-08-22 16:59:22,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310575305] [2020-08-22 16:59:22,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 16:59:22,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2020-08-22 16:59:22,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:22,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2020-08-22 16:59:22,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:22,997 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-08-22 16:59:23,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:23,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-08-22 16:59:23,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119414499] [2020-08-22 16:59:23,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-08-22 16:59:23,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-08-22 16:59:23,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 16:59:23,148 INFO L87 Difference]: Start difference. First operand 240 states and 256 transitions. Second operand 35 states. [2020-08-22 16:59:23,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:23,554 INFO L93 Difference]: Finished difference Result 255 states and 272 transitions. [2020-08-22 16:59:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 16:59:23,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 289 [2020-08-22 16:59:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:23,557 INFO L225 Difference]: With dead ends: 255 [2020-08-22 16:59:23,558 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 16:59:23,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=481, Invalid=779, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 16:59:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 16:59:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2020-08-22 16:59:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-08-22 16:59:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-08-22 16:59:23,571 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 289 [2020-08-22 16:59:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:23,571 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-08-22 16:59:23,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-08-22 16:59:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-08-22 16:59:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-22 16:59:23,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:23,574 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:23,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-08-22 16:59:23,787 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2144237320, now seen corresponding path program 42 times [2020-08-22 16:59:23,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:23,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291673083] [2020-08-22 16:59:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 16:59:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 16:59:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 16:59:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 16:59:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 16:59:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 16:59:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 16:59:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 16:59:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 16:59:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 16:59:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 16:59:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 16:59:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 16:59:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 16:59:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 16:59:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 16:59:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 16:59:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 16:59:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 16:59:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 16:59:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 16:59:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 16:59:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 16:59:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 16:59:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 16:59:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 16:59:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 16:59:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 16:59:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 16:59:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:25,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291673083] [2020-08-22 16:59:25,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923799750] [2020-08-22 16:59:25,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 16:59:26,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2020-08-22 16:59:26,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:26,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 61 conjunts are in the unsatisfiable core [2020-08-22 16:59:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:28,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:28,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 91 [2020-08-22 16:59:28,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479583500] [2020-08-22 16:59:28,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-08-22 16:59:28,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:28,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-08-22 16:59:28,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1920, Invalid=6270, Unknown=0, NotChecked=0, Total=8190 [2020-08-22 16:59:28,866 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 91 states. [2020-08-22 16:59:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:31,599 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2020-08-22 16:59:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-08-22 16:59:31,600 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 305 [2020-08-22 16:59:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:31,602 INFO L225 Difference]: With dead ends: 499 [2020-08-22 16:59:31,603 INFO L226 Difference]: Without dead ends: 370 [2020-08-22 16:59:31,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3689, Invalid=10591, Unknown=0, NotChecked=0, Total=14280 [2020-08-22 16:59:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-22 16:59:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 254. [2020-08-22 16:59:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-22 16:59:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 271 transitions. [2020-08-22 16:59:31,619 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 271 transitions. Word has length 305 [2020-08-22 16:59:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:31,619 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 271 transitions. [2020-08-22 16:59:31,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-08-22 16:59:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 271 transitions. [2020-08-22 16:59:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-22 16:59:31,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:31,622 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:31,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:31,836 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:31,837 INFO L82 PathProgramCache]: Analyzing trace with hash 191997085, now seen corresponding path program 43 times [2020-08-22 16:59:31,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:31,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922947819] [2020-08-22 16:59:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 16:59:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 16:59:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 16:59:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 16:59:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 16:59:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 16:59:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 16:59:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 16:59:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 16:59:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 16:59:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 16:59:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 16:59:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 16:59:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 16:59:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 16:59:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 16:59:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 16:59:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 16:59:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 16:59:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 16:59:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 16:59:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 16:59:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 16:59:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 16:59:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 16:59:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 16:59:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 16:59:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 16:59:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 16:59:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:34,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922947819] [2020-08-22 16:59:34,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164004753] [2020-08-22 16:59:34,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 16:59:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:34,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 62 conjunts are in the unsatisfiable core [2020-08-22 16:59:34,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:37,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:37,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 92 [2020-08-22 16:59:37,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212415074] [2020-08-22 16:59:37,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-08-22 16:59:37,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:37,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-08-22 16:59:37,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1951, Invalid=6421, Unknown=0, NotChecked=0, Total=8372 [2020-08-22 16:59:37,178 INFO L87 Difference]: Start difference. First operand 254 states and 271 transitions. Second operand 92 states. [2020-08-22 16:59:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:40,238 INFO L93 Difference]: Finished difference Result 503 states and 610 transitions. [2020-08-22 16:59:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-08-22 16:59:40,239 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 307 [2020-08-22 16:59:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:40,241 INFO L225 Difference]: With dead ends: 503 [2020-08-22 16:59:40,241 INFO L226 Difference]: Without dead ends: 376 [2020-08-22 16:59:40,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2987 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3841, Invalid=10921, Unknown=0, NotChecked=0, Total=14762 [2020-08-22 16:59:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-22 16:59:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 256. [2020-08-22 16:59:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-22 16:59:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 273 transitions. [2020-08-22 16:59:40,258 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 273 transitions. Word has length 307 [2020-08-22 16:59:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:40,258 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 273 transitions. [2020-08-22 16:59:40,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-08-22 16:59:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 273 transitions. [2020-08-22 16:59:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-22 16:59:40,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:40,261 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:40,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:40,474 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:40,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:40,475 INFO L82 PathProgramCache]: Analyzing trace with hash -954635518, now seen corresponding path program 44 times [2020-08-22 16:59:40,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:40,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248201258] [2020-08-22 16:59:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:59:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:59:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:59:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:59:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:59:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:59:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:59:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:59:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:59:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:59:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:59:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:59:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:59:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:59:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:59:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:59:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:59:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:59:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:59:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 16:59:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 16:59:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:59:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 16:59:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 16:59:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 16:59:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 16:59:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 16:59:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 16:59:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 16:59:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:41,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248201258] [2020-08-22 16:59:41,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514190366] [2020-08-22 16:59:41,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 16:59:41,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:59:41,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjunts are in the unsatisfiable core [2020-08-22 16:59:41,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:41,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-08-22 16:59:41,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:41,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-08-22 16:59:41,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798196060] [2020-08-22 16:59:41,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-08-22 16:59:41,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:41,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-08-22 16:59:41,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=794, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 16:59:41,764 INFO L87 Difference]: Start difference. First operand 256 states and 273 transitions. Second operand 37 states. [2020-08-22 16:59:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:42,251 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-08-22 16:59:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 16:59:42,252 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 309 [2020-08-22 16:59:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:42,254 INFO L225 Difference]: With dead ends: 271 [2020-08-22 16:59:42,254 INFO L226 Difference]: Without dead ends: 269 [2020-08-22 16:59:42,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=544, Invalid=862, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 16:59:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-22 16:59:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2020-08-22 16:59:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 16:59:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 286 transitions. [2020-08-22 16:59:42,268 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 286 transitions. Word has length 309 [2020-08-22 16:59:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:42,269 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 286 transitions. [2020-08-22 16:59:42,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-08-22 16:59:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 286 transitions. [2020-08-22 16:59:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-08-22 16:59:42,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:42,272 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:42,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-08-22 16:59:42,487 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash -2146023196, now seen corresponding path program 45 times [2020-08-22 16:59:42,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:42,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609158298] [2020-08-22 16:59:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 16:59:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 16:59:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 16:59:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 16:59:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 16:59:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 16:59:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 16:59:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 16:59:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 16:59:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 16:59:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 16:59:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 16:59:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 16:59:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 16:59:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 16:59:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 16:59:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 16:59:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 16:59:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 16:59:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 16:59:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 16:59:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 16:59:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 16:59:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 16:59:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 16:59:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 16:59:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 16:59:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 16:59:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 16:59:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 16:59:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 16:59:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1984 proven. 930 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 16:59:44,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609158298] [2020-08-22 16:59:44,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219788001] [2020-08-22 16:59:44,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 16:59:45,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2020-08-22 16:59:45,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:45,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 65 conjunts are in the unsatisfiable core [2020-08-22 16:59:45,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1984 proven. 930 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 16:59:48,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:48,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 97 [2020-08-22 16:59:48,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223381523] [2020-08-22 16:59:48,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-08-22 16:59:48,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-08-22 16:59:48,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2176, Invalid=7136, Unknown=0, NotChecked=0, Total=9312 [2020-08-22 16:59:48,532 INFO L87 Difference]: Start difference. First operand 268 states and 286 transitions. Second operand 97 states. [2020-08-22 16:59:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:51,556 INFO L93 Difference]: Finished difference Result 531 states and 642 transitions. [2020-08-22 16:59:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-08-22 16:59:51,558 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 325 [2020-08-22 16:59:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:51,560 INFO L225 Difference]: With dead ends: 531 [2020-08-22 16:59:51,560 INFO L226 Difference]: Without dead ends: 394 [2020-08-22 16:59:51,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3346 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4191, Invalid=12065, Unknown=0, NotChecked=0, Total=16256 [2020-08-22 16:59:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-22 16:59:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 270. [2020-08-22 16:59:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 16:59:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2020-08-22 16:59:51,579 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 325 [2020-08-22 16:59:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:51,579 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2020-08-22 16:59:51,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-08-22 16:59:51,580 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2020-08-22 16:59:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-22 16:59:51,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:51,583 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:51,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-08-22 16:59:51,797 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 735125513, now seen corresponding path program 46 times [2020-08-22 16:59:51,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:51,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223091231] [2020-08-22 16:59:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 16:59:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 16:59:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 16:59:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 16:59:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 16:59:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 16:59:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 16:59:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 16:59:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 16:59:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 16:59:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 16:59:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 16:59:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 16:59:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 16:59:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 16:59:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 16:59:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 16:59:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 16:59:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 16:59:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 16:59:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 16:59:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 16:59:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 16:59:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 16:59:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 16:59:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 16:59:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 16:59:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 16:59:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 16:59:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 16:59:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 16:59:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 16:59:54,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223091231] [2020-08-22 16:59:54,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51584795] [2020-08-22 16:59:54,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 16:59:54,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 16:59:54,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:54,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 66 conjunts are in the unsatisfiable core [2020-08-22 16:59:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 16:59:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:59:58,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 98 [2020-08-22 16:59:58,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993807601] [2020-08-22 16:59:58,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-08-22 16:59:58,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:58,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-08-22 16:59:58,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2209, Invalid=7297, Unknown=0, NotChecked=0, Total=9506 [2020-08-22 16:59:58,090 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 98 states. [2020-08-22 17:00:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:01,572 INFO L93 Difference]: Finished difference Result 535 states and 649 transitions. [2020-08-22 17:00:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-08-22 17:00:01,572 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 327 [2020-08-22 17:00:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:01,574 INFO L225 Difference]: With dead ends: 535 [2020-08-22 17:00:01,575 INFO L226 Difference]: Without dead ends: 400 [2020-08-22 17:00:01,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3410 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4353, Invalid=12417, Unknown=0, NotChecked=0, Total=16770 [2020-08-22 17:00:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-08-22 17:00:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 272. [2020-08-22 17:00:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 17:00:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 290 transitions. [2020-08-22 17:00:01,598 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 290 transitions. Word has length 327 [2020-08-22 17:00:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:01,598 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 290 transitions. [2020-08-22 17:00:01,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-08-22 17:00:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 290 transitions. [2020-08-22 17:00:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-08-22 17:00:01,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:01,601 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:01,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-08-22 17:00:01,815 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:01,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:01,816 INFO L82 PathProgramCache]: Analyzing trace with hash -734871058, now seen corresponding path program 47 times [2020-08-22 17:00:01,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:01,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327369955] [2020-08-22 17:00:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 17:00:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 17:00:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:00:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:00:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:00:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:00:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:00:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:00:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:00:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:00:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:00:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:00:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:00:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:00:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:00:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:00:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:00:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:00:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:00:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:00:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:00:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:00:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:00:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:00:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:00:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:00:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:00:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:00:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:00:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:00:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:00:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 17:00:02,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327369955] [2020-08-22 17:00:02,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088347954] [2020-08-22 17:00:02,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:00:03,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2020-08-22 17:00:03,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 67 conjunts are in the unsatisfiable core [2020-08-22 17:00:03,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:03,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:00:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-08-22 17:00:03,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:03,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-08-22 17:00:03,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249909979] [2020-08-22 17:00:03,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 17:00:03,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 17:00:03,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=877, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 17:00:03,365 INFO L87 Difference]: Start difference. First operand 272 states and 290 transitions. Second operand 39 states. [2020-08-22 17:00:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:03,925 INFO L93 Difference]: Finished difference Result 287 states and 306 transitions. [2020-08-22 17:00:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 17:00:03,926 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 329 [2020-08-22 17:00:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:03,928 INFO L225 Difference]: With dead ends: 287 [2020-08-22 17:00:03,929 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 17:00:03,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=611, Invalid=949, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 17:00:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 17:00:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-08-22 17:00:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-08-22 17:00:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 303 transitions. [2020-08-22 17:00:03,940 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 303 transitions. Word has length 329 [2020-08-22 17:00:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:03,940 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 303 transitions. [2020-08-22 17:00:03,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 17:00:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 303 transitions. [2020-08-22 17:00:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-08-22 17:00:03,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:03,942 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:04,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:00:04,143 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1470347312, now seen corresponding path program 48 times [2020-08-22 17:00:04,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:04,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548745661] [2020-08-22 17:00:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 17:00:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 17:00:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:00:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:00:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:00:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:00:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:00:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:00:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:00:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:00:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:00:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:00:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:00:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:00:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:00:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:00:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:00:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:00:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:00:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:00:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:00:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:00:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:00:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:00:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:00:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:00:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:00:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:00:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:00:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:00:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:00:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:00:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:00:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:07,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548745661] [2020-08-22 17:00:07,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630666655] [2020-08-22 17:00:07,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:00:07,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2020-08-22 17:00:07,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:07,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 69 conjunts are in the unsatisfiable core [2020-08-22 17:00:07,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:11,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:11,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 103 [2020-08-22 17:00:11,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332267972] [2020-08-22 17:00:11,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-08-22 17:00:11,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:11,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-08-22 17:00:11,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=8058, Unknown=0, NotChecked=0, Total=10506 [2020-08-22 17:00:11,527 INFO L87 Difference]: Start difference. First operand 284 states and 303 transitions. Second operand 103 states. [2020-08-22 17:00:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:15,231 INFO L93 Difference]: Finished difference Result 563 states and 681 transitions. [2020-08-22 17:00:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-08-22 17:00:15,233 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 345 [2020-08-22 17:00:15,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:15,236 INFO L225 Difference]: With dead ends: 563 [2020-08-22 17:00:15,236 INFO L226 Difference]: Without dead ends: 418 [2020-08-22 17:00:15,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4725, Invalid=13635, Unknown=0, NotChecked=0, Total=18360 [2020-08-22 17:00:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-22 17:00:15,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 286. [2020-08-22 17:00:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 17:00:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 305 transitions. [2020-08-22 17:00:15,252 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 305 transitions. Word has length 345 [2020-08-22 17:00:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:15,253 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 305 transitions. [2020-08-22 17:00:15,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-08-22 17:00:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 305 transitions. [2020-08-22 17:00:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-08-22 17:00:15,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:15,258 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:15,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:00:15,473 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2069961333, now seen corresponding path program 49 times [2020-08-22 17:00:15,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:15,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285666408] [2020-08-22 17:00:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 17:00:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:00:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 17:00:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 17:00:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 17:00:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:00:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:00:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:00:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:00:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:00:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:00:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:00:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:00:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:00:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:00:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:00:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:00:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:00:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:00:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:00:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:00:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:00:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:00:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:00:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:00:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:00:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:00:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:00:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:00:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:00:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:00:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:00:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:00:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:18,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285666408] [2020-08-22 17:00:18,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160972590] [2020-08-22 17:00:18,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:00:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:18,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 70 conjunts are in the unsatisfiable core [2020-08-22 17:00:18,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:22,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:22,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 104 [2020-08-22 17:00:22,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634095182] [2020-08-22 17:00:22,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-08-22 17:00:22,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:22,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-08-22 17:00:22,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2483, Invalid=8229, Unknown=0, NotChecked=0, Total=10712 [2020-08-22 17:00:22,979 INFO L87 Difference]: Start difference. First operand 286 states and 305 transitions. Second operand 104 states. [2020-08-22 17:00:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:27,121 INFO L93 Difference]: Finished difference Result 567 states and 688 transitions. [2020-08-22 17:00:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-08-22 17:00:27,122 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 347 [2020-08-22 17:00:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:27,124 INFO L225 Difference]: With dead ends: 567 [2020-08-22 17:00:27,124 INFO L226 Difference]: Without dead ends: 424 [2020-08-22 17:00:27,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=4897, Invalid=14009, Unknown=0, NotChecked=0, Total=18906 [2020-08-22 17:00:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-22 17:00:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 288. [2020-08-22 17:00:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-08-22 17:00:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2020-08-22 17:00:27,142 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 347 [2020-08-22 17:00:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:27,142 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2020-08-22 17:00:27,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-08-22 17:00:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2020-08-22 17:00:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-08-22 17:00:27,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:27,145 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:27,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:00:27,359 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1602496550, now seen corresponding path program 50 times [2020-08-22 17:00:27,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:27,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948578292] [2020-08-22 17:00:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 17:00:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:00:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:00:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:00:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:00:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:00:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:00:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:00:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:00:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:00:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:00:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:00:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:00:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:00:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:00:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:00:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:00:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:00:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:00:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:00:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:00:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:00:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:00:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:00:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:00:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:00:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:00:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:00:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:00:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:00:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:00:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:00:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:00:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:28,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948578292] [2020-08-22 17:00:28,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867818954] [2020-08-22 17:00:28,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:00:28,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:00:28,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:28,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 71 conjunts are in the unsatisfiable core [2020-08-22 17:00:28,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:28,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:00:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-08-22 17:00:29,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:29,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-08-22 17:00:29,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567574410] [2020-08-22 17:00:29,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-22 17:00:29,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-22 17:00:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=964, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 17:00:29,013 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand 41 states. [2020-08-22 17:00:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:29,656 INFO L93 Difference]: Finished difference Result 303 states and 323 transitions. [2020-08-22 17:00:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 17:00:29,658 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 349 [2020-08-22 17:00:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:29,660 INFO L225 Difference]: With dead ends: 303 [2020-08-22 17:00:29,661 INFO L226 Difference]: Without dead ends: 301 [2020-08-22 17:00:29,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=682, Invalid=1040, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 17:00:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-08-22 17:00:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2020-08-22 17:00:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-08-22 17:00:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 320 transitions. [2020-08-22 17:00:29,677 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 320 transitions. Word has length 349 [2020-08-22 17:00:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:29,678 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 320 transitions. [2020-08-22 17:00:29,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-22 17:00:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 320 transitions. [2020-08-22 17:00:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-08-22 17:00:29,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:29,680 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:29,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:00:29,881 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:29,882 INFO L82 PathProgramCache]: Analyzing trace with hash 242484668, now seen corresponding path program 51 times [2020-08-22 17:00:29,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:29,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166902534] [2020-08-22 17:00:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 17:00:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:00:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:00:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:00:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:00:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:00:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:00:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:00:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:00:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:00:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:00:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:00:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:00:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:00:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:00:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:00:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:00:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:00:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:00:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:00:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:00:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:00:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:00:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:00:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:00:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:00:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:00:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:00:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:00:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:00:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:00:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:00:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:00:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:00:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:00:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2520 proven. 1190 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:33,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166902534] [2020-08-22 17:00:33,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861308939] [2020-08-22 17:00:33,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 17:00:33,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2020-08-22 17:00:33,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:33,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 73 conjunts are in the unsatisfiable core [2020-08-22 17:00:33,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2520 proven. 1190 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:38,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:38,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 109 [2020-08-22 17:00:38,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264372890] [2020-08-22 17:00:38,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-08-22 17:00:38,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:38,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-08-22 17:00:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2736, Invalid=9036, Unknown=0, NotChecked=0, Total=11772 [2020-08-22 17:00:38,655 INFO L87 Difference]: Start difference. First operand 300 states and 320 transitions. Second operand 109 states. [2020-08-22 17:00:42,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:42,470 INFO L93 Difference]: Finished difference Result 595 states and 720 transitions. [2020-08-22 17:00:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-08-22 17:00:42,471 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 365 [2020-08-22 17:00:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:42,474 INFO L225 Difference]: With dead ends: 595 [2020-08-22 17:00:42,474 INFO L226 Difference]: Without dead ends: 442 [2020-08-22 17:00:42,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4268 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=5291, Invalid=15301, Unknown=0, NotChecked=0, Total=20592 [2020-08-22 17:00:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-22 17:00:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 302. [2020-08-22 17:00:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-08-22 17:00:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 322 transitions. [2020-08-22 17:00:42,492 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 322 transitions. Word has length 365 [2020-08-22 17:00:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:42,492 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 322 transitions. [2020-08-22 17:00:42,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-08-22 17:00:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 322 transitions. [2020-08-22 17:00:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-08-22 17:00:42,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:42,495 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:42,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-08-22 17:00:42,705 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:42,706 INFO L82 PathProgramCache]: Analyzing trace with hash -814607391, now seen corresponding path program 52 times [2020-08-22 17:00:42,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:42,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904864099] [2020-08-22 17:00:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:00:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 17:00:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:00:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 17:00:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 17:00:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 17:00:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:00:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:00:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:00:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 17:00:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 17:00:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:00:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 17:00:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:00:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:00:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 17:00:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 17:00:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 17:00:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 17:00:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 17:00:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 17:00:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 17:00:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 17:00:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 17:00:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 17:00:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 17:00:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 17:00:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 17:00:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 17:00:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 17:00:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 17:00:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 17:00:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-22 17:00:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 17:00:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 17:00:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:46,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904864099] [2020-08-22 17:00:46,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650296143] [2020-08-22 17:00:46,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 17:00:46,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 17:00:46,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:46,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 74 conjunts are in the unsatisfiable core [2020-08-22 17:00:46,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:51,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:51,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 110 [2020-08-22 17:00:51,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687430730] [2020-08-22 17:00:51,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-08-22 17:00:51,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:51,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-08-22 17:00:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2773, Invalid=9217, Unknown=0, NotChecked=0, Total=11990 [2020-08-22 17:00:51,916 INFO L87 Difference]: Start difference. First operand 302 states and 322 transitions. Second operand 110 states. [2020-08-22 17:00:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:55,846 INFO L93 Difference]: Finished difference Result 599 states and 727 transitions. [2020-08-22 17:00:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-08-22 17:00:55,846 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 367 [2020-08-22 17:00:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:55,849 INFO L225 Difference]: With dead ends: 599 [2020-08-22 17:00:55,849 INFO L226 Difference]: Without dead ends: 448 [2020-08-22 17:00:55,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=5473, Invalid=15697, Unknown=0, NotChecked=0, Total=21170 [2020-08-22 17:00:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-22 17:00:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 304. [2020-08-22 17:00:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-22 17:00:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 324 transitions. [2020-08-22 17:00:55,871 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 324 transitions. Word has length 367 [2020-08-22 17:00:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:55,872 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 324 transitions. [2020-08-22 17:00:55,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-08-22 17:00:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 324 transitions. [2020-08-22 17:00:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-08-22 17:00:55,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:55,876 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:56,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:00:56,091 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:56,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1227173062, now seen corresponding path program 53 times [2020-08-22 17:00:56,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:56,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188369415] [2020-08-22 17:00:56,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:00:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 17:00:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:00:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:00:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:00:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:00:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:00:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:00:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:00:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:00:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:00:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:00:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:00:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:00:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:00:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:00:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:00:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:00:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:00:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:00:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:00:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:00:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:00:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:00:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:00:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:00:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:00:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:00:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:00:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:00:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:00:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:00:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:00:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:00:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:00:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:00:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:00:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:57,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188369415] [2020-08-22 17:00:57,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121968361] [2020-08-22 17:00:57,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:00:58,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2020-08-22 17:00:58,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:00:58,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 75 conjunts are in the unsatisfiable core [2020-08-22 17:00:58,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:00:58,077 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:00:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-08-22 17:00:58,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:00:58,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-08-22 17:00:58,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723853754] [2020-08-22 17:00:58,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-08-22 17:00:58,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-08-22 17:00:58,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=1055, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 17:00:58,244 INFO L87 Difference]: Start difference. First operand 304 states and 324 transitions. Second operand 43 states. [2020-08-22 17:00:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:00:58,953 INFO L93 Difference]: Finished difference Result 319 states and 340 transitions. [2020-08-22 17:00:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 17:00:58,955 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 369 [2020-08-22 17:00:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:00:58,957 INFO L225 Difference]: With dead ends: 319 [2020-08-22 17:00:58,958 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 17:00:58,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=757, Invalid=1135, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 17:00:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 17:00:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2020-08-22 17:00:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 17:00:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 337 transitions. [2020-08-22 17:00:58,974 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 337 transitions. Word has length 369 [2020-08-22 17:00:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:00:58,974 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 337 transitions. [2020-08-22 17:00:58,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-08-22 17:00:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 337 transitions. [2020-08-22 17:00:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-08-22 17:00:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:00:58,977 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:00:59,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-08-22 17:00:59,193 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:00:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:00:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1586365096, now seen corresponding path program 54 times [2020-08-22 17:00:59,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:00:59,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172967977] [2020-08-22 17:00:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:00:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:01:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 17:01:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:01:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:01:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:01:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:01:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:01:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:01:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:01:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:01:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:01:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:01:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:01:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:01:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:01:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:01:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:01:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:01:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:01:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:01:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:01:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:01:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:01:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:01:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:01:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:01:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:01:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:01:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:01:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:01:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:01:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:01:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:01:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:01:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:01:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:01:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:01:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:01:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:03,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172967977] [2020-08-22 17:01:03,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30188964] [2020-08-22 17:01:03,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:01:03,780 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2020-08-22 17:01:03,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:01:03,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 77 conjunts are in the unsatisfiable core [2020-08-22 17:01:03,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:01:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:09,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:01:09,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 115 [2020-08-22 17:01:09,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407128924] [2020-08-22 17:01:09,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-08-22 17:01:09,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:01:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-08-22 17:01:09,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3040, Invalid=10070, Unknown=0, NotChecked=0, Total=13110 [2020-08-22 17:01:09,655 INFO L87 Difference]: Start difference. First operand 316 states and 337 transitions. Second operand 115 states. [2020-08-22 17:01:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:01:14,327 INFO L93 Difference]: Finished difference Result 627 states and 759 transitions. [2020-08-22 17:01:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-08-22 17:01:14,329 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 385 [2020-08-22 17:01:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:01:14,331 INFO L225 Difference]: With dead ends: 627 [2020-08-22 17:01:14,332 INFO L226 Difference]: Without dead ends: 466 [2020-08-22 17:01:14,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4771 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=5889, Invalid=17063, Unknown=0, NotChecked=0, Total=22952 [2020-08-22 17:01:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-22 17:01:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 318. [2020-08-22 17:01:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-22 17:01:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 339 transitions. [2020-08-22 17:01:14,352 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 339 transitions. Word has length 385 [2020-08-22 17:01:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:01:14,352 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 339 transitions. [2020-08-22 17:01:14,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-08-22 17:01:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 339 transitions. [2020-08-22 17:01:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-08-22 17:01:14,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:01:14,356 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:01:14,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-08-22 17:01:14,572 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:01:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:01:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash -468415411, now seen corresponding path program 55 times [2020-08-22 17:01:14,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:01:14,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904068297] [2020-08-22 17:01:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:01:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:01:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 17:01:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 17:01:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 17:01:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 17:01:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:01:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:01:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:01:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:01:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:01:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:01:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:01:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:01:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:01:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:01:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:01:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:01:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:01:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:01:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:01:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:01:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:01:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:01:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:01:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:01:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:01:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:01:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:01:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:01:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:01:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:01:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:01:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:01:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-22 17:01:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 17:01:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-08-22 17:01:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 17:01:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-08-22 17:01:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:19,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904068297] [2020-08-22 17:01:19,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379467009] [2020-08-22 17:01:19,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:01:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:19,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 78 conjunts are in the unsatisfiable core [2020-08-22 17:01:19,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:01:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:25,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:01:25,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 116 [2020-08-22 17:01:25,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927155761] [2020-08-22 17:01:25,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2020-08-22 17:01:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:01:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2020-08-22 17:01:25,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=10261, Unknown=0, NotChecked=0, Total=13340 [2020-08-22 17:01:25,779 INFO L87 Difference]: Start difference. First operand 318 states and 339 transitions. Second operand 116 states. [2020-08-22 17:01:30,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:01:30,781 INFO L93 Difference]: Finished difference Result 631 states and 766 transitions. [2020-08-22 17:01:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-08-22 17:01:30,781 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 387 [2020-08-22 17:01:30,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:01:30,784 INFO L225 Difference]: With dead ends: 631 [2020-08-22 17:01:30,784 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 17:01:30,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4847 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=6081, Invalid=17481, Unknown=0, NotChecked=0, Total=23562 [2020-08-22 17:01:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 17:01:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 320. [2020-08-22 17:01:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-22 17:01:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 341 transitions. [2020-08-22 17:01:30,803 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 341 transitions. Word has length 387 [2020-08-22 17:01:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:01:30,804 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 341 transitions. [2020-08-22 17:01:30,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 116 states. [2020-08-22 17:01:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 341 transitions. [2020-08-22 17:01:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-08-22 17:01:30,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:01:30,807 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:01:31,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:01:31,022 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:01:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:01:31,023 INFO L82 PathProgramCache]: Analyzing trace with hash 572473522, now seen corresponding path program 56 times [2020-08-22 17:01:31,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:01:31,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786030698] [2020-08-22 17:01:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:01:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:01:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:01:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:01:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:01:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:01:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:01:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:01:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:01:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:01:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:01:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:01:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:01:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:01:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:01:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:01:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:01:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:01:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:01:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:01:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:01:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:01:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:01:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:01:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:01:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:01:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:01:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:01:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:01:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:01:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:01:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:01:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:01:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:01:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:01:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:01:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:01:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:01:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:01:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:33,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786030698] [2020-08-22 17:01:33,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858095705] [2020-08-22 17:01:33,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:01:33,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:01:33,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:01:33,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 79 conjunts are in the unsatisfiable core [2020-08-22 17:01:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:01:33,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:01:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-08-22 17:01:33,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:01:33,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-08-22 17:01:33,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024537023] [2020-08-22 17:01:33,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-08-22 17:01:33,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:01:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-08-22 17:01:33,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=830, Invalid=1150, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 17:01:33,641 INFO L87 Difference]: Start difference. First operand 320 states and 341 transitions. Second operand 45 states. [2020-08-22 17:01:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:01:34,532 INFO L93 Difference]: Finished difference Result 335 states and 357 transitions. [2020-08-22 17:01:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 17:01:34,534 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 389 [2020-08-22 17:01:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:01:34,537 INFO L225 Difference]: With dead ends: 335 [2020-08-22 17:01:34,537 INFO L226 Difference]: Without dead ends: 333 [2020-08-22 17:01:34,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=836, Invalid=1234, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 17:01:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-22 17:01:34,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-08-22 17:01:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 17:01:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 354 transitions. [2020-08-22 17:01:34,550 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 354 transitions. Word has length 389 [2020-08-22 17:01:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:01:34,550 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 354 transitions. [2020-08-22 17:01:34,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-08-22 17:01:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 354 transitions. [2020-08-22 17:01:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-08-22 17:01:34,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:01:34,552 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:01:34,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-08-22 17:01:34,754 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:01:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:01:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash -73744748, now seen corresponding path program 57 times [2020-08-22 17:01:34,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:01:34,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184359194] [2020-08-22 17:01:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:01:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:01:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:01:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:01:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:01:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:01:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:01:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:01:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:01:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:01:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:01:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:01:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:01:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:01:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:01:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:01:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:01:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:01:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:01:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:01:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:01:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:01:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:01:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:01:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:01:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:01:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:01:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:01:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:01:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:01:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:01:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:01:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:01:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:01:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:01:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:01:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:01:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:01:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:01:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:01:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:01:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:01:40,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184359194] [2020-08-22 17:01:40,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056077600] [2020-08-22 17:01:40,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 17:01:40,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-08-22 17:01:40,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:01:40,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 81 conjunts are in the unsatisfiable core [2020-08-22 17:01:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:01:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:01:47,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:01:47,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 121 [2020-08-22 17:01:47,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557454096] [2020-08-22 17:01:47,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-08-22 17:01:47,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:01:47,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-08-22 17:01:47,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3360, Invalid=11160, Unknown=0, NotChecked=0, Total=14520 [2020-08-22 17:01:47,494 INFO L87 Difference]: Start difference. First operand 332 states and 354 transitions. Second operand 121 states. [2020-08-22 17:01:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:01:53,125 INFO L93 Difference]: Finished difference Result 659 states and 798 transitions. [2020-08-22 17:01:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-08-22 17:01:53,126 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 405 [2020-08-22 17:01:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:01:53,129 INFO L225 Difference]: With dead ends: 659 [2020-08-22 17:01:53,129 INFO L226 Difference]: Without dead ends: 490 [2020-08-22 17:01:53,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5302 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=6519, Invalid=18921, Unknown=0, NotChecked=0, Total=25440 [2020-08-22 17:01:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-22 17:01:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 334. [2020-08-22 17:01:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-22 17:01:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2020-08-22 17:01:53,152 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 405 [2020-08-22 17:01:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:01:53,152 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2020-08-22 17:01:53,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-08-22 17:01:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2020-08-22 17:01:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-08-22 17:01:53,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:01:53,157 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:01:53,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:01:53,370 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:01:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:01:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2082014137, now seen corresponding path program 58 times [2020-08-22 17:01:53,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:01:53,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929442652] [2020-08-22 17:01:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:01:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:01:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 17:01:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:01:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 17:01:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 17:01:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 17:01:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:01:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:01:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:01:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 17:01:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 17:01:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:01:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 17:01:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:01:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:01:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 17:01:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 17:01:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 17:01:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 17:01:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 17:01:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 17:01:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 17:01:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 17:01:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 17:01:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 17:01:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 17:01:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 17:01:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 17:01:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 17:01:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 17:01:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 17:01:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 17:01:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-22 17:01:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 17:01:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 17:01:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 17:01:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-22 17:01:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-08-22 17:01:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-08-22 17:01:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-08-22 17:01:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:01:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:01:59,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929442652] [2020-08-22 17:01:59,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909543515] [2020-08-22 17:01:59,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 17:01:59,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 17:01:59,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:01:59,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 82 conjunts are in the unsatisfiable core [2020-08-22 17:01:59,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:02:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:02:06,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:02:06,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 122 [2020-08-22 17:02:06,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725504204] [2020-08-22 17:02:06,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2020-08-22 17:02:06,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:02:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2020-08-22 17:02:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3401, Invalid=11361, Unknown=0, NotChecked=0, Total=14762 [2020-08-22 17:02:06,728 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 122 states. [2020-08-22 17:02:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:02:12,313 INFO L93 Difference]: Finished difference Result 663 states and 805 transitions. [2020-08-22 17:02:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-08-22 17:02:12,314 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 407 [2020-08-22 17:02:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:02:12,317 INFO L225 Difference]: With dead ends: 663 [2020-08-22 17:02:12,317 INFO L226 Difference]: Without dead ends: 496 [2020-08-22 17:02:12,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5382 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=6721, Invalid=19361, Unknown=0, NotChecked=0, Total=26082 [2020-08-22 17:02:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-08-22 17:02:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 336. [2020-08-22 17:02:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-08-22 17:02:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 358 transitions. [2020-08-22 17:02:12,334 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 358 transitions. Word has length 407 [2020-08-22 17:02:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:02:12,334 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 358 transitions. [2020-08-22 17:02:12,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 122 states. [2020-08-22 17:02:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 358 transitions. [2020-08-22 17:02:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-08-22 17:02:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:02:12,337 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:02:12,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-08-22 17:02:12,538 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:02:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:02:12,539 INFO L82 PathProgramCache]: Analyzing trace with hash -702901346, now seen corresponding path program 59 times [2020-08-22 17:02:12,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:02:12,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127740242] [2020-08-22 17:02:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:02:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:02:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:02:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:02:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:02:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:02:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:02:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:02:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:02:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:02:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:02:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:02:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:02:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:02:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:02:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:02:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:02:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:02:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:02:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:02:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:02:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:02:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:02:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:02:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:02:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:02:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:02:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:02:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:02:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:02:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:02:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:02:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:02:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:02:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:02:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:02:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:02:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:02:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:02:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:02:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:14,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:02:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:02:15,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127740242] [2020-08-22 17:02:15,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343651825] [2020-08-22 17:02:15,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:02:15,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2020-08-22 17:02:15,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:02:15,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 83 conjunts are in the unsatisfiable core [2020-08-22 17:02:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:02:15,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:02:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-08-22 17:02:15,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:02:15,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-08-22 17:02:15,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952612624] [2020-08-22 17:02:15,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-08-22 17:02:15,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:02:15,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-08-22 17:02:15,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=1249, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 17:02:15,598 INFO L87 Difference]: Start difference. First operand 336 states and 358 transitions. Second operand 47 states. [2020-08-22 17:02:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:02:16,517 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2020-08-22 17:02:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 17:02:16,519 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 409 [2020-08-22 17:02:16,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:02:16,522 INFO L225 Difference]: With dead ends: 351 [2020-08-22 17:02:16,522 INFO L226 Difference]: Without dead ends: 349 [2020-08-22 17:02:16,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=919, Invalid=1337, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 17:02:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-22 17:02:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2020-08-22 17:02:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-22 17:02:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 371 transitions. [2020-08-22 17:02:16,541 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 371 transitions. Word has length 409 [2020-08-22 17:02:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:02:16,541 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 371 transitions. [2020-08-22 17:02:16,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-08-22 17:02:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 371 transitions. [2020-08-22 17:02:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-08-22 17:02:16,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:02:16,545 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:02:16,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:02:16,758 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:02:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:02:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash 524990848, now seen corresponding path program 60 times [2020-08-22 17:02:16,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:02:16,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665174377] [2020-08-22 17:02:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:02:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:02:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 17:02:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:02:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:02:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:02:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:02:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:02:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:02:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:02:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:02:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:02:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:02:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:02:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:02:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:02:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:02:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:02:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:02:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:02:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:02:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:02:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:02:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:02:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:02:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:02:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:02:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:02:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:02:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:02:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:02:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:02:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:02:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:02:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:02:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:02:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:02:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:02:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:02:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:02:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:02:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:02:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:02:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:02:23,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665174377] [2020-08-22 17:02:23,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878604220] [2020-08-22 17:02:23,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:02:23,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2020-08-22 17:02:23,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:02:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 85 conjunts are in the unsatisfiable core [2020-08-22 17:02:23,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:02:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:02:32,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:02:32,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 127 [2020-08-22 17:02:32,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17941166] [2020-08-22 17:02:32,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-08-22 17:02:32,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:02:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-08-22 17:02:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3696, Invalid=12306, Unknown=0, NotChecked=0, Total=16002 [2020-08-22 17:02:32,179 INFO L87 Difference]: Start difference. First operand 348 states and 371 transitions. Second operand 127 states. [2020-08-22 17:02:38,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:02:38,635 INFO L93 Difference]: Finished difference Result 691 states and 837 transitions. [2020-08-22 17:02:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-08-22 17:02:38,637 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 425 [2020-08-22 17:02:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:02:38,639 INFO L225 Difference]: With dead ends: 691 [2020-08-22 17:02:38,640 INFO L226 Difference]: Without dead ends: 514 [2020-08-22 17:02:38,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5861 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=7181, Invalid=20875, Unknown=0, NotChecked=0, Total=28056 [2020-08-22 17:02:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-08-22 17:02:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 350. [2020-08-22 17:02:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-08-22 17:02:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 373 transitions. [2020-08-22 17:02:38,656 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 373 transitions. Word has length 425 [2020-08-22 17:02:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:02:38,657 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 373 transitions. [2020-08-22 17:02:38,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-08-22 17:02:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 373 transitions. [2020-08-22 17:02:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-08-22 17:02:38,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:02:38,659 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:02:38,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-08-22 17:02:38,860 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:02:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:02:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2129659355, now seen corresponding path program 61 times [2020-08-22 17:02:38,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:02:38,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528830968] [2020-08-22 17:02:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:02:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:02:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 17:02:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 17:02:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 17:02:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:02:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:02:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:02:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:02:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:02:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:02:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:02:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:02:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:02:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:02:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:02:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:02:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:02:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:02:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:02:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:02:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:02:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:02:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:02:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:02:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:02:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:02:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:02:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:02:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:02:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:02:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:02:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:02:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-22 17:02:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 17:02:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-08-22 17:02:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 17:02:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-08-22 17:02:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-08-22 17:02:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-22 17:02:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-08-22 17:02:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-08-22 17:02:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-22 17:02:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:02:45,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528830968] [2020-08-22 17:02:45,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485413991] [2020-08-22 17:02:45,729 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:02:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:02:45,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 86 conjunts are in the unsatisfiable core [2020-08-22 17:02:45,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:02:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:02:54,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:02:54,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 128 [2020-08-22 17:02:54,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88493335] [2020-08-22 17:02:54,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2020-08-22 17:02:54,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:02:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2020-08-22 17:02:54,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3739, Invalid=12517, Unknown=0, NotChecked=0, Total=16256 [2020-08-22 17:02:54,310 INFO L87 Difference]: Start difference. First operand 350 states and 373 transitions. Second operand 128 states. [2020-08-22 17:03:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:03:00,368 INFO L93 Difference]: Finished difference Result 695 states and 844 transitions. [2020-08-22 17:03:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-08-22 17:03:00,368 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 427 [2020-08-22 17:03:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:03:00,371 INFO L225 Difference]: With dead ends: 695 [2020-08-22 17:03:00,371 INFO L226 Difference]: Without dead ends: 520 [2020-08-22 17:03:00,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5945 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=7393, Invalid=21337, Unknown=0, NotChecked=0, Total=28730 [2020-08-22 17:03:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-08-22 17:03:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 352. [2020-08-22 17:03:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-22 17:03:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 375 transitions. [2020-08-22 17:03:00,389 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 375 transitions. Word has length 427 [2020-08-22 17:03:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:03:00,390 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 375 transitions. [2020-08-22 17:03:00,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 128 states. [2020-08-22 17:03:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 375 transitions. [2020-08-22 17:03:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-08-22 17:03:00,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:03:00,392 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:03:00,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:03:00,593 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:03:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:03:00,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2037930614, now seen corresponding path program 62 times [2020-08-22 17:03:00,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:03:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322072117] [2020-08-22 17:03:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:03:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:03:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:03:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:03:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:03:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:03:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:03:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:03:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:03:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:03:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:03:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:03:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:03:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:03:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:03:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:03:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:03:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:03:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:03:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:03:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:03:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:03:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:03:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:03:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:03:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:03:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:03:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:03:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:03:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:03:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:03:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:03:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:03:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:03:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:03:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:03:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:03:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:03:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:03:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:03:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:03:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:03:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:03:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:03:02,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322072117] [2020-08-22 17:03:02,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928466715] [2020-08-22 17:03:02,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:03:03,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:03:03,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:03:03,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 87 conjunts are in the unsatisfiable core [2020-08-22 17:03:03,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:03:03,159 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:03:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-08-22 17:03:03,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:03:03,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-08-22 17:03:03,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322776490] [2020-08-22 17:03:03,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-08-22 17:03:03,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:03:03,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-08-22 17:03:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=1352, Unknown=0, NotChecked=0, Total=2352 [2020-08-22 17:03:03,382 INFO L87 Difference]: Start difference. First operand 352 states and 375 transitions. Second operand 49 states. [2020-08-22 17:03:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:03:04,306 INFO L93 Difference]: Finished difference Result 367 states and 391 transitions. [2020-08-22 17:03:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-22 17:03:04,308 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 429 [2020-08-22 17:03:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:03:04,311 INFO L225 Difference]: With dead ends: 367 [2020-08-22 17:03:04,311 INFO L226 Difference]: Without dead ends: 365 [2020-08-22 17:03:04,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1006, Invalid=1444, Unknown=0, NotChecked=0, Total=2450 [2020-08-22 17:03:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-22 17:03:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2020-08-22 17:03:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-08-22 17:03:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 388 transitions. [2020-08-22 17:03:04,325 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 388 transitions. Word has length 429 [2020-08-22 17:03:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:03:04,325 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 388 transitions. [2020-08-22 17:03:04,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-08-22 17:03:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 388 transitions. [2020-08-22 17:03:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-08-22 17:03:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:03:04,328 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:03:04,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-08-22 17:03:04,539 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:03:04,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:03:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash -99716244, now seen corresponding path program 63 times [2020-08-22 17:03:04,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:03:04,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831349772] [2020-08-22 17:03:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:03:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:03:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 17:03:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:03:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:03:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:03:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:03:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:03:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:03:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:03:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:03:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:03:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:03:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:03:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:03:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:03:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:03:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:03:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:03:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:03:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:03:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:03:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:03:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:03:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:03:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:03:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:03:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:03:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:03:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:03:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:03:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:03:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:03:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:03:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:03:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:03:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:03:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:03:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:03:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:03:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:03:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:03:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:03:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:03:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:03:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3784 proven. 1806 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831349772] [2020-08-22 17:03:10,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033646422] [2020-08-22 17:03:10,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 17:03:11,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2020-08-22 17:03:11,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:03:11,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 89 conjunts are in the unsatisfiable core [2020-08-22 17:03:11,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:03:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3784 proven. 1806 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:19,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:03:19,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 133 [2020-08-22 17:03:19,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889280570] [2020-08-22 17:03:19,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2020-08-22 17:03:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:03:19,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2020-08-22 17:03:19,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4048, Invalid=13508, Unknown=0, NotChecked=0, Total=17556 [2020-08-22 17:03:19,911 INFO L87 Difference]: Start difference. First operand 364 states and 388 transitions. Second operand 133 states. [2020-08-22 17:03:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:03:26,550 INFO L93 Difference]: Finished difference Result 723 states and 876 transitions. [2020-08-22 17:03:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-08-22 17:03:26,552 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 445 [2020-08-22 17:03:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:03:26,554 INFO L225 Difference]: With dead ends: 723 [2020-08-22 17:03:26,554 INFO L226 Difference]: Without dead ends: 538 [2020-08-22 17:03:26,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6448 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=7875, Invalid=22925, Unknown=0, NotChecked=0, Total=30800 [2020-08-22 17:03:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-08-22 17:03:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 366. [2020-08-22 17:03:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-08-22 17:03:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 390 transitions. [2020-08-22 17:03:26,570 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 390 transitions. Word has length 445 [2020-08-22 17:03:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:03:26,570 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 390 transitions. [2020-08-22 17:03:26,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 133 states. [2020-08-22 17:03:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 390 transitions. [2020-08-22 17:03:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-08-22 17:03:26,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:03:26,572 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:03:26,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:03:26,774 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:03:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:03:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash 592048017, now seen corresponding path program 64 times [2020-08-22 17:03:26,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:03:26,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159559752] [2020-08-22 17:03:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:03:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:03:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:03:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 17:03:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 17:03:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 17:03:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:03:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:03:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:03:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 17:03:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 17:03:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:03:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 17:03:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:03:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:03:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 17:03:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 17:03:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 17:03:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 17:03:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 17:03:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 17:03:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 17:03:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 17:03:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 17:03:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 17:03:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 17:03:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 17:03:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 17:03:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 17:03:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 17:03:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 17:03:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 17:03:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-22 17:03:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 17:03:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 17:03:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 17:03:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-22 17:03:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-08-22 17:03:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-08-22 17:03:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-08-22 17:03:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 17:03:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-08-22 17:03:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-08-22 17:03:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-08-22 17:03:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-08-22 17:03:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159559752] [2020-08-22 17:03:33,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324045193] [2020-08-22 17:03:33,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 17:03:34,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 17:03:34,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:03:34,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 90 conjunts are in the unsatisfiable core [2020-08-22 17:03:34,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:03:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:42,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:03:42,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 134 [2020-08-22 17:03:42,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554382583] [2020-08-22 17:03:42,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2020-08-22 17:03:42,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:03:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2020-08-22 17:03:42,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4093, Invalid=13729, Unknown=0, NotChecked=0, Total=17822 [2020-08-22 17:03:42,386 INFO L87 Difference]: Start difference. First operand 366 states and 390 transitions. Second operand 134 states. [2020-08-22 17:03:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:03:48,706 INFO L93 Difference]: Finished difference Result 727 states and 883 transitions. [2020-08-22 17:03:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-08-22 17:03:48,706 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 447 [2020-08-22 17:03:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:03:48,708 INFO L225 Difference]: With dead ends: 727 [2020-08-22 17:03:48,709 INFO L226 Difference]: Without dead ends: 544 [2020-08-22 17:03:48,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6536 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=8097, Invalid=23409, Unknown=0, NotChecked=0, Total=31506 [2020-08-22 17:03:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-22 17:03:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 368. [2020-08-22 17:03:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-22 17:03:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 392 transitions. [2020-08-22 17:03:48,723 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 392 transitions. Word has length 447 [2020-08-22 17:03:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:03:48,724 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 392 transitions. [2020-08-22 17:03:48,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 134 states. [2020-08-22 17:03:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 392 transitions. [2020-08-22 17:03:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-08-22 17:03:48,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:03:48,726 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:03:48,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-08-22 17:03:48,927 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:03:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:03:48,927 INFO L82 PathProgramCache]: Analyzing trace with hash -342428042, now seen corresponding path program 65 times [2020-08-22 17:03:48,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:03:48,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122390526] [2020-08-22 17:03:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:03:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:03:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:03:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:03:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:03:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:03:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:03:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:03:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:03:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:03:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:03:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:03:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:03:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:03:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:03:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:03:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:03:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:03:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:03:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:03:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:03:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:03:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:03:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:03:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:03:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:03:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:03:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:03:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:03:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:03:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:03:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:03:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:03:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:03:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:03:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:03:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:03:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:03:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:03:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:03:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:03:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:03:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:03:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:03:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:03:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:51,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122390526] [2020-08-22 17:03:51,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090728219] [2020-08-22 17:03:51,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:03:51,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2020-08-22 17:03:51,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:03:51,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 91 conjunts are in the unsatisfiable core [2020-08-22 17:03:51,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:03:51,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:03:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-08-22 17:03:51,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:03:51,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-08-22 17:03:51,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869251638] [2020-08-22 17:03:51,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-08-22 17:03:51,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:03:51,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-08-22 17:03:51,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=1459, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 17:03:51,882 INFO L87 Difference]: Start difference. First operand 368 states and 392 transitions. Second operand 51 states. [2020-08-22 17:03:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:03:52,973 INFO L93 Difference]: Finished difference Result 383 states and 408 transitions. [2020-08-22 17:03:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-22 17:03:52,975 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 449 [2020-08-22 17:03:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:03:52,978 INFO L225 Difference]: With dead ends: 383 [2020-08-22 17:03:52,978 INFO L226 Difference]: Without dead ends: 381 [2020-08-22 17:03:52,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1097, Invalid=1555, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 17:03:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-22 17:03:52,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2020-08-22 17:03:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-22 17:03:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 405 transitions. [2020-08-22 17:03:52,992 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 405 transitions. Word has length 449 [2020-08-22 17:03:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:03:52,992 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 405 transitions. [2020-08-22 17:03:52,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-08-22 17:03:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 405 transitions. [2020-08-22 17:03:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-08-22 17:03:52,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:03:52,995 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:03:53,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-08-22 17:03:53,196 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:03:53,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:03:53,196 INFO L82 PathProgramCache]: Analyzing trace with hash -753505192, now seen corresponding path program 66 times [2020-08-22 17:03:53,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:03:53,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116850776] [2020-08-22 17:03:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:03:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:03:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 17:03:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:03:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:03:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:03:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:03:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:03:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:03:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:03:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:03:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:03:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:03:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:03:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:03:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:03:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:03:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:03:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:03:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:03:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:03:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:03:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:03:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:03:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:03:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:03:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:03:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:03:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:03:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:03:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:03:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:03:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:03:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:03:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:03:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:03:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:03:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:03:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:03:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:03:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:03:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:03:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:03:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:03:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:03:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-08-22 17:03:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:03:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-22 17:03:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:00,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116850776] [2020-08-22 17:04:00,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155584019] [2020-08-22 17:04:00,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:04:00,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2020-08-22 17:04:00,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:04:00,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 93 conjunts are in the unsatisfiable core [2020-08-22 17:04:00,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:04:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:10,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:04:10,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 139 [2020-08-22 17:04:10,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98311075] [2020-08-22 17:04:10,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2020-08-22 17:04:10,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:04:10,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2020-08-22 17:04:10,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4416, Invalid=14766, Unknown=0, NotChecked=0, Total=19182 [2020-08-22 17:04:10,042 INFO L87 Difference]: Start difference. First operand 380 states and 405 transitions. Second operand 139 states. [2020-08-22 17:04:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:04:18,085 INFO L93 Difference]: Finished difference Result 755 states and 915 transitions. [2020-08-22 17:04:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-08-22 17:04:18,087 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 465 [2020-08-22 17:04:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:04:18,090 INFO L225 Difference]: With dead ends: 755 [2020-08-22 17:04:18,091 INFO L226 Difference]: Without dead ends: 562 [2020-08-22 17:04:18,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7063 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=8601, Invalid=25071, Unknown=0, NotChecked=0, Total=33672 [2020-08-22 17:04:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-22 17:04:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 382. [2020-08-22 17:04:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-08-22 17:04:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 407 transitions. [2020-08-22 17:04:18,108 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 407 transitions. Word has length 465 [2020-08-22 17:04:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:04:18,108 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 407 transitions. [2020-08-22 17:04:18,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 139 states. [2020-08-22 17:04:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 407 transitions. [2020-08-22 17:04:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-08-22 17:04:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:04:18,111 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:04:18,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-08-22 17:04:18,327 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:04:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:04:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash -103324675, now seen corresponding path program 67 times [2020-08-22 17:04:18,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:04:18,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964338129] [2020-08-22 17:04:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:04:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:04:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 17:04:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 17:04:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:04:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:04:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:04:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:04:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:04:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:04:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:04:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:04:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:04:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:04:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:04:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:04:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:04:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:04:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:04:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:04:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:04:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:04:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:04:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:04:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:04:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:04:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:04:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:04:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:04:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:04:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:04:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:04:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-22 17:04:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 17:04:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-08-22 17:04:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 17:04:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-08-22 17:04:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-08-22 17:04:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-22 17:04:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-08-22 17:04:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-08-22 17:04:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-22 17:04:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-08-22 17:04:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-08-22 17:04:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 17:04:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-08-22 17:04:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-08-22 17:04:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:26,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964338129] [2020-08-22 17:04:26,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018446255] [2020-08-22 17:04:26,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:04:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:26,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 94 conjunts are in the unsatisfiable core [2020-08-22 17:04:26,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:04:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:37,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:04:37,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 140 [2020-08-22 17:04:37,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426320065] [2020-08-22 17:04:37,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2020-08-22 17:04:37,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:04:37,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2020-08-22 17:04:37,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4463, Invalid=14997, Unknown=0, NotChecked=0, Total=19460 [2020-08-22 17:04:37,853 INFO L87 Difference]: Start difference. First operand 382 states and 407 transitions. Second operand 140 states. [2020-08-22 17:04:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:04:46,034 INFO L93 Difference]: Finished difference Result 759 states and 922 transitions. [2020-08-22 17:04:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-08-22 17:04:46,034 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 467 [2020-08-22 17:04:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:04:46,037 INFO L225 Difference]: With dead ends: 759 [2020-08-22 17:04:46,037 INFO L226 Difference]: Without dead ends: 568 [2020-08-22 17:04:46,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=8833, Invalid=25577, Unknown=0, NotChecked=0, Total=34410 [2020-08-22 17:04:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-22 17:04:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 384. [2020-08-22 17:04:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-08-22 17:04:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 409 transitions. [2020-08-22 17:04:46,055 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 409 transitions. Word has length 467 [2020-08-22 17:04:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:04:46,056 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 409 transitions. [2020-08-22 17:04:46,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 140 states. [2020-08-22 17:04:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 409 transitions. [2020-08-22 17:04:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-08-22 17:04:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:04:46,075 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:04:46,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:04:46,276 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:04:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:04:46,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894242, now seen corresponding path program 68 times [2020-08-22 17:04:46,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:04:46,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009007398] [2020-08-22 17:04:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:04:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:04:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:04:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:04:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:04:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:04:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:04:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:04:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:04:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:04:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:04:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:04:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:04:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:04:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:04:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:04:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:04:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:04:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:04:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:04:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:04:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:04:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:04:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:04:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:04:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:04:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:04:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:04:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:04:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:04:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:04:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:04:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:04:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:04:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:04:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:04:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:04:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:04:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:04:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:04:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:04:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:04:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:04:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:04:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-08-22 17:04:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-08-22 17:04:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 17:04:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:04:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:49,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009007398] [2020-08-22 17:04:49,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090480343] [2020-08-22 17:04:49,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:04:49,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:04:49,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:04:49,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 95 conjunts are in the unsatisfiable core [2020-08-22 17:04:49,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:04:49,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:04:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-08-22 17:04:50,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:04:50,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-08-22 17:04:50,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109573057] [2020-08-22 17:04:50,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-08-22 17:04:50,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:04:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-08-22 17:04:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=1570, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 17:04:50,099 INFO L87 Difference]: Start difference. First operand 384 states and 409 transitions. Second operand 53 states. [2020-08-22 17:04:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:04:51,586 INFO L93 Difference]: Finished difference Result 399 states and 425 transitions. [2020-08-22 17:04:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-22 17:04:51,589 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 469 [2020-08-22 17:04:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:04:51,592 INFO L225 Difference]: With dead ends: 399 [2020-08-22 17:04:51,592 INFO L226 Difference]: Without dead ends: 397 [2020-08-22 17:04:51,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1192, Invalid=1670, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 17:04:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-08-22 17:04:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 396. [2020-08-22 17:04:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-08-22 17:04:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 422 transitions. [2020-08-22 17:04:51,607 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 422 transitions. Word has length 469 [2020-08-22 17:04:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:04:51,607 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 422 transitions. [2020-08-22 17:04:51,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-08-22 17:04:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 422 transitions. [2020-08-22 17:04:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-08-22 17:04:51,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:04:51,610 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:04:51,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:04:51,811 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:04:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:04:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash 676537412, now seen corresponding path program 69 times [2020-08-22 17:04:51,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:04:51,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083161053] [2020-08-22 17:04:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:04:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:05:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 17:05:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:05:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:05:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:05:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:05:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:05:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:05:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:05:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:05:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:05:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:05:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:05:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:05:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:05:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:05:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:05:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:05:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:05:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:05:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:05:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:05:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:05:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:05:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:05:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:05:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:05:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:05:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:05:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:05:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:05:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:05:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:05:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:05:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:05:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:05:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:05:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:05:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:05:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:05:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:05:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:05:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:05:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-08-22 17:05:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-08-22 17:05:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 17:05:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-08-22 17:05:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-08-22 17:05:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4512 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:05:01,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083161053] [2020-08-22 17:05:01,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22594966] [2020-08-22 17:05:01,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 17:05:01,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2020-08-22 17:05:01,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:05:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 97 conjunts are in the unsatisfiable core [2020-08-22 17:05:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:05:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4512 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:05:14,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:05:14,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 145 [2020-08-22 17:05:14,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496556607] [2020-08-22 17:05:14,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2020-08-22 17:05:14,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:05:14,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2020-08-22 17:05:14,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4800, Invalid=16080, Unknown=0, NotChecked=0, Total=20880 [2020-08-22 17:05:14,023 INFO L87 Difference]: Start difference. First operand 396 states and 422 transitions. Second operand 145 states. [2020-08-22 17:05:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:05:23,279 INFO L93 Difference]: Finished difference Result 787 states and 954 transitions. [2020-08-22 17:05:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-08-22 17:05:23,281 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 485 [2020-08-22 17:05:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:05:23,285 INFO L225 Difference]: With dead ends: 787 [2020-08-22 17:05:23,285 INFO L226 Difference]: Without dead ends: 586 [2020-08-22 17:05:23,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7706 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=9359, Invalid=27313, Unknown=0, NotChecked=0, Total=36672 [2020-08-22 17:05:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-22 17:05:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 398. [2020-08-22 17:05:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-22 17:05:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 424 transitions. [2020-08-22 17:05:23,303 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 424 transitions. Word has length 485 [2020-08-22 17:05:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:05:23,303 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 424 transitions. [2020-08-22 17:05:23,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 145 states. [2020-08-22 17:05:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 424 transitions. [2020-08-22 17:05:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-08-22 17:05:23,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:05:23,306 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:05:23,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:05:23,509 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:05:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:05:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash 579393385, now seen corresponding path program 70 times [2020-08-22 17:05:23,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:05:23,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656789718] [2020-08-22 17:05:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:05:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:05:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 17:05:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 17:05:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 17:05:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:05:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:05:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:05:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 17:05:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 17:05:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:05:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 17:05:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:05:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:05:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 17:05:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 17:05:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 17:05:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 17:05:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 17:05:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 17:05:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 17:05:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 17:05:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 17:05:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 17:05:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 17:05:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 17:05:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 17:05:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 17:05:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 17:05:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 17:05:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 17:05:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-22 17:05:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 17:05:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 17:05:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 17:05:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-22 17:05:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-08-22 17:05:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-08-22 17:05:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-08-22 17:05:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 17:05:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-08-22 17:05:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-08-22 17:05:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-08-22 17:05:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-08-22 17:05:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-22 17:05:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-08-22 17:05:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-08-22 17:05:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-22 17:05:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 17:05:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:05:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:05:33,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656789718] [2020-08-22 17:05:33,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634403201] [2020-08-22 17:05:33,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 17:05:33,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 17:05:33,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:05:33,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 98 conjunts are in the unsatisfiable core [2020-08-22 17:05:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:05:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:05:47,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:05:47,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 146 [2020-08-22 17:05:47,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081368499] [2020-08-22 17:05:47,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2020-08-22 17:05:47,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:05:47,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2020-08-22 17:05:47,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4849, Invalid=16321, Unknown=0, NotChecked=0, Total=21170 [2020-08-22 17:05:47,094 INFO L87 Difference]: Start difference. First operand 398 states and 424 transitions. Second operand 146 states. [2020-08-22 17:05:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:05:56,858 INFO L93 Difference]: Finished difference Result 791 states and 961 transitions. [2020-08-22 17:05:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-08-22 17:05:56,859 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 487 [2020-08-22 17:05:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:05:56,861 INFO L225 Difference]: With dead ends: 791 [2020-08-22 17:05:56,861 INFO L226 Difference]: Without dead ends: 592 [2020-08-22 17:05:56,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7802 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2020-08-22 17:05:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-08-22 17:05:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 400. [2020-08-22 17:05:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-08-22 17:05:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 426 transitions. [2020-08-22 17:05:56,881 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 426 transitions. Word has length 487 [2020-08-22 17:05:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:05:56,882 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 426 transitions. [2020-08-22 17:05:56,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 146 states. [2020-08-22 17:05:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 426 transitions. [2020-08-22 17:05:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-08-22 17:05:56,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:05:56,885 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:05:57,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-08-22 17:05:57,087 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:05:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:05:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1713263950, now seen corresponding path program 71 times [2020-08-22 17:05:57,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:05:57,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73940529] [2020-08-22 17:05:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:05:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:06:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:06:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:06:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:06:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:06:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:06:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:06:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:06:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:06:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:06:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:06:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:06:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:06:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:06:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:06:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:06:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:06:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:06:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:06:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:06:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:06:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:06:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:06:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:06:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:06:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:06:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:06:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:06:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:06:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:06:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:06:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:06:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:06:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:06:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:06:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:06:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:06:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:06:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:06:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:06:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:06:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:06:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:06:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-08-22 17:06:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-22 17:06:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-08-22 17:06:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-08-22 17:06:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-08-22 17:06:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:06:00,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73940529] [2020-08-22 17:06:00,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311608338] [2020-08-22 17:06:00,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:06:01,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2020-08-22 17:06:01,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:06:01,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 99 conjunts are in the unsatisfiable core [2020-08-22 17:06:01,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:06:01,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:06:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-08-22 17:06:01,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:06:01,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-08-22 17:06:01,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047712890] [2020-08-22 17:06:01,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-08-22 17:06:01,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:06:01,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-08-22 17:06:01,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1285, Invalid=1685, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 17:06:01,546 INFO L87 Difference]: Start difference. First operand 400 states and 426 transitions. Second operand 55 states. [2020-08-22 17:06:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:06:03,216 INFO L93 Difference]: Finished difference Result 415 states and 442 transitions. [2020-08-22 17:06:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 17:06:03,219 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 489 [2020-08-22 17:06:03,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:06:03,222 INFO L225 Difference]: With dead ends: 415 [2020-08-22 17:06:03,222 INFO L226 Difference]: Without dead ends: 413 [2020-08-22 17:06:03,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1291, Invalid=1789, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 17:06:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-22 17:06:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2020-08-22 17:06:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-22 17:06:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 439 transitions. [2020-08-22 17:06:03,240 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 439 transitions. Word has length 489 [2020-08-22 17:06:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:06:03,241 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 439 transitions. [2020-08-22 17:06:03,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-08-22 17:06:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 439 transitions. [2020-08-22 17:06:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-08-22 17:06:03,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:06:03,243 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:06:03,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:06:03,444 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:06:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:06:03,445 INFO L82 PathProgramCache]: Analyzing trace with hash -831186128, now seen corresponding path program 72 times [2020-08-22 17:06:03,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:06:03,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041966703] [2020-08-22 17:06:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:06:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:06:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 17:06:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:06:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:06:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:06:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:06:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:06:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:06:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:06:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:06:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:06:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:06:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:06:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:06:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:06:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:06:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:06:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:06:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:06:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:06:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:06:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:06:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:06:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:06:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:06:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:06:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:06:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:06:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:06:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:06:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:06:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:06:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:06:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:06:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:06:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:06:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:06:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:06:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:06:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:06:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:06:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:06:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:06:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-08-22 17:06:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-22 17:06:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-08-22 17:06:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-08-22 17:06:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-08-22 17:06:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-08-22 17:06:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 17:06:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:06:14,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041966703] [2020-08-22 17:06:14,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619474047] [2020-08-22 17:06:14,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:06:14,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2020-08-22 17:06:14,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:06:14,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 101 conjunts are in the unsatisfiable core [2020-08-22 17:06:14,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:06:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:06:29,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:06:29,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 151 [2020-08-22 17:06:29,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458878973] [2020-08-22 17:06:29,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2020-08-22 17:06:29,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:06:29,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2020-08-22 17:06:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5200, Invalid=17450, Unknown=0, NotChecked=0, Total=22650 [2020-08-22 17:06:29,524 INFO L87 Difference]: Start difference. First operand 412 states and 439 transitions. Second operand 151 states. [2020-08-22 17:06:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:06:40,092 INFO L93 Difference]: Finished difference Result 819 states and 993 transitions. [2020-08-22 17:06:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-08-22 17:06:40,095 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 505 [2020-08-22 17:06:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:06:40,099 INFO L225 Difference]: With dead ends: 819 [2020-08-22 17:06:40,099 INFO L226 Difference]: Without dead ends: 610 [2020-08-22 17:06:40,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8377 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=10149, Invalid=29651, Unknown=0, NotChecked=0, Total=39800 [2020-08-22 17:06:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-22 17:06:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 414. [2020-08-22 17:06:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-22 17:06:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 441 transitions. [2020-08-22 17:06:40,117 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 441 transitions. Word has length 505 [2020-08-22 17:06:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:06:40,118 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 441 transitions. [2020-08-22 17:06:40,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 151 states. [2020-08-22 17:06:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 441 transitions. [2020-08-22 17:06:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-08-22 17:06:40,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:06:40,120 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:06:40,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:06:40,322 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:06:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:06:40,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1643039189, now seen corresponding path program 73 times [2020-08-22 17:06:40,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:06:40,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299627072] [2020-08-22 17:06:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:06:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:06:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 17:06:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:06:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:06:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:06:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:06:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:06:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:06:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:06:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:06:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:06:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:06:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:06:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:06:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:06:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:06:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:06:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:06:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:06:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:06:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:06:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:06:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:06:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:06:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:06:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:06:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:06:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:06:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:06:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:06:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-22 17:06:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 17:06:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-08-22 17:06:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 17:06:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-08-22 17:06:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-08-22 17:06:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-22 17:06:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-08-22 17:06:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-08-22 17:06:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-22 17:06:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-08-22 17:06:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-08-22 17:06:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 17:06:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-08-22 17:06:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-08-22 17:06:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-08-22 17:06:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-08-22 17:06:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-08-22 17:06:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-08-22 17:06:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-22 17:06:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:06:52,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299627072] [2020-08-22 17:06:52,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712313652] [2020-08-22 17:06:52,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:06:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:06:52,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 102 conjunts are in the unsatisfiable core [2020-08-22 17:06:52,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:07:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:07:08,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:07:08,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 152 [2020-08-22 17:07:08,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074499056] [2020-08-22 17:07:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2020-08-22 17:07:08,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:07:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2020-08-22 17:07:08,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5251, Invalid=17701, Unknown=0, NotChecked=0, Total=22952 [2020-08-22 17:07:08,123 INFO L87 Difference]: Start difference. First operand 414 states and 441 transitions. Second operand 152 states. [2020-08-22 17:07:19,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:07:19,900 INFO L93 Difference]: Finished difference Result 823 states and 1000 transitions. [2020-08-22 17:07:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-08-22 17:07:19,900 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 507 [2020-08-22 17:07:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:07:19,903 INFO L225 Difference]: With dead ends: 823 [2020-08-22 17:07:19,904 INFO L226 Difference]: Without dead ends: 616 [2020-08-22 17:07:19,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8477 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=10401, Invalid=30201, Unknown=0, NotChecked=0, Total=40602 [2020-08-22 17:07:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-08-22 17:07:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 416. [2020-08-22 17:07:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-22 17:07:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 443 transitions. [2020-08-22 17:07:19,931 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 443 transitions. Word has length 507 [2020-08-22 17:07:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:07:19,932 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 443 transitions. [2020-08-22 17:07:19,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 152 states. [2020-08-22 17:07:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 443 transitions. [2020-08-22 17:07:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-08-22 17:07:19,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:07:19,936 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:07:20,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:07:20,149 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:07:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:07:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash -38313158, now seen corresponding path program 74 times [2020-08-22 17:07:20,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:07:20,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097316724] [2020-08-22 17:07:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:07:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:07:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:07:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:07:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:07:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:07:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:07:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:07:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:07:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:07:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:07:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:07:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:07:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:07:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:07:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:07:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:07:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:07:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:07:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:07:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:07:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:07:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:07:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:07:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:07:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:07:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:07:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:07:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:07:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:07:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:07:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:07:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:07:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:07:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:07:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:07:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:07:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:07:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:07:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:07:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:07:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:07:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:07:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-08-22 17:07:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-08-22 17:07:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 17:07:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-08-22 17:07:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-08-22 17:07:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-22 17:07:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-08-22 17:07:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-08-22 17:07:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:07:24,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097316724] [2020-08-22 17:07:24,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580394083] [2020-08-22 17:07:24,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:07:24,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:07:24,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:07:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 103 conjunts are in the unsatisfiable core [2020-08-22 17:07:24,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:07:25,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:07:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-08-22 17:07:25,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:07:25,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-08-22 17:07:25,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661158491] [2020-08-22 17:07:25,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-08-22 17:07:25,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:07:25,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-08-22 17:07:25,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1388, Invalid=1804, Unknown=0, NotChecked=0, Total=3192 [2020-08-22 17:07:25,381 INFO L87 Difference]: Start difference. First operand 416 states and 443 transitions. Second operand 57 states. [2020-08-22 17:07:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:07:27,257 INFO L93 Difference]: Finished difference Result 431 states and 459 transitions. [2020-08-22 17:07:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-08-22 17:07:27,260 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 509 [2020-08-22 17:07:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:07:27,263 INFO L225 Difference]: With dead ends: 431 [2020-08-22 17:07:27,263 INFO L226 Difference]: Without dead ends: 429 [2020-08-22 17:07:27,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1394, Invalid=1912, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 17:07:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-22 17:07:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 428. [2020-08-22 17:07:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-22 17:07:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 456 transitions. [2020-08-22 17:07:27,284 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 456 transitions. Word has length 509 [2020-08-22 17:07:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:07:27,285 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 456 transitions. [2020-08-22 17:07:27,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-08-22 17:07:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 456 transitions. [2020-08-22 17:07:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-08-22 17:07:27,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:07:27,287 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:07:27,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-08-22 17:07:27,488 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:07:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:07:27,489 INFO L82 PathProgramCache]: Analyzing trace with hash 283955484, now seen corresponding path program 75 times [2020-08-22 17:07:27,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:07:27,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900056877] [2020-08-22 17:07:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:07:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:07:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 17:07:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:07:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:07:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:07:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:07:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:07:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:07:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:07:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:07:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:07:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:07:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:07:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:07:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:07:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:07:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:07:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:07:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:07:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:07:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:07:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:07:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:07:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:07:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:07:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:07:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:07:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:07:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:07:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:07:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:07:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:07:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:07:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:07:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:07:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:07:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:07:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:07:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:07:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:07:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:07:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:07:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-08-22 17:07:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-08-22 17:07:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 17:07:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-08-22 17:07:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-08-22 17:07:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-22 17:07:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-08-22 17:07:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-08-22 17:07:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-22 17:07:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-08-22 17:07:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:07:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5304 proven. 2550 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:07:40,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900056877] [2020-08-22 17:07:40,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268862220] [2020-08-22 17:07:40,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-08-22 17:07:40,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2020-08-22 17:07:40,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:07:40,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 105 conjunts are in the unsatisfiable core [2020-08-22 17:07:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:07:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5304 proven. 2550 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:07:58,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:07:58,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 157 [2020-08-22 17:07:58,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214970490] [2020-08-22 17:07:58,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2020-08-22 17:07:58,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:07:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2020-08-22 17:07:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5616, Invalid=18876, Unknown=0, NotChecked=0, Total=24492 [2020-08-22 17:07:58,276 INFO L87 Difference]: Start difference. First operand 428 states and 456 transitions. Second operand 157 states. [2020-08-22 17:08:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:08:11,897 INFO L93 Difference]: Finished difference Result 851 states and 1032 transitions. [2020-08-22 17:08:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-08-22 17:08:11,900 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 525 [2020-08-22 17:08:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:08:11,903 INFO L225 Difference]: With dead ends: 851 [2020-08-22 17:08:11,903 INFO L226 Difference]: Without dead ends: 634 [2020-08-22 17:08:11,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9076 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=10971, Invalid=32085, Unknown=0, NotChecked=0, Total=43056 [2020-08-22 17:08:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-08-22 17:08:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 430. [2020-08-22 17:08:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-08-22 17:08:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 458 transitions. [2020-08-22 17:08:11,926 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 458 transitions. Word has length 525 [2020-08-22 17:08:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:08:11,926 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 458 transitions. [2020-08-22 17:08:11,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 157 states. [2020-08-22 17:08:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 458 transitions. [2020-08-22 17:08:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-08-22 17:08:11,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:08:11,929 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:08:12,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:08:12,130 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:08:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:08:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1129954113, now seen corresponding path program 76 times [2020-08-22 17:08:12,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:08:12,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585312752] [2020-08-22 17:08:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:08:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:08:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 17:08:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 17:08:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:08:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:08:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 17:08:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 17:08:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 17:08:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:08:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 17:08:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 17:08:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:08:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 17:08:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 17:08:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 17:08:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 17:08:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 17:08:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-22 17:08:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 17:08:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-22 17:08:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-22 17:08:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 17:08:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-08-22 17:08:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-22 17:08:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-22 17:08:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-08-22 17:08:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-08-22 17:08:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-08-22 17:08:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-08-22 17:08:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-22 17:08:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-08-22 17:08:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-08-22 17:08:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-22 17:08:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-22 17:08:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-08-22 17:08:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-08-22 17:08:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-08-22 17:08:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-08-22 17:08:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-08-22 17:08:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-08-22 17:08:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-08-22 17:08:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-08-22 17:08:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-22 17:08:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-08-22 17:08:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-08-22 17:08:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-22 17:08:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-08-22 17:08:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-08-22 17:08:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-22 17:08:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-08-22 17:08:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-08-22 17:08:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-08-22 17:08:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:08:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:08:25,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585312752] [2020-08-22 17:08:25,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24708288] [2020-08-22 17:08:25,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-08-22 17:08:26,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-08-22 17:08:26,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:08:26,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 106 conjunts are in the unsatisfiable core [2020-08-22 17:08:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:08:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:08:45,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:08:45,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 158 [2020-08-22 17:08:45,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450334591] [2020-08-22 17:08:45,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2020-08-22 17:08:45,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:08:45,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2020-08-22 17:08:45,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5669, Invalid=19137, Unknown=0, NotChecked=0, Total=24806 [2020-08-22 17:08:45,052 INFO L87 Difference]: Start difference. First operand 430 states and 458 transitions. Second operand 158 states. [2020-08-22 17:08:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:08:59,351 INFO L93 Difference]: Finished difference Result 855 states and 1039 transitions. [2020-08-22 17:08:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-08-22 17:08:59,351 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 527 [2020-08-22 17:08:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:08:59,354 INFO L225 Difference]: With dead ends: 855 [2020-08-22 17:08:59,354 INFO L226 Difference]: Without dead ends: 640 [2020-08-22 17:08:59,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9180 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=11233, Invalid=32657, Unknown=0, NotChecked=0, Total=43890 [2020-08-22 17:08:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-08-22 17:08:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 432. [2020-08-22 17:08:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-08-22 17:08:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 460 transitions. [2020-08-22 17:08:59,384 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 460 transitions. Word has length 527 [2020-08-22 17:08:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:08:59,384 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 460 transitions. [2020-08-22 17:08:59,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 158 states. [2020-08-22 17:08:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 460 transitions. [2020-08-22 17:08:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-08-22 17:08:59,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:08:59,388 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:08:59,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:08:59,602 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:08:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:08:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1909149658, now seen corresponding path program 77 times [2020-08-22 17:08:59,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:08:59,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456934857] [2020-08-22 17:08:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:08:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:09:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:09:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:09:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:09:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:09:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:09:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:09:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:09:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:09:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:09:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:09:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:09:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:09:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:09:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:09:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:09:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:09:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:09:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:09:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:09:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:09:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:09:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:09:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:09:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:09:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:09:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:09:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:09:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:09:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:09:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:09:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:09:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:09:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:09:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:09:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:09:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:09:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:09:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:09:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:09:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:09:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:09:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-08-22 17:09:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-22 17:09:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-08-22 17:09:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-08-22 17:09:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-08-22 17:09:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-08-22 17:09:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 17:09:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-08-22 17:09:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-22 17:09:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-08-22 17:09:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:09:04,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456934857] [2020-08-22 17:09:04,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369491815] [2020-08-22 17:09:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-08-22 17:09:05,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2020-08-22 17:09:05,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:09:05,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 107 conjunts are in the unsatisfiable core [2020-08-22 17:09:05,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:09:05,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:09:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-08-22 17:09:05,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:09:05,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-08-22 17:09:05,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741371769] [2020-08-22 17:09:05,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-08-22 17:09:05,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:09:05,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-08-22 17:09:05,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1495, Invalid=1927, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 17:09:05,714 INFO L87 Difference]: Start difference. First operand 432 states and 460 transitions. Second operand 59 states. [2020-08-22 17:09:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:09:07,607 INFO L93 Difference]: Finished difference Result 447 states and 476 transitions. [2020-08-22 17:09:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-08-22 17:09:07,611 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 529 [2020-08-22 17:09:07,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:09:07,614 INFO L225 Difference]: With dead ends: 447 [2020-08-22 17:09:07,615 INFO L226 Difference]: Without dead ends: 445 [2020-08-22 17:09:07,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1501, Invalid=2039, Unknown=0, NotChecked=0, Total=3540 [2020-08-22 17:09:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-22 17:09:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 444. [2020-08-22 17:09:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-22 17:09:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 473 transitions. [2020-08-22 17:09:07,636 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 473 transitions. Word has length 529 [2020-08-22 17:09:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:09:07,636 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 473 transitions. [2020-08-22 17:09:07,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-08-22 17:09:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 473 transitions. [2020-08-22 17:09:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-08-22 17:09:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:09:07,641 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:09:07,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-08-22 17:09:07,856 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:09:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:09:07,856 INFO L82 PathProgramCache]: Analyzing trace with hash -773143032, now seen corresponding path program 78 times [2020-08-22 17:09:07,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:09:07,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62528723] [2020-08-22 17:09:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:09:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:09:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 17:09:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:09:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:09:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:09:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:09:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 17:09:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 17:09:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 17:09:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:09:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 17:09:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 17:09:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:09:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-08-22 17:09:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-22 17:09:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 17:09:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 17:09:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-22 17:09:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-22 17:09:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 17:09:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 17:09:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-22 17:09:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-08-22 17:09:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-22 17:09:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-22 17:09:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-08-22 17:09:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-08-22 17:09:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-22 17:09:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-08-22 17:09:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-08-22 17:09:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-08-22 17:09:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-22 17:09:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-08-22 17:09:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-08-22 17:09:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-08-22 17:09:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-08-22 17:09:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-08-22 17:09:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-22 17:09:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-08-22 17:09:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-08-22 17:09:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-22 17:09:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-08-22 17:09:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-08-22 17:09:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-22 17:09:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-08-22 17:09:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-08-22 17:09:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-08-22 17:09:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-08-22 17:09:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-08-22 17:09:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-08-22 17:09:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-22 17:09:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-08-22 17:09:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-08-22 17:09:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-22 17:09:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:09:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5724 proven. 2756 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 17:09:22,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62528723] [2020-08-22 17:09:22,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675791315] [2020-08-22 17:09:22,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-08-22 17:09:23,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 54 check-sat command(s) [2020-08-22 17:09:23,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:09:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 109 conjunts are in the unsatisfiable core [2020-08-22 17:09:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:09:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5724 proven. 2756 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 17:09:44,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:09:44,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 163 [2020-08-22 17:09:44,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307872729] [2020-08-22 17:09:44,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2020-08-22 17:09:44,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:09:44,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2020-08-22 17:09:44,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6048, Invalid=20358, Unknown=0, NotChecked=0, Total=26406 [2020-08-22 17:09:44,668 INFO L87 Difference]: Start difference. First operand 444 states and 473 transitions. Second operand 163 states. [2020-08-22 17:09:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:09:59,950 INFO L93 Difference]: Finished difference Result 883 states and 1071 transitions. [2020-08-22 17:09:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-08-22 17:09:59,954 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 545 [2020-08-22 17:09:59,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:09:59,957 INFO L225 Difference]: With dead ends: 883 [2020-08-22 17:09:59,957 INFO L226 Difference]: Without dead ends: 658 [2020-08-22 17:09:59,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9803 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=11825, Invalid=34615, Unknown=0, NotChecked=0, Total=46440 [2020-08-22 17:09:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-08-22 17:09:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 446. [2020-08-22 17:09:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-08-22 17:09:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 475 transitions. [2020-08-22 17:09:59,979 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 475 transitions. Word has length 545 [2020-08-22 17:09:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:09:59,980 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 475 transitions. [2020-08-22 17:09:59,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 163 states. [2020-08-22 17:09:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 475 transitions. [2020-08-22 17:09:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-08-22 17:09:59,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:09:59,982 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:10:00,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:10:00,183 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:10:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:10:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash 953822125, now seen corresponding path program 79 times [2020-08-22 17:10:00,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:10:00,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056315916] [2020-08-22 17:10:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:10:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:10:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 17:10:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:10:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 17:10:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 17:10:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 17:10:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 17:10:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 17:10:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 17:10:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-08-22 17:10:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 17:10:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:10:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 17:10:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 17:10:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-22 17:10:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 17:10:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 17:10:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 17:10:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-22 17:10:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-22 17:10:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 17:10:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-22 17:10:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-22 17:10:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-08-22 17:10:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-08-22 17:10:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-22 17:10:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-22 17:10:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-08-22 17:10:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-08-22 17:10:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-22 17:10:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-08-22 17:10:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-08-22 17:10:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-22 17:10:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-08-22 17:10:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-08-22 17:10:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-22 17:10:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-08-22 17:10:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-08-22 17:10:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-22 17:10:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-08-22 17:10:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-08-22 17:10:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-08-22 17:10:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-08-22 17:10:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-08-22 17:10:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-08-22 17:10:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-08-22 17:10:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-08-22 17:10:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-08-22 17:10:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-22 17:10:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-08-22 17:10:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-08-22 17:10:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-22 17:10:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-08-22 17:10:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-08-22 17:10:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 17:10:16,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056315916] [2020-08-22 17:10:16,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034125499] [2020-08-22 17:10:16,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-08-22 17:10:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:10:16,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 110 conjunts are in the unsatisfiable core [2020-08-22 17:10:16,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:10:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 17:10:38,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 17:10:38,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 164 [2020-08-22 17:10:38,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923536636] [2020-08-22 17:10:38,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2020-08-22 17:10:38,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:10:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2020-08-22 17:10:38,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6103, Invalid=20629, Unknown=0, NotChecked=0, Total=26732 [2020-08-22 17:10:38,499 INFO L87 Difference]: Start difference. First operand 446 states and 475 transitions. Second operand 164 states. [2020-08-22 17:10:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:10:54,708 INFO L93 Difference]: Finished difference Result 887 states and 1078 transitions. [2020-08-22 17:10:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-08-22 17:10:54,708 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 547 [2020-08-22 17:10:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:10:54,711 INFO L225 Difference]: With dead ends: 887 [2020-08-22 17:10:54,712 INFO L226 Difference]: Without dead ends: 664 [2020-08-22 17:10:54,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9911 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=12097, Invalid=35209, Unknown=0, NotChecked=0, Total=47306 [2020-08-22 17:10:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-08-22 17:10:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 448. [2020-08-22 17:10:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-22 17:10:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 477 transitions. [2020-08-22 17:10:54,740 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 477 transitions. Word has length 547 [2020-08-22 17:10:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:10:54,740 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 477 transitions. [2020-08-22 17:10:54,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 164 states. [2020-08-22 17:10:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 477 transitions. [2020-08-22 17:10:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-08-22 17:10:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:10:54,743 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:10:54,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 17:10:54,944 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:10:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:10:54,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1585005550, now seen corresponding path program 80 times [2020-08-22 17:10:54,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 17:10:54,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143871642] [2020-08-22 17:10:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:10:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:11:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:11:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:11:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:11:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 17:11:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 17:11:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 17:11:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 17:11:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-22 17:11:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 17:11:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 17:11:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 17:11:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:11:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 17:11:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 17:11:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 17:11:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 17:11:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-22 17:11:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 17:11:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 17:11:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-22 17:11:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-08-22 17:11:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-08-22 17:11:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-08-22 17:11:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-22 17:11:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-08-22 17:11:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-08-22 17:11:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-22 17:11:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-08-22 17:11:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-08-22 17:11:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-22 17:11:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-08-22 17:11:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-08-22 17:11:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-22 17:11:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-08-22 17:11:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-08-22 17:11:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-22 17:11:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-08-22 17:11:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-08-22 17:11:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-08-22 17:11:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-08-22 17:11:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-08-22 17:11:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-08-22 17:11:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-22 17:11:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-08-22 17:11:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-08-22 17:11:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-22 17:11:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-08-22 17:11:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-08-22 17:11:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-22 17:11:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-08-22 17:11:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-08-22 17:11:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-08-22 17:11:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-08-22 17:11:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:11:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 3076 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-08-22 17:11:00,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143871642] [2020-08-22 17:11:00,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670105904] [2020-08-22 17:11:00,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-08-22 17:11:01,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 17:11:01,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 17:11:01,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 111 conjunts are in the unsatisfiable core [2020-08-22 17:11:01,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 17:11:01,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts