/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 0.1.25-86f66a4 [2020-07-07 11:33:32,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:32,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:32,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:32,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:32,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:32,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:32,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:32,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:32,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:32,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:32,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:32,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:32,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:32,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:32,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:32,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:32,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:32,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:32,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:32,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:32,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:32,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:32,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:32,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:32,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:33:32,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:32,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:32,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:32,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:32,164 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:32,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:32,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:32,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:32,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:32,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:32,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:32,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:32,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:32,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:32,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:32,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:32,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:32,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:32,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:32,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:32,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:32,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:32,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:32,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:32,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:32,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:32,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:32,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:32,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:32,495 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:32,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-07 11:33:32,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c63976d/b8aa1259375146d2af862acce53d255a/FLAGb4f26defe [2020-07-07 11:33:33,041 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:33,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-07 11:33:33,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c63976d/b8aa1259375146d2af862acce53d255a/FLAGb4f26defe [2020-07-07 11:33:33,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c63976d/b8aa1259375146d2af862acce53d255a [2020-07-07 11:33:33,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:33,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:33,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:33,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:33,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:33,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24aa15b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33, skipping insertion in model container [2020-07-07 11:33:33,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:33,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:33,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:33,608 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:33,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:33,648 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:33,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33 WrapperNode [2020-07-07 11:33:33,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:33,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:33,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:33,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:33,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... [2020-07-07 11:33:33,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:33,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:33,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:33,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:33,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:34,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:34,074 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:33:34,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:34 BoogieIcfgContainer [2020-07-07 11:33:34,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:34,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:34,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:34,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:34,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:33" (1/3) ... [2020-07-07 11:33:34,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f7ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:34, skipping insertion in model container [2020-07-07 11:33:34,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:33" (2/3) ... [2020-07-07 11:33:34,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f7ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:34, skipping insertion in model container [2020-07-07 11:33:34,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:34" (3/3) ... [2020-07-07 11:33:34,095 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-07-07 11:33:34,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:34,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:34,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:34,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:34,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:34,169 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:34,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:34,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:34,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:34,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:34,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-07 11:33:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 11:33:34,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:34,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:34,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash 317368997, now seen corresponding path program 1 times [2020-07-07 11:33:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:34,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700621828] [2020-07-07 11:33:34,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:34,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700621828] [2020-07-07 11:33:34,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:34,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:33:34,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190545805] [2020-07-07 11:33:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:33:34,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:34,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:33:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:33:34,363 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-07 11:33:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:34,385 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2020-07-07 11:33:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:33:34,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-07 11:33:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:34,394 INFO L225 Difference]: With dead ends: 47 [2020-07-07 11:33:34,394 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:33:34,397 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 [2020-07-07 11:33:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:33:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-07 11:33:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 11:33:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-07-07 11:33:34,435 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-07-07 11:33:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:34,435 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-07-07 11:33:34,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:33:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-07-07 11:33:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:33:34,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:34,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:34,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:34,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:34,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1632722591, now seen corresponding path program 1 times [2020-07-07 11:33:34,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:34,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260545270] [2020-07-07 11:33:34,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:34,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260545270] [2020-07-07 11:33:34,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:34,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:34,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321525440] [2020-07-07 11:33:34,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:34,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:34,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:34,603 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-07-07 11:33:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:34,666 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-07-07 11:33:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:34,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-07 11:33:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:34,668 INFO L225 Difference]: With dead ends: 31 [2020-07-07 11:33:34,668 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:33:34,669 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 [2020-07-07 11:33:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:33:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-07-07 11:33:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-07 11:33:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-07 11:33:34,687 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-07-07 11:33:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:34,688 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-07 11:33:34,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-07 11:33:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:33:34,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:34,690 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] [2020-07-07 11:33:34,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:33:34,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1401298672, now seen corresponding path program 1 times [2020-07-07 11:33:34,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:34,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885261136] [2020-07-07 11:33:34,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:34,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885261136] [2020-07-07 11:33:34,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:34,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:34,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548293510] [2020-07-07 11:33:34,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:34,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:34,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:34,821 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-07-07 11:33:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:34,909 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-07 11:33:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:34,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-07 11:33:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:34,914 INFO L225 Difference]: With dead ends: 49 [2020-07-07 11:33:34,914 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 11:33:34,915 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 [2020-07-07 11:33:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 11:33:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-07-07 11:33:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:33:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-07 11:33:34,928 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-07 11:33:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:34,928 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-07 11:33:34,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-07 11:33:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:33:34,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:34,930 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] [2020-07-07 11:33:34,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:33:34,930 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1107622837, now seen corresponding path program 1 times [2020-07-07 11:33:34,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:34,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935576281] [2020-07-07 11:33:34,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:35,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935576281] [2020-07-07 11:33:35,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135284499] [2020-07-07 11:33:35,030 INFO L94 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 [2020-07-07 11:33:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:33:35,088 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:35,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:35,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-07 11:33:35,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777471681] [2020-07-07 11:33:35,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:35,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:35,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:35,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:35,189 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-07-07 11:33:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:35,365 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-07 11:33:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:35,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-07 11:33:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:35,369 INFO L225 Difference]: With dead ends: 55 [2020-07-07 11:33:35,369 INFO L226 Difference]: Without dead ends: 40 [2020-07-07 11:33:35,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-07 11:33:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2020-07-07 11:33:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:33:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-07 11:33:35,387 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-07-07 11:33:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:35,387 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-07 11:33:35,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-07 11:33:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 11:33:35,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:35,389 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] [2020-07-07 11:33:35,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:35,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1590427366, now seen corresponding path program 2 times [2020-07-07 11:33:35,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:35,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905317802] [2020-07-07 11:33:35,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:35,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905317802] [2020-07-07 11:33:35,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3531145] [2020-07-07 11:33:35,743 INFO L92 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 [2020-07-07 11:33:35,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:35,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:35,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:33:35,780 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:35,796 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:35,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:35,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-07 11:33:35,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114272202] [2020-07-07 11:33:35,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:33:35,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:33:35,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:33:35,823 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-07-07 11:33:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:35,895 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-07-07 11:33:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:35,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-07 11:33:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:35,897 INFO L225 Difference]: With dead ends: 47 [2020-07-07 11:33:35,897 INFO L226 Difference]: Without dead ends: 45 [2020-07-07 11:33:35,898 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 [2020-07-07 11:33:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-07 11:33:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-07-07 11:33:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-07 11:33:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-07 11:33:35,907 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2020-07-07 11:33:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:35,907 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-07 11:33:35,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:33:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-07 11:33:35,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-07 11:33:35,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:35,910 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] [2020-07-07 11:33:36,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:36,125 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash -30298372, now seen corresponding path program 3 times [2020-07-07 11:33:36,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:36,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811658283] [2020-07-07 11:33:36,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:36,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811658283] [2020-07-07 11:33:36,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149090245] [2020-07-07 11:33:36,233 INFO L92 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 [2020-07-07 11:33:36,277 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-07-07 11:33:36,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:36,279 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:33:36,282 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:36,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:36,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-07-07 11:33:36,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251818134] [2020-07-07 11:33:36,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:33:36,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:36,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:33:36,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:33:36,363 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 13 states. [2020-07-07 11:33:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:36,488 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2020-07-07 11:33:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:36,488 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-07-07 11:33:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:36,491 INFO L225 Difference]: With dead ends: 83 [2020-07-07 11:33:36,491 INFO L226 Difference]: Without dead ends: 58 [2020-07-07 11:33:36,492 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 [2020-07-07 11:33:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-07 11:33:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-07-07 11:33:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-07 11:33:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-07 11:33:36,501 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2020-07-07 11:33:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:36,502 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-07 11:33:36,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:33:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-07 11:33:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-07 11:33:36,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:36,504 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] [2020-07-07 11:33:36,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:36,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:36,709 INFO L82 PathProgramCache]: Analyzing trace with hash 130155809, now seen corresponding path program 4 times [2020-07-07 11:33:36,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:36,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481579663] [2020-07-07 11:33:36,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:36,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481579663] [2020-07-07 11:33:36,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659896616] [2020-07-07 11:33:36,866 INFO L92 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 [2020-07-07 11:33:36,904 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:33:36,905 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:36,906 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:33:36,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:37,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:37,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2020-07-07 11:33:37,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610743209] [2020-07-07 11:33:37,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:33:37,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:33:37,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:33:37,008 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 14 states. [2020-07-07 11:33:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:37,172 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-07-07 11:33:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:33:37,172 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-07-07 11:33:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:37,177 INFO L225 Difference]: With dead ends: 87 [2020-07-07 11:33:37,177 INFO L226 Difference]: Without dead ends: 64 [2020-07-07 11:33:37,178 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 [2020-07-07 11:33:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-07 11:33:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-07 11:33:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-07 11:33:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-07 11:33:37,193 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 47 [2020-07-07 11:33:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:37,193 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-07 11:33:37,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:33:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-07 11:33:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-07 11:33:37,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:37,196 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] [2020-07-07 11:33:37,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:37,411 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash -292198906, now seen corresponding path program 5 times [2020-07-07 11:33:37,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:37,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065581625] [2020-07-07 11:33:37,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:37,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065581625] [2020-07-07 11:33:37,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69487957] [2020-07-07 11:33:37,514 INFO L92 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 [2020-07-07 11:33:37,559 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-07-07 11:33:37,559 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:37,560 INFO L264 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-07 11:33:37,570 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:37,596 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-07 11:33:37,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:37,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-07 11:33:37,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930004322] [2020-07-07 11:33:37,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 11:33:37,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 11:33:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:37,629 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 11 states. [2020-07-07 11:33:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:37,744 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-07 11:33:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:33:37,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-07-07 11:33:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:37,747 INFO L225 Difference]: With dead ends: 63 [2020-07-07 11:33:37,747 INFO L226 Difference]: Without dead ends: 61 [2020-07-07 11:33:37,749 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 [2020-07-07 11:33:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-07 11:33:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-07 11:33:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 11:33:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-07-07 11:33:37,766 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2020-07-07 11:33:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:37,767 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-07-07 11:33:37,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 11:33:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-07-07 11:33:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-07 11:33:37,772 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:37,772 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] [2020-07-07 11:33:37,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:37,989 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:37,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:37,990 INFO L82 PathProgramCache]: Analyzing trace with hash 551795688, now seen corresponding path program 6 times [2020-07-07 11:33:37,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:37,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536677190] [2020-07-07 11:33:37,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:38,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536677190] [2020-07-07 11:33:38,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502786476] [2020-07-07 11:33:38,125 INFO L92 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 [2020-07-07 11:33:38,184 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-07-07 11:33:38,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:38,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-07 11:33:38,188 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:38,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:38,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-07-07 11:33:38,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449825050] [2020-07-07 11:33:38,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:33:38,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:38,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:33:38,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:38,364 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 19 states. [2020-07-07 11:33:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:38,572 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2020-07-07 11:33:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:33:38,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-07-07 11:33:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:38,574 INFO L225 Difference]: With dead ends: 115 [2020-07-07 11:33:38,574 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 11:33:38,575 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 [2020-07-07 11:33:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 11:33:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2020-07-07 11:33:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 11:33:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-07-07 11:33:38,584 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 65 [2020-07-07 11:33:38,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:38,584 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-07-07 11:33:38,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:33:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-07-07 11:33:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-07 11:33:38,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:38,586 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] [2020-07-07 11:33:38,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:38,802 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:38,802 INFO L82 PathProgramCache]: Analyzing trace with hash -150434419, now seen corresponding path program 7 times [2020-07-07 11:33:38,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:38,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232814123] [2020-07-07 11:33:38,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:39,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232814123] [2020-07-07 11:33:39,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385085041] [2020-07-07 11:33:39,009 INFO L92 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 [2020-07-07 11:33:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:33:39,052 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:39,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:39,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-07-07 11:33:39,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457225690] [2020-07-07 11:33:39,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 11:33:39,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 11:33:39,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-07-07 11:33:39,188 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 20 states. [2020-07-07 11:33:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:39,474 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2020-07-07 11:33:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 11:33:39,475 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-07-07 11:33:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:39,476 INFO L225 Difference]: With dead ends: 119 [2020-07-07 11:33:39,476 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 11:33:39,477 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 [2020-07-07 11:33:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 11:33:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2020-07-07 11:33:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-07 11:33:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-07-07 11:33:39,485 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 67 [2020-07-07 11:33:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:39,485 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-07-07 11:33:39,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 11:33:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-07-07 11:33:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-07 11:33:39,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:39,486 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] [2020-07-07 11:33:39,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 11:33:39,698 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -683701774, now seen corresponding path program 8 times [2020-07-07 11:33:39,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:39,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640743914] [2020-07-07 11:33:39,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:39,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640743914] [2020-07-07 11:33:39,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057995049] [2020-07-07 11:33:39,867 INFO L92 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 [2020-07-07 11:33:39,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:39,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:39,922 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-07 11:33:39,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:39,938 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-07 11:33:39,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:39,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-07 11:33:39,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544514104] [2020-07-07 11:33:39,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:33:39,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:33:39,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:33:39,967 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 13 states. [2020-07-07 11:33:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:40,055 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-07-07 11:33:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:33:40,055 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-07-07 11:33:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:40,057 INFO L225 Difference]: With dead ends: 79 [2020-07-07 11:33:40,057 INFO L226 Difference]: Without dead ends: 77 [2020-07-07 11:33:40,058 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 [2020-07-07 11:33:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-07 11:33:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-07-07 11:33:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 11:33:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-07 11:33:40,066 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 69 [2020-07-07 11:33:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:40,066 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-07 11:33:40,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:33:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-07 11:33:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-07 11:33:40,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:40,068 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] [2020-07-07 11:33:40,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-07-07 11:33:40,283 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash 192972756, now seen corresponding path program 9 times [2020-07-07 11:33:40,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:40,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550817355] [2020-07-07 11:33:40,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 112 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:40,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550817355] [2020-07-07 11:33:40,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744142979] [2020-07-07 11:33:40,477 INFO L92 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 [2020-07-07 11:33:40,548 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-07-07 11:33:40,548 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:40,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-07 11:33:40,552 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 112 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:40,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:40,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2020-07-07 11:33:40,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793659863] [2020-07-07 11:33:40,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 11:33:40,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:40,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 11:33:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-07-07 11:33:40,885 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 25 states. [2020-07-07 11:33:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:41,138 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-07-07 11:33:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:33:41,139 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 85 [2020-07-07 11:33:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:41,141 INFO L225 Difference]: With dead ends: 147 [2020-07-07 11:33:41,141 INFO L226 Difference]: Without dead ends: 106 [2020-07-07 11:33:41,142 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 [2020-07-07 11:33:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-07 11:33:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2020-07-07 11:33:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-07 11:33:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-07-07 11:33:41,161 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 85 [2020-07-07 11:33:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:41,161 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-07-07 11:33:41,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 11:33:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-07-07 11:33:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-07 11:33:41,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:41,163 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] [2020-07-07 11:33:41,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:41,364 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:41,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:41,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1722356985, now seen corresponding path program 10 times [2020-07-07 11:33:41,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:41,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709185515] [2020-07-07 11:33:41,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:41,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709185515] [2020-07-07 11:33:41,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686363777] [2020-07-07 11:33:41,583 INFO L92 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 [2020-07-07 11:33:41,648 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:33:41,648 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:41,649 INFO L264 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:33:41,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 112 proven. 56 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:41,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:41,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2020-07-07 11:33:41,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192429212] [2020-07-07 11:33:41,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 11:33:41,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:41,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 11:33:41,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-07-07 11:33:41,943 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 26 states. [2020-07-07 11:33:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:42,267 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2020-07-07 11:33:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 11:33:42,267 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 87 [2020-07-07 11:33:42,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:42,269 INFO L225 Difference]: With dead ends: 151 [2020-07-07 11:33:42,269 INFO L226 Difference]: Without dead ends: 112 [2020-07-07 11:33:42,271 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 [2020-07-07 11:33:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-07 11:33:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-07-07 11:33:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-07 11:33:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-07-07 11:33:42,289 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 87 [2020-07-07 11:33:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:42,289 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-07-07 11:33:42,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 11:33:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-07-07 11:33:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 11:33:42,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:42,291 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] [2020-07-07 11:33:42,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:42,505 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:42,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1713181474, now seen corresponding path program 11 times [2020-07-07 11:33:42,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:42,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351724674] [2020-07-07 11:33:42,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:42,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351724674] [2020-07-07 11:33:42,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574002657] [2020-07-07 11:33:42,645 INFO L92 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 [2020-07-07 11:33:42,712 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-07-07 11:33:42,712 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:42,713 INFO L264 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-07 11:33:42,716 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:42,729 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 11:33:42,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:42,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-07 11:33:42,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575003586] [2020-07-07 11:33:42,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 11:33:42,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:42,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 11:33:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:33:42,768 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 15 states. [2020-07-07 11:33:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:42,884 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-07-07 11:33:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 11:33:42,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-07-07 11:33:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:42,887 INFO L225 Difference]: With dead ends: 95 [2020-07-07 11:33:42,888 INFO L226 Difference]: Without dead ends: 93 [2020-07-07 11:33:42,889 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 [2020-07-07 11:33:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-07 11:33:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-07-07 11:33:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-07 11:33:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-07-07 11:33:42,899 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 89 [2020-07-07 11:33:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:42,899 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-07-07 11:33:42,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 11:33:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-07-07 11:33:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-07 11:33:42,901 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:42,901 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] [2020-07-07 11:33:43,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-07 11:33:43,116 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:43,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1950838080, now seen corresponding path program 12 times [2020-07-07 11:33:43,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:43,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622838917] [2020-07-07 11:33:43,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:43,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622838917] [2020-07-07 11:33:43,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979926022] [2020-07-07 11:33:43,388 INFO L92 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 [2020-07-07 11:33:43,453 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-07-07 11:33:43,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:43,455 INFO L264 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-07 11:33:43,457 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 180 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:43,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:43,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2020-07-07 11:33:43,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971508651] [2020-07-07 11:33:43,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-07 11:33:43,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:43,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-07 11:33:43,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-07-07 11:33:43,731 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 31 states. [2020-07-07 11:33:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:44,111 INFO L93 Difference]: Finished difference Result 179 states and 213 transitions. [2020-07-07 11:33:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 11:33:44,114 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 105 [2020-07-07 11:33:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:44,115 INFO L225 Difference]: With dead ends: 179 [2020-07-07 11:33:44,115 INFO L226 Difference]: Without dead ends: 130 [2020-07-07 11:33:44,119 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 [2020-07-07 11:33:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-07 11:33:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2020-07-07 11:33:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-07 11:33:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2020-07-07 11:33:44,131 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 105 [2020-07-07 11:33:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:44,131 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2020-07-07 11:33:44,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-07 11:33:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2020-07-07 11:33:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-07-07 11:33:44,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:44,136 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] [2020-07-07 11:33:44,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-07 11:33:44,350 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash -734782619, now seen corresponding path program 13 times [2020-07-07 11:33:44,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:44,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255850035] [2020-07-07 11:33:44,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:44,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255850035] [2020-07-07 11:33:44,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674063365] [2020-07-07 11:33:44,611 INFO L92 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 [2020-07-07 11:33:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:44,665 INFO L264 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-07 11:33:44,667 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 180 proven. 90 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:44,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:44,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 32 [2020-07-07 11:33:44,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223860667] [2020-07-07 11:33:44,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-07 11:33:44,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:44,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-07 11:33:44,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-07-07 11:33:44,977 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand 32 states. [2020-07-07 11:33:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:45,429 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2020-07-07 11:33:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 11:33:45,429 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2020-07-07 11:33:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:45,431 INFO L225 Difference]: With dead ends: 183 [2020-07-07 11:33:45,431 INFO L226 Difference]: Without dead ends: 136 [2020-07-07 11:33:45,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=481, Invalid=1241, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 11:33:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-07 11:33:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-07-07 11:33:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-07 11:33:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-07-07 11:33:45,439 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 107 [2020-07-07 11:33:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:45,439 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-07-07 11:33:45,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-07 11:33:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-07-07 11:33:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-07 11:33:45,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:45,441 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] [2020-07-07 11:33:45,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-07-07 11:33:45,647 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:45,648 INFO L82 PathProgramCache]: Analyzing trace with hash -336589110, now seen corresponding path program 14 times [2020-07-07 11:33:45,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:45,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30805283] [2020-07-07 11:33:45,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:45,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30805283] [2020-07-07 11:33:45,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018844348] [2020-07-07 11:33:45,814 INFO L92 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 [2020-07-07 11:33:45,872 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:45,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:45,875 INFO L264 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-07 11:33:45,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:45,909 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 128 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-07-07 11:33:45,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:45,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-07 11:33:45,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284284588] [2020-07-07 11:33:45,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 11:33:45,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 11:33:45,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-07-07 11:33:45,968 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 17 states. [2020-07-07 11:33:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:46,136 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-07-07 11:33:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 11:33:46,136 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2020-07-07 11:33:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:46,138 INFO L225 Difference]: With dead ends: 111 [2020-07-07 11:33:46,138 INFO L226 Difference]: Without dead ends: 109 [2020-07-07 11:33:46,139 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 [2020-07-07 11:33:46,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-07 11:33:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-07-07 11:33:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-07 11:33:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2020-07-07 11:33:46,156 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 109 [2020-07-07 11:33:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:46,157 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2020-07-07 11:33:46,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 11:33:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2020-07-07 11:33:46,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-07 11:33:46,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:46,160 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] [2020-07-07 11:33:46,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:46,374 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1711037612, now seen corresponding path program 15 times [2020-07-07 11:33:46,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:46,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275788268] [2020-07-07 11:33:46,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 264 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:46,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275788268] [2020-07-07 11:33:46,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544516854] [2020-07-07 11:33:46,924 INFO L92 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 [2020-07-07 11:33:47,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-07-07 11:33:47,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:47,019 INFO L264 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-07 11:33:47,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 264 proven. 110 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:47,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:47,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2020-07-07 11:33:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812134251] [2020-07-07 11:33:47,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-07 11:33:47,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-07 11:33:47,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 11:33:47,361 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand 37 states. [2020-07-07 11:33:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:47,884 INFO L93 Difference]: Finished difference Result 211 states and 252 transitions. [2020-07-07 11:33:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 11:33:47,884 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 125 [2020-07-07 11:33:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:47,886 INFO L225 Difference]: With dead ends: 211 [2020-07-07 11:33:47,886 INFO L226 Difference]: Without dead ends: 154 [2020-07-07 11:33:47,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=611, Invalid=1645, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 11:33:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-07 11:33:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-07-07 11:33:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-07 11:33:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-07 11:33:47,895 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 125 [2020-07-07 11:33:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:47,895 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-07 11:33:47,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-07 11:33:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-07 11:33:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-07 11:33:47,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:47,897 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] [2020-07-07 11:33:48,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-07 11:33:48,111 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:48,112 INFO L82 PathProgramCache]: Analyzing trace with hash 66724049, now seen corresponding path program 16 times [2020-07-07 11:33:48,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:48,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691746466] [2020-07-07 11:33:48,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:48,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691746466] [2020-07-07 11:33:48,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226632023] [2020-07-07 11:33:48,475 INFO L92 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 [2020-07-07 11:33:48,557 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:33:48,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:48,559 INFO L264 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-07 11:33:48,562 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 264 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:48,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:48,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 38 [2020-07-07 11:33:48,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260733176] [2020-07-07 11:33:48,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-07 11:33:48,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-07 11:33:48,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 11:33:48,982 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 38 states. [2020-07-07 11:33:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:49,552 INFO L93 Difference]: Finished difference Result 215 states and 259 transitions. [2020-07-07 11:33:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 11:33:49,552 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 127 [2020-07-07 11:33:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:49,554 INFO L225 Difference]: With dead ends: 215 [2020-07-07 11:33:49,554 INFO L226 Difference]: Without dead ends: 160 [2020-07-07 11:33:49,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 11:33:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-07 11:33:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 112. [2020-07-07 11:33:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-07 11:33:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-07-07 11:33:49,563 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 127 [2020-07-07 11:33:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:49,563 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-07-07 11:33:49,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-07 11:33:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-07-07 11:33:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-07 11:33:49,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:49,565 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] [2020-07-07 11:33:49,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:49,775 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash 429354934, now seen corresponding path program 17 times [2020-07-07 11:33:49,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:49,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190021044] [2020-07-07 11:33:49,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:49,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190021044] [2020-07-07 11:33:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188146097] [2020-07-07 11:33:49,977 INFO L92 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 [2020-07-07 11:33:50,072 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-07-07 11:33:50,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:50,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-07 11:33:50,077 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:50,097 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 178 proven. 242 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-07 11:33:50,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:50,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-07 11:33:50,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193606278] [2020-07-07 11:33:50,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 11:33:50,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:50,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 11:33:50,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:33:50,140 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 19 states. [2020-07-07 11:33:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:50,323 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2020-07-07 11:33:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 11:33:50,324 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 129 [2020-07-07 11:33:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:50,325 INFO L225 Difference]: With dead ends: 127 [2020-07-07 11:33:50,325 INFO L226 Difference]: Without dead ends: 125 [2020-07-07 11:33:50,326 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 [2020-07-07 11:33:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-07 11:33:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-07-07 11:33:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-07 11:33:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2020-07-07 11:33:50,335 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 129 [2020-07-07 11:33:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:50,336 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2020-07-07 11:33:50,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 11:33:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2020-07-07 11:33:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-07 11:33:50,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:50,338 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] [2020-07-07 11:33:50,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:50,543 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:50,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1971086744, now seen corresponding path program 18 times [2020-07-07 11:33:50,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:50,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687545872] [2020-07-07 11:33:50,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:51,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687545872] [2020-07-07 11:33:51,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323936905] [2020-07-07 11:33:51,003 INFO L92 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 [2020-07-07 11:33:51,087 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2020-07-07 11:33:51,088 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:51,089 INFO L264 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-07 11:33:51,092 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 364 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:51,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:51,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 43 [2020-07-07 11:33:51,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673116152] [2020-07-07 11:33:51,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-07 11:33:51,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-07 11:33:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1358, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 11:33:51,588 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 43 states. [2020-07-07 11:33:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:52,216 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2020-07-07 11:33:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 11:33:52,216 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 145 [2020-07-07 11:33:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:52,218 INFO L225 Difference]: With dead ends: 243 [2020-07-07 11:33:52,218 INFO L226 Difference]: Without dead ends: 178 [2020-07-07 11:33:52,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=2255, Unknown=0, NotChecked=0, Total=3080 [2020-07-07 11:33:52,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-07 11:33:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2020-07-07 11:33:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-07 11:33:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2020-07-07 11:33:52,228 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 145 [2020-07-07 11:33:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:52,228 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2020-07-07 11:33:52,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-07 11:33:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2020-07-07 11:33:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-07 11:33:52,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:52,230 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] [2020-07-07 11:33:52,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-07-07 11:33:52,444 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:52,445 INFO L82 PathProgramCache]: Analyzing trace with hash 554411325, now seen corresponding path program 19 times [2020-07-07 11:33:52,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:52,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823392219] [2020-07-07 11:33:52,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:52,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823392219] [2020-07-07 11:33:52,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013851441] [2020-07-07 11:33:52,903 INFO L92 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 [2020-07-07 11:33:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:52,994 INFO L264 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-07 11:33:52,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 364 proven. 182 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:53,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 44 [2020-07-07 11:33:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817353616] [2020-07-07 11:33:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-07 11:33:53,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-07 11:33:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 11:33:53,527 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand 44 states. [2020-07-07 11:33:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:54,163 INFO L93 Difference]: Finished difference Result 247 states and 298 transitions. [2020-07-07 11:33:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 11:33:54,163 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 147 [2020-07-07 11:33:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:54,165 INFO L225 Difference]: With dead ends: 247 [2020-07-07 11:33:54,165 INFO L226 Difference]: Without dead ends: 184 [2020-07-07 11:33:54,167 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 [2020-07-07 11:33:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-07 11:33:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 128. [2020-07-07 11:33:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-07 11:33:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 137 transitions. [2020-07-07 11:33:54,175 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 137 transitions. Word has length 147 [2020-07-07 11:33:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:54,175 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 137 transitions. [2020-07-07 11:33:54,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-07 11:33:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 137 transitions. [2020-07-07 11:33:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-07 11:33:54,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:54,177 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] [2020-07-07 11:33:54,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:54,391 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:54,392 INFO L82 PathProgramCache]: Analyzing trace with hash 633966498, now seen corresponding path program 20 times [2020-07-07 11:33:54,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:54,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699516849] [2020-07-07 11:33:54,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:54,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699516849] [2020-07-07 11:33:54,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283618233] [2020-07-07 11:33:54,660 INFO L92 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 [2020-07-07 11:33:54,745 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:54,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:54,747 INFO L264 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-07 11:33:54,750 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:54,763 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 236 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:54,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:54,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-07 11:33:54,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933181541] [2020-07-07 11:33:54,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 11:33:54,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:54,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 11:33:54,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:33:54,802 INFO L87 Difference]: Start difference. First operand 128 states and 137 transitions. Second operand 21 states. [2020-07-07 11:33:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,016 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-07 11:33:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 11:33:55,016 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 149 [2020-07-07 11:33:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,018 INFO L225 Difference]: With dead ends: 143 [2020-07-07 11:33:55,018 INFO L226 Difference]: Without dead ends: 141 [2020-07-07 11:33:55,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-07-07 11:33:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-07 11:33:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2020-07-07 11:33:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-07 11:33:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2020-07-07 11:33:55,028 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 149 [2020-07-07 11:33:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,028 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2020-07-07 11:33:55,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 11:33:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2020-07-07 11:33:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-07 11:33:55,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:55,031 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] [2020-07-07 11:33:55,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-07 11:33:55,244 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:55,245 INFO L82 PathProgramCache]: Analyzing trace with hash -869716604, now seen corresponding path program 21 times [2020-07-07 11:33:55,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512304048] [2020-07-07 11:33:55,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 480 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:33:55,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512304048] [2020-07-07 11:33:55,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394301418] [2020-07-07 11:33:55,795 INFO L92 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 [2020-07-07 11:33:55,877 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-07-07 11:33:55,877 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:55,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-07 11:33:55,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 480 proven. 210 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:33:56,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:56,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 49 [2020-07-07 11:33:56,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081932457] [2020-07-07 11:33:56,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-07 11:33:56,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-07 11:33:56,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=1776, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 11:33:56,495 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 49 states. [2020-07-07 11:33:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:57,265 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2020-07-07 11:33:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 11:33:57,265 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 165 [2020-07-07 11:33:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:57,267 INFO L225 Difference]: With dead ends: 275 [2020-07-07 11:33:57,267 INFO L226 Difference]: Without dead ends: 202 [2020-07-07 11:33:57,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1071, Invalid=2961, Unknown=0, NotChecked=0, Total=4032 [2020-07-07 11:33:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-07 11:33:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2020-07-07 11:33:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-07 11:33:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-07-07 11:33:57,277 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 165 [2020-07-07 11:33:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:57,278 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-07-07 11:33:57,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-07 11:33:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-07-07 11:33:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 11:33:57,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:57,280 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] [2020-07-07 11:33:57,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-07-07 11:33:57,495 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash -583456599, now seen corresponding path program 22 times [2020-07-07 11:33:57,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:57,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745101543] [2020-07-07 11:33:57,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:33:58,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745101543] [2020-07-07 11:33:58,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435786165] [2020-07-07 11:33:58,154 INFO L92 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 [2020-07-07 11:33:58,227 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:33:58,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:58,230 INFO L264 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-07 11:33:58,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:33:58,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:58,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 50 [2020-07-07 11:33:58,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526329694] [2020-07-07 11:33:58,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-07 11:33:58,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-07 11:33:58,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 11:33:58,923 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 50 states. [2020-07-07 11:33:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:59,741 INFO L93 Difference]: Finished difference Result 279 states and 337 transitions. [2020-07-07 11:33:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 11:33:59,741 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 167 [2020-07-07 11:33:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:59,745 INFO L225 Difference]: With dead ends: 279 [2020-07-07 11:33:59,745 INFO L226 Difference]: Without dead ends: 208 [2020-07-07 11:33:59,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2020-07-07 11:33:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-07 11:33:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 144. [2020-07-07 11:33:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-07-07 11:33:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-07-07 11:33:59,763 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 167 [2020-07-07 11:33:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:59,764 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-07-07 11:33:59,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-07 11:33:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-07-07 11:33:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 11:33:59,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:59,766 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] [2020-07-07 11:33:59,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:59,981 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -365498738, now seen corresponding path program 23 times [2020-07-07 11:33:59,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:59,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996215388] [2020-07-07 11:33:59,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:34:00,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996215388] [2020-07-07 11:34:00,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219180330] [2020-07-07 11:34:00,260 INFO L92 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 [2020-07-07 11:34:00,368 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-07-07 11:34:00,369 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:00,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-07 11:34:00,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:00,390 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-07-07 11:34:00,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:00,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-07 11:34:00,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613155332] [2020-07-07 11:34:00,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-07 11:34:00,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-07 11:34:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-07-07 11:34:00,456 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 23 states. [2020-07-07 11:34:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:00,726 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-07-07 11:34:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 11:34:00,726 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 169 [2020-07-07 11:34:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:00,728 INFO L225 Difference]: With dead ends: 159 [2020-07-07 11:34:00,728 INFO L226 Difference]: Without dead ends: 157 [2020-07-07 11:34:00,729 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 [2020-07-07 11:34:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-07 11:34:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-07-07 11:34:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-07-07 11:34:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-07-07 11:34:00,739 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 169 [2020-07-07 11:34:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:00,740 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-07-07 11:34:00,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-07 11:34:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-07-07 11:34:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-07 11:34:00,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:00,742 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] [2020-07-07 11:34:00,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-07-07 11:34:00,956 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:00,956 INFO L82 PathProgramCache]: Analyzing trace with hash -760007568, now seen corresponding path program 24 times [2020-07-07 11:34:00,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:00,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624433295] [2020-07-07 11:34:00,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:01,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624433295] [2020-07-07 11:34:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185104663] [2020-07-07 11:34:01,857 INFO L92 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 [2020-07-07 11:34:02,031 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-07-07 11:34:02,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:02,035 INFO L264 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-07 11:34:02,040 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 612 proven. 272 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:02,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:02,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 55 [2020-07-07 11:34:02,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351983534] [2020-07-07 11:34:02,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-07 11:34:02,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:02,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-07 11:34:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=2250, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 11:34:02,921 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 55 states. [2020-07-07 11:34:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:03,978 INFO L93 Difference]: Finished difference Result 307 states and 369 transitions. [2020-07-07 11:34:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 11:34:03,979 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 185 [2020-07-07 11:34:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:03,981 INFO L225 Difference]: With dead ends: 307 [2020-07-07 11:34:03,982 INFO L226 Difference]: Without dead ends: 226 [2020-07-07 11:34:03,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1349, Invalid=3763, Unknown=0, NotChecked=0, Total=5112 [2020-07-07 11:34:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-07 11:34:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 158. [2020-07-07 11:34:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-07 11:34:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-07-07 11:34:04,003 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 185 [2020-07-07 11:34:04,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:04,003 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-07-07 11:34:04,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-07 11:34:04,004 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-07-07 11:34:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-07 11:34:04,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:04,008 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] [2020-07-07 11:34:04,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:04,222 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1861014763, now seen corresponding path program 25 times [2020-07-07 11:34:04,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:04,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062046586] [2020-07-07 11:34:04,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:05,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062046586] [2020-07-07 11:34:05,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669118046] [2020-07-07 11:34:05,070 INFO L92 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 [2020-07-07 11:34:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:05,147 INFO L264 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-07 11:34:05,150 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 612 proven. 306 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:06,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:06,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 56 [2020-07-07 11:34:06,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834763910] [2020-07-07 11:34:06,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-07 11:34:06,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:06,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-07 11:34:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2341, Unknown=0, NotChecked=0, Total=3080 [2020-07-07 11:34:06,003 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 56 states. [2020-07-07 11:34:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:07,007 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-07-07 11:34:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 11:34:07,007 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 187 [2020-07-07 11:34:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:07,009 INFO L225 Difference]: With dead ends: 311 [2020-07-07 11:34:07,009 INFO L226 Difference]: Without dead ends: 232 [2020-07-07 11:34:07,012 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 [2020-07-07 11:34:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-07 11:34:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2020-07-07 11:34:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-07 11:34:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-07-07 11:34:07,022 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 187 [2020-07-07 11:34:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:07,022 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-07-07 11:34:07,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-07 11:34:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-07-07 11:34:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-07 11:34:07,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:07,024 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] [2020-07-07 11:34:07,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-07 11:34:07,238 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 927992954, now seen corresponding path program 26 times [2020-07-07 11:34:07,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:07,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396558445] [2020-07-07 11:34:07,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:07,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396558445] [2020-07-07 11:34:07,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142144342] [2020-07-07 11:34:07,584 INFO L92 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 [2020-07-07 11:34:07,663 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:07,663 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:07,666 INFO L264 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-07 11:34:07,671 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:07,691 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 376 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-07-07 11:34:07,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:07,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-07 11:34:07,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964665777] [2020-07-07 11:34:07,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 11:34:07,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:07,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 11:34:07,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=380, Unknown=0, NotChecked=0, Total=600 [2020-07-07 11:34:07,747 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 25 states. [2020-07-07 11:34:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:08,011 INFO L93 Difference]: Finished difference Result 175 states and 187 transitions. [2020-07-07 11:34:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 11:34:08,012 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 189 [2020-07-07 11:34:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:08,013 INFO L225 Difference]: With dead ends: 175 [2020-07-07 11:34:08,013 INFO L226 Difference]: Without dead ends: 173 [2020-07-07 11:34:08,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2020-07-07 11:34:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-07-07 11:34:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-07-07 11:34:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-07 11:34:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-07-07 11:34:08,029 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 189 [2020-07-07 11:34:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:08,030 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-07-07 11:34:08,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 11:34:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-07-07 11:34:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-07 11:34:08,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:08,033 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] [2020-07-07 11:34:08,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-07 11:34:08,247 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:08,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1753938524, now seen corresponding path program 27 times [2020-07-07 11:34:08,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:08,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814352202] [2020-07-07 11:34:08,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 760 proven. 342 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:09,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814352202] [2020-07-07 11:34:09,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284975557] [2020-07-07 11:34:09,115 INFO L92 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 [2020-07-07 11:34:09,243 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2020-07-07 11:34:09,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:09,246 INFO L264 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-07 11:34:09,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 760 proven. 342 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:10,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:10,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 61 [2020-07-07 11:34:10,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150883841] [2020-07-07 11:34:10,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-07 11:34:10,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:10,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-07 11:34:10,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 11:34:10,253 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 61 states. [2020-07-07 11:34:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:11,375 INFO L93 Difference]: Finished difference Result 339 states and 408 transitions. [2020-07-07 11:34:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 11:34:11,375 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 205 [2020-07-07 11:34:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:11,377 INFO L225 Difference]: With dead ends: 339 [2020-07-07 11:34:11,377 INFO L226 Difference]: Without dead ends: 250 [2020-07-07 11:34:11,379 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 [2020-07-07 11:34:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-07 11:34:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2020-07-07 11:34:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-07 11:34:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-07-07 11:34:11,388 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 205 [2020-07-07 11:34:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:11,389 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-07-07 11:34:11,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-07 11:34:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-07-07 11:34:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-07 11:34:11,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:11,390 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] [2020-07-07 11:34:11,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:11,604 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:11,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1542073473, now seen corresponding path program 28 times [2020-07-07 11:34:11,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:11,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481802761] [2020-07-07 11:34:11,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:12,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481802761] [2020-07-07 11:34:12,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017246439] [2020-07-07 11:34:12,486 INFO L92 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 [2020-07-07 11:34:12,583 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:34:12,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:12,586 INFO L264 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-07 11:34:12,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 760 proven. 380 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:13,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:13,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 62 [2020-07-07 11:34:13,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993476982] [2020-07-07 11:34:13,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-07 11:34:13,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:13,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-07 11:34:13,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2881, Unknown=0, NotChecked=0, Total=3782 [2020-07-07 11:34:13,627 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 62 states. [2020-07-07 11:34:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:14,816 INFO L93 Difference]: Finished difference Result 343 states and 415 transitions. [2020-07-07 11:34:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-07 11:34:14,817 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 207 [2020-07-07 11:34:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:14,818 INFO L225 Difference]: With dead ends: 343 [2020-07-07 11:34:14,819 INFO L226 Difference]: Without dead ends: 256 [2020-07-07 11:34:14,820 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 [2020-07-07 11:34:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-07 11:34:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 176. [2020-07-07 11:34:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-07 11:34:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-07-07 11:34:14,830 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 207 [2020-07-07 11:34:14,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:14,830 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-07-07 11:34:14,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-07 11:34:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-07-07 11:34:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 11:34:14,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:14,832 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] [2020-07-07 11:34:15,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:15,045 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash -196777626, now seen corresponding path program 29 times [2020-07-07 11:34:15,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:15,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549178232] [2020-07-07 11:34:15,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:15,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549178232] [2020-07-07 11:34:15,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118602406] [2020-07-07 11:34:15,467 INFO L92 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 [2020-07-07 11:34:15,588 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2020-07-07 11:34:15,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:15,591 INFO L264 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 43 conjunts are in the unsatisfiable core [2020-07-07 11:34:15,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:15,619 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 458 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-07-07 11:34:15,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:15,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-07 11:34:15,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994795842] [2020-07-07 11:34:15,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-07 11:34:15,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:15,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-07 11:34:15,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=439, Unknown=0, NotChecked=0, Total=702 [2020-07-07 11:34:15,691 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 27 states. [2020-07-07 11:34:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:15,967 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-07-07 11:34:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 11:34:15,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 209 [2020-07-07 11:34:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:15,971 INFO L225 Difference]: With dead ends: 191 [2020-07-07 11:34:15,971 INFO L226 Difference]: Without dead ends: 189 [2020-07-07 11:34:15,973 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 [2020-07-07 11:34:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-07-07 11:34:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2020-07-07 11:34:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-07 11:34:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2020-07-07 11:34:15,993 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 209 [2020-07-07 11:34:15,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:15,994 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2020-07-07 11:34:15,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-07 11:34:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2020-07-07 11:34:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-07-07 11:34:15,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:15,996 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] [2020-07-07 11:34:16,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-07-07 11:34:16,210 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash 65077064, now seen corresponding path program 30 times [2020-07-07 11:34:16,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:16,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648167515] [2020-07-07 11:34:16,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:17,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648167515] [2020-07-07 11:34:17,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26629858] [2020-07-07 11:34:17,233 INFO L92 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 [2020-07-07 11:34:17,359 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2020-07-07 11:34:17,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:17,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-07 11:34:17,366 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 924 proven. 420 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:18,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:18,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 67 [2020-07-07 11:34:18,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325085350] [2020-07-07 11:34:18,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-07 11:34:18,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-07 11:34:18,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=3366, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 11:34:18,594 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand 67 states. [2020-07-07 11:34:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:19,953 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-07-07 11:34:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 11:34:19,955 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 225 [2020-07-07 11:34:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:19,957 INFO L225 Difference]: With dead ends: 371 [2020-07-07 11:34:19,957 INFO L226 Difference]: Without dead ends: 274 [2020-07-07 11:34:19,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2001, Invalid=5655, Unknown=0, NotChecked=0, Total=7656 [2020-07-07 11:34:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-07 11:34:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 190. [2020-07-07 11:34:19,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-07 11:34:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 203 transitions. [2020-07-07 11:34:19,979 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 203 transitions. Word has length 225 [2020-07-07 11:34:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:19,980 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 203 transitions. [2020-07-07 11:34:19,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-07 11:34:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 203 transitions. [2020-07-07 11:34:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-07 11:34:19,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:19,984 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] [2020-07-07 11:34:20,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:20,193 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1137618157, now seen corresponding path program 31 times [2020-07-07 11:34:20,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:20,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561322509] [2020-07-07 11:34:20,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:21,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561322509] [2020-07-07 11:34:21,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539054901] [2020-07-07 11:34:21,206 INFO L92 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 [2020-07-07 11:34:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:21,318 INFO L264 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-07 11:34:21,321 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 924 proven. 462 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:22,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:22,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 68 [2020-07-07 11:34:22,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739123160] [2020-07-07 11:34:22,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-07 11:34:22,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:22,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-07 11:34:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2020-07-07 11:34:22,566 INFO L87 Difference]: Start difference. First operand 190 states and 203 transitions. Second operand 68 states. [2020-07-07 11:34:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:24,031 INFO L93 Difference]: Finished difference Result 375 states and 454 transitions. [2020-07-07 11:34:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 11:34:24,032 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 227 [2020-07-07 11:34:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:24,034 INFO L225 Difference]: With dead ends: 375 [2020-07-07 11:34:24,034 INFO L226 Difference]: Without dead ends: 280 [2020-07-07 11:34:24,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2113, Invalid=5897, Unknown=0, NotChecked=0, Total=8010 [2020-07-07 11:34:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-07 11:34:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 192. [2020-07-07 11:34:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-07-07 11:34:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2020-07-07 11:34:24,046 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 227 [2020-07-07 11:34:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:24,046 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2020-07-07 11:34:24,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-07 11:34:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2020-07-07 11:34:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-07 11:34:24,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:24,048 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] [2020-07-07 11:34:24,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-07 11:34:24,264 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1057457490, now seen corresponding path program 32 times [2020-07-07 11:34:24,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:24,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529949057] [2020-07-07 11:34:24,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:24,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529949057] [2020-07-07 11:34:24,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213536103] [2020-07-07 11:34:24,786 INFO L92 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 [2020-07-07 11:34:24,905 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:24,905 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:24,908 INFO L264 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-07 11:34:24,911 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:24,926 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 548 proven. 882 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-07-07 11:34:24,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:24,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-07 11:34:24,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542685495] [2020-07-07 11:34:24,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 11:34:24,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 11:34:24,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2020-07-07 11:34:24,991 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand 29 states. [2020-07-07 11:34:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:25,363 INFO L93 Difference]: Finished difference Result 207 states and 221 transitions. [2020-07-07 11:34:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 11:34:25,364 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 229 [2020-07-07 11:34:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:25,366 INFO L225 Difference]: With dead ends: 207 [2020-07-07 11:34:25,366 INFO L226 Difference]: Without dead ends: 205 [2020-07-07 11:34:25,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2020-07-07 11:34:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-07 11:34:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-07-07 11:34:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-07 11:34:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2020-07-07 11:34:25,378 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 229 [2020-07-07 11:34:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:25,378 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2020-07-07 11:34:25,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 11:34:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2020-07-07 11:34:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-07 11:34:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:25,380 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] [2020-07-07 11:34:25,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-07 11:34:25,594 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:25,594 INFO L82 PathProgramCache]: Analyzing trace with hash -777665740, now seen corresponding path program 33 times [2020-07-07 11:34:25,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:25,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629921861] [2020-07-07 11:34:25,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1104 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:26,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629921861] [2020-07-07 11:34:26,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354547088] [2020-07-07 11:34:26,818 INFO L92 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 [2020-07-07 11:34:26,942 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-07-07 11:34:26,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:26,945 INFO L264 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 49 conjunts are in the unsatisfiable core [2020-07-07 11:34:26,948 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1104 proven. 506 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:28,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:28,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 73 [2020-07-07 11:34:28,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732579022] [2020-07-07 11:34:28,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-07 11:34:28,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-07 11:34:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1248, Invalid=4008, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 11:34:28,598 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 73 states. [2020-07-07 11:34:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:30,388 INFO L93 Difference]: Finished difference Result 403 states and 486 transitions. [2020-07-07 11:34:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-07 11:34:30,389 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 245 [2020-07-07 11:34:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:30,391 INFO L225 Difference]: With dead ends: 403 [2020-07-07 11:34:30,391 INFO L226 Difference]: Without dead ends: 298 [2020-07-07 11:34:30,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1838 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2375, Invalid=6745, Unknown=0, NotChecked=0, Total=9120 [2020-07-07 11:34:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-07-07 11:34:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 206. [2020-07-07 11:34:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-07 11:34:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2020-07-07 11:34:30,418 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 245 [2020-07-07 11:34:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:30,419 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2020-07-07 11:34:30,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-07 11:34:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2020-07-07 11:34:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-07 11:34:30,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:30,421 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] [2020-07-07 11:34:30,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-07 11:34:30,634 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:30,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1435577433, now seen corresponding path program 34 times [2020-07-07 11:34:30,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:30,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875106325] [2020-07-07 11:34:30,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:31,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875106325] [2020-07-07 11:34:31,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851284174] [2020-07-07 11:34:31,839 INFO L92 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 [2020-07-07 11:34:31,941 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:34:31,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:31,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-07 11:34:31,947 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1104 proven. 552 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:33,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:33,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 74 [2020-07-07 11:34:33,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860704128] [2020-07-07 11:34:33,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-07 11:34:33,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-07 11:34:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1273, Invalid=4129, Unknown=0, NotChecked=0, Total=5402 [2020-07-07 11:34:33,487 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 74 states. [2020-07-07 11:34:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:35,108 INFO L93 Difference]: Finished difference Result 407 states and 493 transitions. [2020-07-07 11:34:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-07 11:34:35,108 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 247 [2020-07-07 11:34:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:35,110 INFO L225 Difference]: With dead ends: 407 [2020-07-07 11:34:35,110 INFO L226 Difference]: Without dead ends: 304 [2020-07-07 11:34:35,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2020-07-07 11:34:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-07 11:34:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 208. [2020-07-07 11:34:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-07 11:34:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2020-07-07 11:34:35,122 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 247 [2020-07-07 11:34:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:35,122 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2020-07-07 11:34:35,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-07 11:34:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2020-07-07 11:34:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-07-07 11:34:35,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,124 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] [2020-07-07 11:34:35,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-07 11:34:35,338 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1941512130, now seen corresponding path program 35 times [2020-07-07 11:34:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651940750] [2020-07-07 11:34:35,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:35,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651940750] [2020-07-07 11:34:35,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325106236] [2020-07-07 11:34:35,892 INFO L92 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 [2020-07-07 11:34:36,008 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2020-07-07 11:34:36,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:36,011 INFO L264 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-07 11:34:36,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:36,033 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 646 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-07-07 11:34:36,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:36,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-07 11:34:36,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854411982] [2020-07-07 11:34:36,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-07 11:34:36,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:36,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-07 11:34:36,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=569, Unknown=0, NotChecked=0, Total=930 [2020-07-07 11:34:36,117 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 31 states. [2020-07-07 11:34:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:36,408 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2020-07-07 11:34:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 11:34:36,409 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 249 [2020-07-07 11:34:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:36,411 INFO L225 Difference]: With dead ends: 223 [2020-07-07 11:34:36,411 INFO L226 Difference]: Without dead ends: 221 [2020-07-07 11:34:36,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=625, Unknown=0, NotChecked=0, Total=992 [2020-07-07 11:34:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-07 11:34:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2020-07-07 11:34:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-07-07 11:34:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2020-07-07 11:34:36,423 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 249 [2020-07-07 11:34:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:36,424 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2020-07-07 11:34:36,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-07 11:34:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2020-07-07 11:34:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 11:34:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:36,426 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] [2020-07-07 11:34:36,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-07 11:34:36,639 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -712391136, now seen corresponding path program 36 times [2020-07-07 11:34:36,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:36,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931619564] [2020-07-07 11:34:36,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:38,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931619564] [2020-07-07 11:34:38,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560528068] [2020-07-07 11:34:38,052 INFO L92 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 [2020-07-07 11:34:38,188 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2020-07-07 11:34:38,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:38,196 INFO L264 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-07 11:34:38,199 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3100 backedges. 1300 proven. 600 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:39,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:39,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 79 [2020-07-07 11:34:39,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869125551] [2020-07-07 11:34:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-07 11:34:39,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-07 11:34:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1456, Invalid=4706, Unknown=0, NotChecked=0, Total=6162 [2020-07-07 11:34:39,962 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand 79 states. [2020-07-07 11:34:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:41,774 INFO L93 Difference]: Finished difference Result 435 states and 525 transitions. [2020-07-07 11:34:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-07 11:34:41,777 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 265 [2020-07-07 11:34:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:41,779 INFO L225 Difference]: With dead ends: 435 [2020-07-07 11:34:41,779 INFO L226 Difference]: Without dead ends: 322 [2020-07-07 11:34:41,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2781, Invalid=7931, Unknown=0, NotChecked=0, Total=10712 [2020-07-07 11:34:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-07 11:34:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 222. [2020-07-07 11:34:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-07 11:34:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2020-07-07 11:34:41,792 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 265 [2020-07-07 11:34:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:41,793 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2020-07-07 11:34:41,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-07 11:34:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2020-07-07 11:34:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-07-07 11:34:41,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:41,795 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] [2020-07-07 11:34:42,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-07 11:34:42,011 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:42,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash -993908027, now seen corresponding path program 37 times [2020-07-07 11:34:42,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:42,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771953709] [2020-07-07 11:34:42,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:43,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771953709] [2020-07-07 11:34:43,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044904552] [2020-07-07 11:34:43,522 INFO L92 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 [2020-07-07 11:34:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-07 11:34:43,650 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:45,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:45,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 80 [2020-07-07 11:34:45,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419642050] [2020-07-07 11:34:45,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-07 11:34:45,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-07 11:34:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4837, Unknown=0, NotChecked=0, Total=6320 [2020-07-07 11:34:45,472 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand 80 states. [2020-07-07 11:34:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:47,504 INFO L93 Difference]: Finished difference Result 439 states and 532 transitions. [2020-07-07 11:34:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-07 11:34:47,505 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 267 [2020-07-07 11:34:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:47,507 INFO L225 Difference]: With dead ends: 439 [2020-07-07 11:34:47,507 INFO L226 Difference]: Without dead ends: 328 [2020-07-07 11:34:47,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2913, Invalid=8217, Unknown=0, NotChecked=0, Total=11130 [2020-07-07 11:34:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-07-07 11:34:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224. [2020-07-07 11:34:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-07 11:34:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2020-07-07 11:34:47,523 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 267 [2020-07-07 11:34:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:47,524 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2020-07-07 11:34:47,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-07 11:34:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2020-07-07 11:34:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-07 11:34:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:47,526 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] [2020-07-07 11:34:47,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-07 11:34:47,739 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -948700630, now seen corresponding path program 38 times [2020-07-07 11:34:47,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:47,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840993000] [2020-07-07 11:34:47,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:48,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840993000] [2020-07-07 11:34:48,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940011938] [2020-07-07 11:34:48,429 INFO L92 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 [2020-07-07 11:34:48,533 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:48,533 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:48,535 INFO L264 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 55 conjunts are in the unsatisfiable core [2020-07-07 11:34:48,538 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:48,559 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-07-07 11:34:48,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:48,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-07 11:34:48,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272571228] [2020-07-07 11:34:48,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 11:34:48,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:48,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 11:34:48,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=640, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 11:34:48,686 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand 33 states. [2020-07-07 11:34:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:49,016 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-07-07 11:34:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 11:34:49,017 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 269 [2020-07-07 11:34:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:49,018 INFO L225 Difference]: With dead ends: 239 [2020-07-07 11:34:49,019 INFO L226 Difference]: Without dead ends: 237 [2020-07-07 11:34:49,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=700, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 11:34:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-07-07 11:34:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2020-07-07 11:34:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-07 11:34:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 252 transitions. [2020-07-07 11:34:49,038 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 252 transitions. Word has length 269 [2020-07-07 11:34:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:49,041 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 252 transitions. [2020-07-07 11:34:49,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 11:34:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 252 transitions. [2020-07-07 11:34:49,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-07-07 11:34:49,044 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:49,045 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] [2020-07-07 11:34:49,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:49,258 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:49,259 INFO L82 PathProgramCache]: Analyzing trace with hash 167610380, now seen corresponding path program 39 times [2020-07-07 11:34:49,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:49,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897061246] [2020-07-07 11:34:49,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1512 proven. 702 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:34:51,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897061246] [2020-07-07 11:34:51,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196351827] [2020-07-07 11:34:51,016 INFO L92 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 [2020-07-07 11:34:51,146 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-07-07 11:34:51,146 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:51,149 INFO L264 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-07 11:34:51,152 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1512 proven. 702 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:34:53,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:53,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 85 [2020-07-07 11:34:53,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366138643] [2020-07-07 11:34:53,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-07 11:34:53,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:53,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-07 11:34:53,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=5460, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 11:34:53,264 INFO L87 Difference]: Start difference. First operand 236 states and 252 transitions. Second operand 85 states. [2020-07-07 11:34:55,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:55,367 INFO L93 Difference]: Finished difference Result 467 states and 564 transitions. [2020-07-07 11:34:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-07 11:34:55,368 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 285 [2020-07-07 11:34:55,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:55,370 INFO L225 Difference]: With dead ends: 467 [2020-07-07 11:34:55,370 INFO L226 Difference]: Without dead ends: 346 [2020-07-07 11:34:55,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3219, Invalid=9213, Unknown=0, NotChecked=0, Total=12432 [2020-07-07 11:34:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-07-07 11:34:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 238. [2020-07-07 11:34:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-07-07 11:34:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 254 transitions. [2020-07-07 11:34:55,383 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 254 transitions. Word has length 285 [2020-07-07 11:34:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:55,384 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 254 transitions. [2020-07-07 11:34:55,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-07 11:34:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 254 transitions. [2020-07-07 11:34:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-07 11:34:55,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:55,386 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] [2020-07-07 11:34:55,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:55,600 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash 196225073, now seen corresponding path program 40 times [2020-07-07 11:34:55,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:55,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806499170] [2020-07-07 11:34:55,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:34:57,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806499170] [2020-07-07 11:34:57,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514435076] [2020-07-07 11:34:57,354 INFO L92 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 [2020-07-07 11:34:57,461 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:34:57,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:57,464 INFO L264 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-07 11:34:57,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1512 proven. 756 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:34:59,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:34:59,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 86 [2020-07-07 11:34:59,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166832178] [2020-07-07 11:34:59,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-07 11:34:59,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:59,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-07 11:34:59,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2020-07-07 11:34:59,681 INFO L87 Difference]: Start difference. First operand 238 states and 254 transitions. Second operand 86 states. [2020-07-07 11:35:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:01,949 INFO L93 Difference]: Finished difference Result 471 states and 571 transitions. [2020-07-07 11:35:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-07 11:35:01,949 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 287 [2020-07-07 11:35:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:01,951 INFO L225 Difference]: With dead ends: 471 [2020-07-07 11:35:01,951 INFO L226 Difference]: Without dead ends: 352 [2020-07-07 11:35:01,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3361, Invalid=9521, Unknown=0, NotChecked=0, Total=12882 [2020-07-07 11:35:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-07-07 11:35:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 240. [2020-07-07 11:35:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-07 11:35:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 256 transitions. [2020-07-07 11:35:01,968 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 256 transitions. Word has length 287 [2020-07-07 11:35:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:01,970 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 256 transitions. [2020-07-07 11:35:01,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-07 11:35:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 256 transitions. [2020-07-07 11:35:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-07-07 11:35:01,972 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:01,972 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] [2020-07-07 11:35:02,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:02,186 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:02,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1925141270, now seen corresponding path program 41 times [2020-07-07 11:35:02,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:02,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898157471] [2020-07-07 11:35:02,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:35:03,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898157471] [2020-07-07 11:35:03,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224985602] [2020-07-07 11:35:03,006 INFO L92 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 [2020-07-07 11:35:03,154 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2020-07-07 11:35:03,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:03,157 INFO L264 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2020-07-07 11:35:03,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:03,175 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 866 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-07-07 11:35:03,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:03,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-07 11:35:03,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549683426] [2020-07-07 11:35:03,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-07 11:35:03,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:03,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-07 11:35:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=715, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 11:35:03,272 INFO L87 Difference]: Start difference. First operand 240 states and 256 transitions. Second operand 35 states. [2020-07-07 11:35:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:03,655 INFO L93 Difference]: Finished difference Result 255 states and 272 transitions. [2020-07-07 11:35:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 11:35:03,656 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 289 [2020-07-07 11:35:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:03,658 INFO L225 Difference]: With dead ends: 255 [2020-07-07 11:35:03,658 INFO L226 Difference]: Without dead ends: 253 [2020-07-07 11:35:03,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=779, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 11:35:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-07 11:35:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2020-07-07 11:35:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-07-07 11:35:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-07-07 11:35:03,670 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 289 [2020-07-07 11:35:03,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:03,671 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-07-07 11:35:03,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-07 11:35:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-07-07 11:35:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-07-07 11:35:03,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:03,673 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] [2020-07-07 11:35:03,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-07-07 11:35:03,889 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:03,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:03,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2144237320, now seen corresponding path program 42 times [2020-07-07 11:35:03,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:03,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689126779] [2020-07-07 11:35:03,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:05,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689126779] [2020-07-07 11:35:05,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438054868] [2020-07-07 11:35:05,916 INFO L92 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 [2020-07-07 11:35:06,071 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2020-07-07 11:35:06,071 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:06,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 61 conjunts are in the unsatisfiable core [2020-07-07 11:35:06,079 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 1740 proven. 812 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:08,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:08,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 91 [2020-07-07 11:35:08,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184766457] [2020-07-07 11:35:08,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-07 11:35:08,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-07 11:35:08,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1920, Invalid=6270, Unknown=0, NotChecked=0, Total=8190 [2020-07-07 11:35:08,706 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 91 states. [2020-07-07 11:35:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:11,208 INFO L93 Difference]: Finished difference Result 499 states and 603 transitions. [2020-07-07 11:35:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-07 11:35:11,209 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 305 [2020-07-07 11:35:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:11,211 INFO L225 Difference]: With dead ends: 499 [2020-07-07 11:35:11,211 INFO L226 Difference]: Without dead ends: 370 [2020-07-07 11:35:11,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3689, Invalid=10591, Unknown=0, NotChecked=0, Total=14280 [2020-07-07 11:35:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-07-07 11:35:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 254. [2020-07-07 11:35:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-07 11:35:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 271 transitions. [2020-07-07 11:35:11,228 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 271 transitions. Word has length 305 [2020-07-07 11:35:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:11,228 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 271 transitions. [2020-07-07 11:35:11,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-07 11:35:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 271 transitions. [2020-07-07 11:35:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-07 11:35:11,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:11,231 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] [2020-07-07 11:35:11,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:11,444 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:11,444 INFO L82 PathProgramCache]: Analyzing trace with hash 191997085, now seen corresponding path program 43 times [2020-07-07 11:35:11,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:11,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698150993] [2020-07-07 11:35:11,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:13,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698150993] [2020-07-07 11:35:13,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113222139] [2020-07-07 11:35:13,537 INFO L92 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 [2020-07-07 11:35:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:13,655 INFO L264 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-07 11:35:13,659 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1740 proven. 870 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:16,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:16,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 92 [2020-07-07 11:35:16,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738253597] [2020-07-07 11:35:16,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-07 11:35:16,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-07 11:35:16,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1951, Invalid=6421, Unknown=0, NotChecked=0, Total=8372 [2020-07-07 11:35:16,269 INFO L87 Difference]: Start difference. First operand 254 states and 271 transitions. Second operand 92 states. [2020-07-07 11:35:18,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:18,843 INFO L93 Difference]: Finished difference Result 503 states and 610 transitions. [2020-07-07 11:35:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-07 11:35:18,843 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 307 [2020-07-07 11:35:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:18,845 INFO L225 Difference]: With dead ends: 503 [2020-07-07 11:35:18,845 INFO L226 Difference]: Without dead ends: 376 [2020-07-07 11:35:18,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2987 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3841, Invalid=10921, Unknown=0, NotChecked=0, Total=14762 [2020-07-07 11:35:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-07 11:35:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 256. [2020-07-07 11:35:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-07 11:35:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 273 transitions. [2020-07-07 11:35:18,860 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 273 transitions. Word has length 307 [2020-07-07 11:35:18,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:18,860 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 273 transitions. [2020-07-07 11:35:18,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-07-07 11:35:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 273 transitions. [2020-07-07 11:35:18,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-07-07 11:35:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:18,863 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] [2020-07-07 11:35:19,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:19,077 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -954635518, now seen corresponding path program 44 times [2020-07-07 11:35:19,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:19,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613859617] [2020-07-07 11:35:19,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:20,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613859617] [2020-07-07 11:35:20,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318694593] [2020-07-07 11:35:20,010 INFO L92 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 [2020-07-07 11:35:20,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:35:20,133 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:20,136 INFO L264 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjunts are in the unsatisfiable core [2020-07-07 11:35:20,140 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:20,160 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 988 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-07-07 11:35:20,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:20,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-07 11:35:20,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803886459] [2020-07-07 11:35:20,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-07 11:35:20,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:20,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-07 11:35:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=794, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 11:35:20,272 INFO L87 Difference]: Start difference. First operand 256 states and 273 transitions. Second operand 37 states. [2020-07-07 11:35:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:20,694 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-07-07 11:35:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 11:35:20,695 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 309 [2020-07-07 11:35:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:20,697 INFO L225 Difference]: With dead ends: 271 [2020-07-07 11:35:20,697 INFO L226 Difference]: Without dead ends: 269 [2020-07-07 11:35:20,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=544, Invalid=862, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 11:35:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-07-07 11:35:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2020-07-07 11:35:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-07 11:35:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 286 transitions. [2020-07-07 11:35:20,711 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 286 transitions. Word has length 309 [2020-07-07 11:35:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:20,711 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 286 transitions. [2020-07-07 11:35:20,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-07 11:35:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 286 transitions. [2020-07-07 11:35:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-07-07 11:35:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:20,714 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] [2020-07-07 11:35:20,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-07 11:35:20,927 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:20,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2146023196, now seen corresponding path program 45 times [2020-07-07 11:35:20,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:20,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785415778] [2020-07-07 11:35:20,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1984 proven. 930 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:23,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785415778] [2020-07-07 11:35:23,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13705759] [2020-07-07 11:35:23,271 INFO L92 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 [2020-07-07 11:35:23,429 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2020-07-07 11:35:23,430 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:23,433 INFO L264 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 65 conjunts are in the unsatisfiable core [2020-07-07 11:35:23,437 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1984 proven. 930 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:26,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:26,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 97 [2020-07-07 11:35:26,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074189666] [2020-07-07 11:35:26,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-07-07 11:35:26,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:26,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-07-07 11:35:26,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2176, Invalid=7136, Unknown=0, NotChecked=0, Total=9312 [2020-07-07 11:35:26,462 INFO L87 Difference]: Start difference. First operand 268 states and 286 transitions. Second operand 97 states. [2020-07-07 11:35:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:29,968 INFO L93 Difference]: Finished difference Result 531 states and 642 transitions. [2020-07-07 11:35:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-07 11:35:29,973 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 325 [2020-07-07 11:35:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:29,976 INFO L225 Difference]: With dead ends: 531 [2020-07-07 11:35:29,976 INFO L226 Difference]: Without dead ends: 394 [2020-07-07 11:35:29,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3346 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4191, Invalid=12065, Unknown=0, NotChecked=0, Total=16256 [2020-07-07 11:35:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-07-07 11:35:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 270. [2020-07-07 11:35:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-07 11:35:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2020-07-07 11:35:30,004 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 325 [2020-07-07 11:35:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:30,005 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2020-07-07 11:35:30,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-07-07 11:35:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2020-07-07 11:35:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-07 11:35:30,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:30,009 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] [2020-07-07 11:35:30,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-07 11:35:30,224 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 735125513, now seen corresponding path program 46 times [2020-07-07 11:35:30,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:30,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054928390] [2020-07-07 11:35:30,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:33,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054928390] [2020-07-07 11:35:33,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372530219] [2020-07-07 11:35:33,225 INFO L92 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 [2020-07-07 11:35:33,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:35:33,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:33,357 INFO L264 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-07 11:35:33,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4836 backedges. 1984 proven. 992 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:36,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:36,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 98 [2020-07-07 11:35:36,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345548935] [2020-07-07 11:35:36,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-07-07 11:35:36,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-07-07 11:35:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2209, Invalid=7297, Unknown=0, NotChecked=0, Total=9506 [2020-07-07 11:35:36,416 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 98 states. [2020-07-07 11:35:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:39,498 INFO L93 Difference]: Finished difference Result 535 states and 649 transitions. [2020-07-07 11:35:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-07 11:35:39,498 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 327 [2020-07-07 11:35:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:39,500 INFO L225 Difference]: With dead ends: 535 [2020-07-07 11:35:39,500 INFO L226 Difference]: Without dead ends: 400 [2020-07-07 11:35:39,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3410 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4353, Invalid=12417, Unknown=0, NotChecked=0, Total=16770 [2020-07-07 11:35:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-07-07 11:35:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 272. [2020-07-07 11:35:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-07 11:35:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 290 transitions. [2020-07-07 11:35:39,518 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 290 transitions. Word has length 327 [2020-07-07 11:35:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:39,518 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 290 transitions. [2020-07-07 11:35:39,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-07-07 11:35:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 290 transitions. [2020-07-07 11:35:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-07 11:35:39,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:39,521 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] [2020-07-07 11:35:39,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-07-07 11:35:39,734 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash -734871058, now seen corresponding path program 47 times [2020-07-07 11:35:39,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:39,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464022540] [2020-07-07 11:35:39,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:40,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464022540] [2020-07-07 11:35:40,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447657202] [2020-07-07 11:35:40,794 INFO L92 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 [2020-07-07 11:35:40,958 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2020-07-07 11:35:40,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:40,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 67 conjunts are in the unsatisfiable core [2020-07-07 11:35:40,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:40,979 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1118 proven. 1922 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-07-07 11:35:41,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:41,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-07 11:35:41,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857007990] [2020-07-07 11:35:41,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-07 11:35:41,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:41,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-07 11:35:41,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=877, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 11:35:41,091 INFO L87 Difference]: Start difference. First operand 272 states and 290 transitions. Second operand 39 states. [2020-07-07 11:35:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:41,581 INFO L93 Difference]: Finished difference Result 287 states and 306 transitions. [2020-07-07 11:35:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 11:35:41,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 329 [2020-07-07 11:35:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:41,584 INFO L225 Difference]: With dead ends: 287 [2020-07-07 11:35:41,585 INFO L226 Difference]: Without dead ends: 285 [2020-07-07 11:35:41,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=611, Invalid=949, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 11:35:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-07-07 11:35:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-07-07 11:35:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-07 11:35:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 303 transitions. [2020-07-07 11:35:41,598 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 303 transitions. Word has length 329 [2020-07-07 11:35:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:41,599 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 303 transitions. [2020-07-07 11:35:41,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-07 11:35:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 303 transitions. [2020-07-07 11:35:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-07 11:35:41,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:41,602 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] [2020-07-07 11:35:41,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:41,813 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1470347312, now seen corresponding path program 48 times [2020-07-07 11:35:41,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:41,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882997177] [2020-07-07 11:35:41,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:35:44,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882997177] [2020-07-07 11:35:44,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564984506] [2020-07-07 11:35:44,490 INFO L92 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 [2020-07-07 11:35:44,652 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2020-07-07 11:35:44,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:44,656 INFO L264 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 69 conjunts are in the unsatisfiable core [2020-07-07 11:35:44,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5412 backedges. 2244 proven. 1056 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:35:48,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:48,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 103 [2020-07-07 11:35:48,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59108415] [2020-07-07 11:35:48,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-07-07 11:35:48,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:48,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-07-07 11:35:48,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=8058, Unknown=0, NotChecked=0, Total=10506 [2020-07-07 11:35:48,140 INFO L87 Difference]: Start difference. First operand 284 states and 303 transitions. Second operand 103 states. [2020-07-07 11:35:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:51,451 INFO L93 Difference]: Finished difference Result 563 states and 681 transitions. [2020-07-07 11:35:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-07 11:35:51,452 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 345 [2020-07-07 11:35:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:51,455 INFO L225 Difference]: With dead ends: 563 [2020-07-07 11:35:51,455 INFO L226 Difference]: Without dead ends: 418 [2020-07-07 11:35:51,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4725, Invalid=13635, Unknown=0, NotChecked=0, Total=18360 [2020-07-07 11:35:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-07-07 11:35:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 286. [2020-07-07 11:35:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-07-07 11:35:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 305 transitions. [2020-07-07 11:35:51,469 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 305 transitions. Word has length 345 [2020-07-07 11:35:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:51,469 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 305 transitions. [2020-07-07 11:35:51,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-07-07 11:35:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 305 transitions. [2020-07-07 11:35:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-07 11:35:51,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:51,472 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] [2020-07-07 11:35:51,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:51,687 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:51,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2069961333, now seen corresponding path program 49 times [2020-07-07 11:35:51,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:51,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414220389] [2020-07-07 11:35:51,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:35:54,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414220389] [2020-07-07 11:35:54,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058382396] [2020-07-07 11:35:54,506 INFO L92 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 [2020-07-07 11:35:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:35:54,640 INFO L264 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-07 11:35:54,643 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2244 proven. 1122 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:35:58,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:35:58,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 104 [2020-07-07 11:35:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770985318] [2020-07-07 11:35:58,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-07-07 11:35:58,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-07-07 11:35:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2483, Invalid=8229, Unknown=0, NotChecked=0, Total=10712 [2020-07-07 11:35:58,265 INFO L87 Difference]: Start difference. First operand 286 states and 305 transitions. Second operand 104 states. [2020-07-07 11:36:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:01,800 INFO L93 Difference]: Finished difference Result 567 states and 688 transitions. [2020-07-07 11:36:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-07 11:36:01,800 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 347 [2020-07-07 11:36:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:01,802 INFO L225 Difference]: With dead ends: 567 [2020-07-07 11:36:01,802 INFO L226 Difference]: Without dead ends: 424 [2020-07-07 11:36:01,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4897, Invalid=14009, Unknown=0, NotChecked=0, Total=18906 [2020-07-07 11:36:01,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-07-07 11:36:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 288. [2020-07-07 11:36:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-07-07 11:36:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2020-07-07 11:36:01,815 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 347 [2020-07-07 11:36:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:01,815 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2020-07-07 11:36:01,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-07-07 11:36:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2020-07-07 11:36:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-07 11:36:01,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:01,818 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] [2020-07-07 11:36:02,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:36:02,033 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1602496550, now seen corresponding path program 50 times [2020-07-07 11:36:02,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:02,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674640936] [2020-07-07 11:36:02,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:36:03,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674640936] [2020-07-07 11:36:03,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965889221] [2020-07-07 11:36:03,226 INFO L92 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 [2020-07-07 11:36:03,359 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:36:03,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:03,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-07 11:36:03,366 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:03,379 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:36:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 1256 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-07-07 11:36:03,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:03,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-07 11:36:03,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939377626] [2020-07-07 11:36:03,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-07 11:36:03,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:03,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-07 11:36:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=964, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 11:36:03,502 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand 41 states. [2020-07-07 11:36:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:04,070 INFO L93 Difference]: Finished difference Result 303 states and 323 transitions. [2020-07-07 11:36:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 11:36:04,071 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 349 [2020-07-07 11:36:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:04,074 INFO L225 Difference]: With dead ends: 303 [2020-07-07 11:36:04,074 INFO L226 Difference]: Without dead ends: 301 [2020-07-07 11:36:04,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=682, Invalid=1040, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 11:36:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-07-07 11:36:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2020-07-07 11:36:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-07-07 11:36:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 320 transitions. [2020-07-07 11:36:04,086 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 320 transitions. Word has length 349 [2020-07-07 11:36:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:04,087 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 320 transitions. [2020-07-07 11:36:04,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-07 11:36:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 320 transitions. [2020-07-07 11:36:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-07-07 11:36:04,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:04,089 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] [2020-07-07 11:36:04,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:36:04,302 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash 242484668, now seen corresponding path program 51 times [2020-07-07 11:36:04,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:04,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998550639] [2020-07-07 11:36:04,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2520 proven. 1190 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:07,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998550639] [2020-07-07 11:36:07,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932615919] [2020-07-07 11:36:07,444 INFO L92 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 [2020-07-07 11:36:07,625 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2020-07-07 11:36:07,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:07,629 INFO L264 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 73 conjunts are in the unsatisfiable core [2020-07-07 11:36:07,633 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6090 backedges. 2520 proven. 1190 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:11,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:11,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 109 [2020-07-07 11:36:11,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24453225] [2020-07-07 11:36:11,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-07-07 11:36:11,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:11,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-07-07 11:36:11,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2736, Invalid=9036, Unknown=0, NotChecked=0, Total=11772 [2020-07-07 11:36:11,753 INFO L87 Difference]: Start difference. First operand 300 states and 320 transitions. Second operand 109 states. [2020-07-07 11:36:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:15,181 INFO L93 Difference]: Finished difference Result 595 states and 720 transitions. [2020-07-07 11:36:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-07 11:36:15,183 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 365 [2020-07-07 11:36:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:15,186 INFO L225 Difference]: With dead ends: 595 [2020-07-07 11:36:15,186 INFO L226 Difference]: Without dead ends: 442 [2020-07-07 11:36:15,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4268 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=5291, Invalid=15301, Unknown=0, NotChecked=0, Total=20592 [2020-07-07 11:36:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-07-07 11:36:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 302. [2020-07-07 11:36:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-07 11:36:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 322 transitions. [2020-07-07 11:36:15,201 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 322 transitions. Word has length 365 [2020-07-07 11:36:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:15,201 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 322 transitions. [2020-07-07 11:36:15,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-07-07 11:36:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 322 transitions. [2020-07-07 11:36:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-07-07 11:36:15,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:15,204 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] [2020-07-07 11:36:15,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-07-07 11:36:15,405 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:15,406 INFO L82 PathProgramCache]: Analyzing trace with hash -814607391, now seen corresponding path program 52 times [2020-07-07 11:36:15,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:15,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26896548] [2020-07-07 11:36:15,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26896548] [2020-07-07 11:36:18,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876633481] [2020-07-07 11:36:18,720 INFO L92 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 [2020-07-07 11:36:18,854 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:36:18,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:18,860 INFO L264 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-07 11:36:18,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:23,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:23,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 110 [2020-07-07 11:36:23,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625565176] [2020-07-07 11:36:23,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2020-07-07 11:36:23,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:23,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2020-07-07 11:36:23,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2773, Invalid=9217, Unknown=0, NotChecked=0, Total=11990 [2020-07-07 11:36:23,106 INFO L87 Difference]: Start difference. First operand 302 states and 322 transitions. Second operand 110 states. [2020-07-07 11:36:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:26,378 INFO L93 Difference]: Finished difference Result 599 states and 727 transitions. [2020-07-07 11:36:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-07 11:36:26,378 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 367 [2020-07-07 11:36:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:26,381 INFO L225 Difference]: With dead ends: 599 [2020-07-07 11:36:26,381 INFO L226 Difference]: Without dead ends: 448 [2020-07-07 11:36:26,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5473, Invalid=15697, Unknown=0, NotChecked=0, Total=21170 [2020-07-07 11:36:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-07-07 11:36:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 304. [2020-07-07 11:36:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-07-07 11:36:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 324 transitions. [2020-07-07 11:36:26,401 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 324 transitions. Word has length 367 [2020-07-07 11:36:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:26,401 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 324 transitions. [2020-07-07 11:36:26,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 110 states. [2020-07-07 11:36:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 324 transitions. [2020-07-07 11:36:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-07-07 11:36:26,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:26,404 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] [2020-07-07 11:36:26,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:36:26,618 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1227173062, now seen corresponding path program 53 times [2020-07-07 11:36:26,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:26,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564742849] [2020-07-07 11:36:26,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:28,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564742849] [2020-07-07 11:36:28,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193434458] [2020-07-07 11:36:28,098 INFO L92 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 [2020-07-07 11:36:28,295 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2020-07-07 11:36:28,295 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:28,300 INFO L264 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 75 conjunts are in the unsatisfiable core [2020-07-07 11:36:28,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:28,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:36:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-07-07 11:36:28,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:28,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-07 11:36:28,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258384233] [2020-07-07 11:36:28,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-07 11:36:28,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:28,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-07 11:36:28,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=1055, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 11:36:28,475 INFO L87 Difference]: Start difference. First operand 304 states and 324 transitions. Second operand 43 states. [2020-07-07 11:36:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:29,075 INFO L93 Difference]: Finished difference Result 319 states and 340 transitions. [2020-07-07 11:36:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-07 11:36:29,076 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 369 [2020-07-07 11:36:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:29,079 INFO L225 Difference]: With dead ends: 319 [2020-07-07 11:36:29,079 INFO L226 Difference]: Without dead ends: 317 [2020-07-07 11:36:29,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=757, Invalid=1135, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 11:36:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-07-07 11:36:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2020-07-07 11:36:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-07-07 11:36:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 337 transitions. [2020-07-07 11:36:29,094 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 337 transitions. Word has length 369 [2020-07-07 11:36:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:29,094 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 337 transitions. [2020-07-07 11:36:29,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-07 11:36:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 337 transitions. [2020-07-07 11:36:29,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-07-07 11:36:29,097 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:29,097 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] [2020-07-07 11:36:29,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-07 11:36:29,311 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1586365096, now seen corresponding path program 54 times [2020-07-07 11:36:29,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:29,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125944141] [2020-07-07 11:36:29,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:33,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125944141] [2020-07-07 11:36:33,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020990976] [2020-07-07 11:36:33,054 INFO L92 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 [2020-07-07 11:36:33,244 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2020-07-07 11:36:33,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:33,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 77 conjunts are in the unsatisfiable core [2020-07-07 11:36:33,251 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2812 proven. 1332 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:38,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:38,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 115 [2020-07-07 11:36:38,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530945376] [2020-07-07 11:36:38,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-07-07 11:36:38,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-07-07 11:36:38,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3040, Invalid=10070, Unknown=0, NotChecked=0, Total=13110 [2020-07-07 11:36:38,152 INFO L87 Difference]: Start difference. First operand 316 states and 337 transitions. Second operand 115 states. [2020-07-07 11:36:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:41,901 INFO L93 Difference]: Finished difference Result 627 states and 759 transitions. [2020-07-07 11:36:41,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-07 11:36:41,902 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 385 [2020-07-07 11:36:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:41,905 INFO L225 Difference]: With dead ends: 627 [2020-07-07 11:36:41,905 INFO L226 Difference]: Without dead ends: 466 [2020-07-07 11:36:41,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4771 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=5889, Invalid=17063, Unknown=0, NotChecked=0, Total=22952 [2020-07-07 11:36:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-07 11:36:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 318. [2020-07-07 11:36:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-07-07 11:36:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 339 transitions. [2020-07-07 11:36:41,919 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 339 transitions. Word has length 385 [2020-07-07 11:36:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:41,919 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 339 transitions. [2020-07-07 11:36:41,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-07-07 11:36:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 339 transitions. [2020-07-07 11:36:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-07-07 11:36:41,921 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:41,921 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] [2020-07-07 11:36:42,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-07-07 11:36:42,122 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash -468415411, now seen corresponding path program 55 times [2020-07-07 11:36:42,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:42,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208724] [2020-07-07 11:36:42,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:46,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208724] [2020-07-07 11:36:46,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795145439] [2020-07-07 11:36:46,067 INFO L92 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 [2020-07-07 11:36:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:46,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-07 11:36:46,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:51,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:51,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 116 [2020-07-07 11:36:51,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474303417] [2020-07-07 11:36:51,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2020-07-07 11:36:51,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:51,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2020-07-07 11:36:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=10261, Unknown=0, NotChecked=0, Total=13340 [2020-07-07 11:36:51,256 INFO L87 Difference]: Start difference. First operand 318 states and 339 transitions. Second operand 116 states. [2020-07-07 11:36:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:55,292 INFO L93 Difference]: Finished difference Result 631 states and 766 transitions. [2020-07-07 11:36:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-07 11:36:55,292 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 387 [2020-07-07 11:36:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:55,294 INFO L225 Difference]: With dead ends: 631 [2020-07-07 11:36:55,294 INFO L226 Difference]: Without dead ends: 472 [2020-07-07 11:36:55,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4847 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=6081, Invalid=17481, Unknown=0, NotChecked=0, Total=23562 [2020-07-07 11:36:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-07-07 11:36:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 320. [2020-07-07 11:36:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-07-07 11:36:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 341 transitions. [2020-07-07 11:36:55,311 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 341 transitions. Word has length 387 [2020-07-07 11:36:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:55,311 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 341 transitions. [2020-07-07 11:36:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 116 states. [2020-07-07 11:36:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 341 transitions. [2020-07-07 11:36:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-07 11:36:55,314 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:55,314 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] [2020-07-07 11:36:55,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:36:55,528 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 572473522, now seen corresponding path program 56 times [2020-07-07 11:36:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:55,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412669182] [2020-07-07 11:36:55,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:36:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:57,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412669182] [2020-07-07 11:36:57,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463948885] [2020-07-07 11:36:57,115 INFO L92 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 [2020-07-07 11:36:57,260 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:36:57,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:36:57,263 INFO L264 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-07 11:36:57,267 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:36:57,289 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:36:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-07-07 11:36:57,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:36:57,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-07 11:36:57,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5926932] [2020-07-07 11:36:57,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-07 11:36:57,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-07 11:36:57,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=830, Invalid=1150, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 11:36:57,503 INFO L87 Difference]: Start difference. First operand 320 states and 341 transitions. Second operand 45 states. [2020-07-07 11:36:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:36:58,193 INFO L93 Difference]: Finished difference Result 335 states and 357 transitions. [2020-07-07 11:36:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 11:36:58,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 389 [2020-07-07 11:36:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:36:58,197 INFO L225 Difference]: With dead ends: 335 [2020-07-07 11:36:58,197 INFO L226 Difference]: Without dead ends: 333 [2020-07-07 11:36:58,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=836, Invalid=1234, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 11:36:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-07-07 11:36:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2020-07-07 11:36:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-07-07 11:36:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 354 transitions. [2020-07-07 11:36:58,211 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 354 transitions. Word has length 389 [2020-07-07 11:36:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:36:58,212 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 354 transitions. [2020-07-07 11:36:58,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-07 11:36:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 354 transitions. [2020-07-07 11:36:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-07 11:36:58,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:36:58,215 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] [2020-07-07 11:36:58,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-07-07 11:36:58,416 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:36:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:36:58,416 INFO L82 PathProgramCache]: Analyzing trace with hash -73744748, now seen corresponding path program 57 times [2020-07-07 11:36:58,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:36:58,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166884391] [2020-07-07 11:36:58,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:36:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:02,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166884391] [2020-07-07 11:37:02,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48504009] [2020-07-07 11:37:02,745 INFO L92 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 [2020-07-07 11:37:02,955 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-07-07 11:37:02,955 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:37:02,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 81 conjunts are in the unsatisfiable core [2020-07-07 11:37:02,964 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:37:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:08,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:37:08,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 121 [2020-07-07 11:37:08,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927933559] [2020-07-07 11:37:08,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-07-07 11:37:08,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:37:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-07-07 11:37:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3360, Invalid=11160, Unknown=0, NotChecked=0, Total=14520 [2020-07-07 11:37:08,760 INFO L87 Difference]: Start difference. First operand 332 states and 354 transitions. Second operand 121 states. [2020-07-07 11:37:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:37:13,286 INFO L93 Difference]: Finished difference Result 659 states and 798 transitions. [2020-07-07 11:37:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-07 11:37:13,288 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 405 [2020-07-07 11:37:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:37:13,290 INFO L225 Difference]: With dead ends: 659 [2020-07-07 11:37:13,290 INFO L226 Difference]: Without dead ends: 490 [2020-07-07 11:37:13,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5302 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=6519, Invalid=18921, Unknown=0, NotChecked=0, Total=25440 [2020-07-07 11:37:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-07-07 11:37:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 334. [2020-07-07 11:37:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-07-07 11:37:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2020-07-07 11:37:13,306 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 405 [2020-07-07 11:37:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:37:13,306 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2020-07-07 11:37:13,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 121 states. [2020-07-07 11:37:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2020-07-07 11:37:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-07-07 11:37:13,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:37:13,308 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] [2020-07-07 11:37:13,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:37:13,510 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:37:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:37:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2082014137, now seen corresponding path program 58 times [2020-07-07 11:37:13,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:37:13,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019309294] [2020-07-07 11:37:13,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:37:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:18,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019309294] [2020-07-07 11:37:18,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428043906] [2020-07-07 11:37:18,122 INFO L92 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 [2020-07-07 11:37:18,277 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:37:18,277 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:37:18,281 INFO L264 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-07 11:37:18,285 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:37:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3120 proven. 1560 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:24,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:37:24,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 122 [2020-07-07 11:37:24,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125561136] [2020-07-07 11:37:24,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2020-07-07 11:37:24,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:37:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2020-07-07 11:37:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3401, Invalid=11361, Unknown=0, NotChecked=0, Total=14762 [2020-07-07 11:37:24,350 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 122 states. [2020-07-07 11:37:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:37:28,664 INFO L93 Difference]: Finished difference Result 663 states and 805 transitions. [2020-07-07 11:37:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-07 11:37:28,665 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 407 [2020-07-07 11:37:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:37:28,667 INFO L225 Difference]: With dead ends: 663 [2020-07-07 11:37:28,667 INFO L226 Difference]: Without dead ends: 496 [2020-07-07 11:37:28,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5382 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=6721, Invalid=19361, Unknown=0, NotChecked=0, Total=26082 [2020-07-07 11:37:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-07-07 11:37:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 336. [2020-07-07 11:37:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-07-07 11:37:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 358 transitions. [2020-07-07 11:37:28,686 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 358 transitions. Word has length 407 [2020-07-07 11:37:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:37:28,686 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 358 transitions. [2020-07-07 11:37:28,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 122 states. [2020-07-07 11:37:28,687 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 358 transitions. [2020-07-07 11:37:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-07 11:37:28,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:37:28,689 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] [2020-07-07 11:37:28,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-07-07 11:37:28,905 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:37:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:37:28,906 INFO L82 PathProgramCache]: Analyzing trace with hash -702901346, now seen corresponding path program 59 times [2020-07-07 11:37:28,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:37:28,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480622797] [2020-07-07 11:37:28,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:37:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:30,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480622797] [2020-07-07 11:37:30,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039551912] [2020-07-07 11:37:30,806 INFO L92 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 [2020-07-07 11:37:31,045 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2020-07-07 11:37:31,045 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:37:31,051 INFO L264 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 83 conjunts are in the unsatisfiable core [2020-07-07 11:37:31,054 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:37:31,070 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:37:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-07-07 11:37:31,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:37:31,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-07 11:37:31,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630456312] [2020-07-07 11:37:31,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-07 11:37:31,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:37:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-07 11:37:31,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=1249, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 11:37:31,236 INFO L87 Difference]: Start difference. First operand 336 states and 358 transitions. Second operand 47 states. [2020-07-07 11:37:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:37:31,951 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2020-07-07 11:37:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 11:37:31,952 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 409 [2020-07-07 11:37:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:37:31,954 INFO L225 Difference]: With dead ends: 351 [2020-07-07 11:37:31,954 INFO L226 Difference]: Without dead ends: 349 [2020-07-07 11:37:31,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=919, Invalid=1337, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 11:37:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-07-07 11:37:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2020-07-07 11:37:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-07-07 11:37:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 371 transitions. [2020-07-07 11:37:31,968 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 371 transitions. Word has length 409 [2020-07-07 11:37:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:37:31,969 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 371 transitions. [2020-07-07 11:37:31,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-07 11:37:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 371 transitions. [2020-07-07 11:37:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-07-07 11:37:31,971 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:37:31,972 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] [2020-07-07 11:37:32,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:37:32,178 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:37:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:37:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash 524990848, now seen corresponding path program 60 times [2020-07-07 11:37:32,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:37:32,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228875540] [2020-07-07 11:37:32,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:37:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:37:37,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228875540] [2020-07-07 11:37:37,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622111415] [2020-07-07 11:37:37,224 INFO L92 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 [2020-07-07 11:37:37,443 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2020-07-07 11:37:37,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:37:37,448 INFO L264 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 85 conjunts are in the unsatisfiable core [2020-07-07 11:37:37,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:37:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:37:44,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:37:44,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 127 [2020-07-07 11:37:44,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669146094] [2020-07-07 11:37:44,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2020-07-07 11:37:44,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:37:44,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2020-07-07 11:37:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3696, Invalid=12306, Unknown=0, NotChecked=0, Total=16002 [2020-07-07 11:37:44,406 INFO L87 Difference]: Start difference. First operand 348 states and 371 transitions. Second operand 127 states. [2020-07-07 11:37:49,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:37:49,642 INFO L93 Difference]: Finished difference Result 691 states and 837 transitions. [2020-07-07 11:37:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-07 11:37:49,643 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 425 [2020-07-07 11:37:49,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:37:49,646 INFO L225 Difference]: With dead ends: 691 [2020-07-07 11:37:49,647 INFO L226 Difference]: Without dead ends: 514 [2020-07-07 11:37:49,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5861 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=7181, Invalid=20875, Unknown=0, NotChecked=0, Total=28056 [2020-07-07 11:37:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-07-07 11:37:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 350. [2020-07-07 11:37:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-07-07 11:37:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 373 transitions. [2020-07-07 11:37:49,667 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 373 transitions. Word has length 425 [2020-07-07 11:37:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:37:49,667 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 373 transitions. [2020-07-07 11:37:49,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 127 states. [2020-07-07 11:37:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 373 transitions. [2020-07-07 11:37:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-07 11:37:49,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:37:49,670 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] [2020-07-07 11:37:49,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2020-07-07 11:37:49,884 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:37:49,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:37:49,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2129659355, now seen corresponding path program 61 times [2020-07-07 11:37:49,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:37:49,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629029231] [2020-07-07 11:37:49,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:37:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:37:55,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629029231] [2020-07-07 11:37:55,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279830553] [2020-07-07 11:37:55,281 INFO L92 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 [2020-07-07 11:37:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:37:55,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-07 11:37:55,445 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:38:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 3444 proven. 1722 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:38:02,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:38:02,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 128 [2020-07-07 11:38:02,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443782426] [2020-07-07 11:38:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2020-07-07 11:38:02,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:38:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2020-07-07 11:38:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3739, Invalid=12517, Unknown=0, NotChecked=0, Total=16256 [2020-07-07 11:38:02,710 INFO L87 Difference]: Start difference. First operand 350 states and 373 transitions. Second operand 128 states. [2020-07-07 11:38:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:08,464 INFO L93 Difference]: Finished difference Result 695 states and 844 transitions. [2020-07-07 11:38:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-07 11:38:08,465 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 427 [2020-07-07 11:38:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:08,468 INFO L225 Difference]: With dead ends: 695 [2020-07-07 11:38:08,468 INFO L226 Difference]: Without dead ends: 520 [2020-07-07 11:38:08,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5945 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=7393, Invalid=21337, Unknown=0, NotChecked=0, Total=28730 [2020-07-07 11:38:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-07-07 11:38:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 352. [2020-07-07 11:38:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-07-07 11:38:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 375 transitions. [2020-07-07 11:38:08,489 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 375 transitions. Word has length 427 [2020-07-07 11:38:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:08,490 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 375 transitions. [2020-07-07 11:38:08,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 128 states. [2020-07-07 11:38:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 375 transitions. [2020-07-07 11:38:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-07-07 11:38:08,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:38:08,493 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] [2020-07-07 11:38:08,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:38:08,708 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:38:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:38:08,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2037930614, now seen corresponding path program 62 times [2020-07-07 11:38:08,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:38:08,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427376046] [2020-07-07 11:38:08,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:38:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:38:10,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427376046] [2020-07-07 11:38:10,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962477289] [2020-07-07 11:38:10,969 INFO L92 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 [2020-07-07 11:38:11,130 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:38:11,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:38:11,134 INFO L264 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 87 conjunts are in the unsatisfiable core [2020-07-07 11:38:11,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:38:11,154 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:38:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-07-07 11:38:11,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:38:11,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-07 11:38:11,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832165234] [2020-07-07 11:38:11,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-07 11:38:11,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:38:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-07 11:38:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=1352, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 11:38:11,359 INFO L87 Difference]: Start difference. First operand 352 states and 375 transitions. Second operand 49 states. [2020-07-07 11:38:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:12,214 INFO L93 Difference]: Finished difference Result 367 states and 391 transitions. [2020-07-07 11:38:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-07 11:38:12,215 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 429 [2020-07-07 11:38:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:12,218 INFO L225 Difference]: With dead ends: 367 [2020-07-07 11:38:12,218 INFO L226 Difference]: Without dead ends: 365 [2020-07-07 11:38:12,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1006, Invalid=1444, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 11:38:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-07-07 11:38:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2020-07-07 11:38:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-07-07 11:38:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 388 transitions. [2020-07-07 11:38:12,234 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 388 transitions. Word has length 429 [2020-07-07 11:38:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:12,235 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 388 transitions. [2020-07-07 11:38:12,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-07 11:38:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 388 transitions. [2020-07-07 11:38:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-07-07 11:38:12,237 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:38:12,238 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] [2020-07-07 11:38:12,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2020-07-07 11:38:12,438 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:38:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:38:12,439 INFO L82 PathProgramCache]: Analyzing trace with hash -99716244, now seen corresponding path program 63 times [2020-07-07 11:38:12,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:38:12,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115475889] [2020-07-07 11:38:12,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:38:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3784 proven. 1806 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:38:18,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115475889] [2020-07-07 11:38:18,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190126000] [2020-07-07 11:38:18,608 INFO L92 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 [2020-07-07 11:38:18,860 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2020-07-07 11:38:18,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:38:18,865 INFO L264 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 89 conjunts are in the unsatisfiable core [2020-07-07 11:38:18,868 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:38:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3784 proven. 1806 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:38:27,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:38:27,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 133 [2020-07-07 11:38:27,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192944804] [2020-07-07 11:38:27,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2020-07-07 11:38:27,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:38:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2020-07-07 11:38:27,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4048, Invalid=13508, Unknown=0, NotChecked=0, Total=17556 [2020-07-07 11:38:27,440 INFO L87 Difference]: Start difference. First operand 364 states and 388 transitions. Second operand 133 states. [2020-07-07 11:38:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:34,205 INFO L93 Difference]: Finished difference Result 723 states and 876 transitions. [2020-07-07 11:38:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-07 11:38:34,207 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 445 [2020-07-07 11:38:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:34,210 INFO L225 Difference]: With dead ends: 723 [2020-07-07 11:38:34,211 INFO L226 Difference]: Without dead ends: 538 [2020-07-07 11:38:34,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6448 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=7875, Invalid=22925, Unknown=0, NotChecked=0, Total=30800 [2020-07-07 11:38:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-07-07 11:38:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 366. [2020-07-07 11:38:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-07-07 11:38:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 390 transitions. [2020-07-07 11:38:34,227 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 390 transitions. Word has length 445 [2020-07-07 11:38:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:34,228 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 390 transitions. [2020-07-07 11:38:34,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 133 states. [2020-07-07 11:38:34,228 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 390 transitions. [2020-07-07 11:38:34,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-07 11:38:34,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:38:34,230 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] [2020-07-07 11:38:34,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:38:34,433 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:38:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:38:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash 592048017, now seen corresponding path program 64 times [2020-07-07 11:38:34,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:38:34,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765063464] [2020-07-07 11:38:34,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:38:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:38:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:38:41,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765063464] [2020-07-07 11:38:41,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700018459] [2020-07-07 11:38:41,790 INFO L92 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 [2020-07-07 11:38:41,957 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:38:41,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:38:41,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-07 11:38:41,966 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:38:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3784 proven. 1892 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:38:51,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:38:51,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 134 [2020-07-07 11:38:51,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540686439] [2020-07-07 11:38:51,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2020-07-07 11:38:51,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:38:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2020-07-07 11:38:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4093, Invalid=13729, Unknown=0, NotChecked=0, Total=17822 [2020-07-07 11:38:51,072 INFO L87 Difference]: Start difference. First operand 366 states and 390 transitions. Second operand 134 states. [2020-07-07 11:38:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:58,092 INFO L93 Difference]: Finished difference Result 727 states and 883 transitions. [2020-07-07 11:38:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-07 11:38:58,092 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 447 [2020-07-07 11:38:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:58,094 INFO L225 Difference]: With dead ends: 727 [2020-07-07 11:38:58,094 INFO L226 Difference]: Without dead ends: 544 [2020-07-07 11:38:58,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6536 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=8097, Invalid=23409, Unknown=0, NotChecked=0, Total=31506 [2020-07-07 11:38:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-07-07 11:38:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 368. [2020-07-07 11:38:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-07-07 11:38:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 392 transitions. [2020-07-07 11:38:58,111 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 392 transitions. Word has length 447 [2020-07-07 11:38:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:58,111 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 392 transitions. [2020-07-07 11:38:58,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 134 states. [2020-07-07 11:38:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 392 transitions. [2020-07-07 11:38:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-07-07 11:38:58,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:38:58,113 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] [2020-07-07 11:38:58,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-07 11:38:58,314 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:38:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:38:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash -342428042, now seen corresponding path program 65 times [2020-07-07 11:38:58,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:38:58,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124818312] [2020-07-07 11:38:58,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:38:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:39:01,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124818312] [2020-07-07 11:39:01,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849844531] [2020-07-07 11:39:01,022 INFO L92 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 [2020-07-07 11:39:01,269 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2020-07-07 11:39:01,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:39:01,276 INFO L264 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 91 conjunts are in the unsatisfiable core [2020-07-07 11:39:01,279 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:39:01,297 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:39:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9376 backedges. 2066 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2020-07-07 11:39:01,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:39:01,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-07 11:39:01,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363564105] [2020-07-07 11:39:01,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-07 11:39:01,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:39:01,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-07 11:39:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=1459, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 11:39:01,537 INFO L87 Difference]: Start difference. First operand 368 states and 392 transitions. Second operand 51 states. [2020-07-07 11:39:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:39:02,652 INFO L93 Difference]: Finished difference Result 383 states and 408 transitions. [2020-07-07 11:39:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-07 11:39:02,654 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 449 [2020-07-07 11:39:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:39:02,656 INFO L225 Difference]: With dead ends: 383 [2020-07-07 11:39:02,656 INFO L226 Difference]: Without dead ends: 381 [2020-07-07 11:39:02,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1097, Invalid=1555, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 11:39:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-07-07 11:39:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 380. [2020-07-07 11:39:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-07-07 11:39:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 405 transitions. [2020-07-07 11:39:02,670 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 405 transitions. Word has length 449 [2020-07-07 11:39:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:39:02,671 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 405 transitions. [2020-07-07 11:39:02,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-07 11:39:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 405 transitions. [2020-07-07 11:39:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-07-07 11:39:02,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:39:02,673 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] [2020-07-07 11:39:02,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-07 11:39:02,874 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:39:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:39:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash -753505192, now seen corresponding path program 66 times [2020-07-07 11:39:02,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:39:02,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766808614] [2020-07-07 11:39:02,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:39:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:39:10,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766808614] [2020-07-07 11:39:10,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637789614] [2020-07-07 11:39:10,478 INFO L92 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 [2020-07-07 11:39:10,702 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2020-07-07 11:39:10,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:39:10,709 INFO L264 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 93 conjunts are in the unsatisfiable core [2020-07-07 11:39:10,712 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:39:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 4140 proven. 1980 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:39:21,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:39:21,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 139 [2020-07-07 11:39:21,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890695022] [2020-07-07 11:39:21,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2020-07-07 11:39:21,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:39:21,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2020-07-07 11:39:21,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4416, Invalid=14766, Unknown=0, NotChecked=0, Total=19182 [2020-07-07 11:39:21,320 INFO L87 Difference]: Start difference. First operand 380 states and 405 transitions. Second operand 139 states. [2020-07-07 11:39:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:39:29,269 INFO L93 Difference]: Finished difference Result 755 states and 915 transitions. [2020-07-07 11:39:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-07 11:39:29,272 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 465 [2020-07-07 11:39:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:39:29,275 INFO L225 Difference]: With dead ends: 755 [2020-07-07 11:39:29,275 INFO L226 Difference]: Without dead ends: 562 [2020-07-07 11:39:29,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7063 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=8601, Invalid=25071, Unknown=0, NotChecked=0, Total=33672 [2020-07-07 11:39:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-07-07 11:39:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 382. [2020-07-07 11:39:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-07-07 11:39:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 407 transitions. [2020-07-07 11:39:29,292 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 407 transitions. Word has length 465 [2020-07-07 11:39:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:39:29,292 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 407 transitions. [2020-07-07 11:39:29,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 139 states. [2020-07-07 11:39:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 407 transitions. [2020-07-07 11:39:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-07-07 11:39:29,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:39:29,296 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] [2020-07-07 11:39:29,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2020-07-07 11:39:29,511 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:39:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:39:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash -103324675, now seen corresponding path program 67 times [2020-07-07 11:39:29,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:39:29,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768655962] [2020-07-07 11:39:29,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:39:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:39:37,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768655962] [2020-07-07 11:39:37,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210762586] [2020-07-07 11:39:37,796 INFO L92 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 [2020-07-07 11:39:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:37,971 INFO L264 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-07 11:39:37,975 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:39:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:39:48,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:39:48,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 140 [2020-07-07 11:39:48,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760956226] [2020-07-07 11:39:48,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2020-07-07 11:39:48,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:39:48,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2020-07-07 11:39:48,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4463, Invalid=14997, Unknown=0, NotChecked=0, Total=19460 [2020-07-07 11:39:48,513 INFO L87 Difference]: Start difference. First operand 382 states and 407 transitions. Second operand 140 states. [2020-07-07 11:39:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:39:56,620 INFO L93 Difference]: Finished difference Result 759 states and 922 transitions. [2020-07-07 11:39:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-07-07 11:39:56,620 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 467 [2020-07-07 11:39:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:39:56,622 INFO L225 Difference]: With dead ends: 759 [2020-07-07 11:39:56,622 INFO L226 Difference]: Without dead ends: 568 [2020-07-07 11:39:56,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=8833, Invalid=25577, Unknown=0, NotChecked=0, Total=34410 [2020-07-07 11:39:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-07-07 11:39:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 384. [2020-07-07 11:39:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-07-07 11:39:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 409 transitions. [2020-07-07 11:39:56,640 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 409 transitions. Word has length 467 [2020-07-07 11:39:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:39:56,641 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 409 transitions. [2020-07-07 11:39:56,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 140 states. [2020-07-07 11:39:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 409 transitions. [2020-07-07 11:39:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-07-07 11:39:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:39:56,644 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] [2020-07-07 11:39:56,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:39:56,845 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:39:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:39:56,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894242, now seen corresponding path program 68 times [2020-07-07 11:39:56,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:39:56,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658464150] [2020-07-07 11:39:56,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:39:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:39:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:40:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658464150] [2020-07-07 11:40:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30345706] [2020-07-07 11:40:00,076 INFO L92 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 [2020-07-07 11:40:00,235 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:40:00,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:40:00,240 INFO L264 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 95 conjunts are in the unsatisfiable core [2020-07-07 11:40:00,244 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:40:00,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:40:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2020-07-07 11:40:00,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:40:00,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-07 11:40:00,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345015821] [2020-07-07 11:40:00,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-07 11:40:00,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:40:00,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-07 11:40:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=1570, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 11:40:00,529 INFO L87 Difference]: Start difference. First operand 384 states and 409 transitions. Second operand 53 states. [2020-07-07 11:40:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:40:01,929 INFO L93 Difference]: Finished difference Result 399 states and 425 transitions. [2020-07-07 11:40:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-07 11:40:01,931 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 469 [2020-07-07 11:40:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:40:01,934 INFO L225 Difference]: With dead ends: 399 [2020-07-07 11:40:01,934 INFO L226 Difference]: Without dead ends: 397 [2020-07-07 11:40:01,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1192, Invalid=1670, Unknown=0, NotChecked=0, Total=2862 [2020-07-07 11:40:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-07-07 11:40:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 396. [2020-07-07 11:40:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-07-07 11:40:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 422 transitions. [2020-07-07 11:40:01,950 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 422 transitions. Word has length 469 [2020-07-07 11:40:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:40:01,951 INFO L479 AbstractCegarLoop]: Abstraction has 396 states and 422 transitions. [2020-07-07 11:40:01,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-07 11:40:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 422 transitions. [2020-07-07 11:40:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-07-07 11:40:01,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:40:01,953 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] [2020-07-07 11:40:02,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:40:02,154 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:40:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:40:02,155 INFO L82 PathProgramCache]: Analyzing trace with hash 676537412, now seen corresponding path program 69 times [2020-07-07 11:40:02,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:40:02,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048933851] [2020-07-07 11:40:02,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:40:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4512 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:40:10,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048933851] [2020-07-07 11:40:10,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544717221] [2020-07-07 11:40:10,915 INFO L92 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 [2020-07-07 11:40:11,161 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2020-07-07 11:40:11,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:40:11,166 INFO L264 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-07 11:40:11,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:40:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4512 proven. 2162 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:40:22,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:40:22,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 145 [2020-07-07 11:40:22,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186087014] [2020-07-07 11:40:22,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2020-07-07 11:40:22,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:40:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2020-07-07 11:40:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4800, Invalid=16080, Unknown=0, NotChecked=0, Total=20880 [2020-07-07 11:40:22,790 INFO L87 Difference]: Start difference. First operand 396 states and 422 transitions. Second operand 145 states. [2020-07-07 11:40:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:40:31,653 INFO L93 Difference]: Finished difference Result 787 states and 954 transitions. [2020-07-07 11:40:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-07-07 11:40:31,655 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 485 [2020-07-07 11:40:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:40:31,657 INFO L225 Difference]: With dead ends: 787 [2020-07-07 11:40:31,657 INFO L226 Difference]: Without dead ends: 586 [2020-07-07 11:40:31,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7706 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=9359, Invalid=27313, Unknown=0, NotChecked=0, Total=36672 [2020-07-07 11:40:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-07 11:40:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 398. [2020-07-07 11:40:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-07-07 11:40:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 424 transitions. [2020-07-07 11:40:31,676 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 424 transitions. Word has length 485 [2020-07-07 11:40:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:40:31,676 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 424 transitions. [2020-07-07 11:40:31,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 145 states. [2020-07-07 11:40:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 424 transitions. [2020-07-07 11:40:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-07-07 11:40:31,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:40:31,679 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] [2020-07-07 11:40:31,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:40:31,881 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:40:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:40:31,882 INFO L82 PathProgramCache]: Analyzing trace with hash 579393385, now seen corresponding path program 70 times [2020-07-07 11:40:31,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:40:31,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362292214] [2020-07-07 11:40:31,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:40:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:40:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:40:41,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362292214] [2020-07-07 11:40:41,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233795858] [2020-07-07 11:40:41,216 INFO L92 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 [2020-07-07 11:40:41,390 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:40:41,390 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:40:41,396 INFO L264 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-07 11:40:41,401 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:40:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4512 proven. 2256 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:40:54,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:40:54,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 146 [2020-07-07 11:40:54,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840023379] [2020-07-07 11:40:54,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2020-07-07 11:40:54,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:40:54,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2020-07-07 11:40:54,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4849, Invalid=16321, Unknown=0, NotChecked=0, Total=21170 [2020-07-07 11:40:54,033 INFO L87 Difference]: Start difference. First operand 398 states and 424 transitions. Second operand 146 states. [2020-07-07 11:41:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:03,636 INFO L93 Difference]: Finished difference Result 791 states and 961 transitions. [2020-07-07 11:41:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-07-07 11:41:03,636 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 487 [2020-07-07 11:41:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:03,638 INFO L225 Difference]: With dead ends: 791 [2020-07-07 11:41:03,638 INFO L226 Difference]: Without dead ends: 592 [2020-07-07 11:41:03,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7802 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2020-07-07 11:41:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-07-07 11:41:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 400. [2020-07-07 11:41:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-07-07 11:41:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 426 transitions. [2020-07-07 11:41:03,656 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 426 transitions. Word has length 487 [2020-07-07 11:41:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:03,656 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 426 transitions. [2020-07-07 11:41:03,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 146 states. [2020-07-07 11:41:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 426 transitions. [2020-07-07 11:41:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-07 11:41:03,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:41:03,658 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] [2020-07-07 11:41:03,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-07-07 11:41:03,859 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:41:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:41:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1713263950, now seen corresponding path program 71 times [2020-07-07 11:41:03,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:41:03,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815557392] [2020-07-07 11:41:03,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:41:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:41:07,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815557392] [2020-07-07 11:41:07,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449147104] [2020-07-07 11:41:07,665 INFO L92 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 [2020-07-07 11:41:07,979 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2020-07-07 11:41:07,980 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:41:07,985 INFO L264 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 99 conjunts are in the unsatisfiable core [2020-07-07 11:41:07,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:41:08,007 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:41:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11188 backedges. 2446 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2020-07-07 11:41:08,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:41:08,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-07 11:41:08,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177660595] [2020-07-07 11:41:08,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-07 11:41:08,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:41:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-07 11:41:08,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1285, Invalid=1685, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 11:41:08,276 INFO L87 Difference]: Start difference. First operand 400 states and 426 transitions. Second operand 55 states. [2020-07-07 11:41:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:09,927 INFO L93 Difference]: Finished difference Result 415 states and 442 transitions. [2020-07-07 11:41:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-07 11:41:09,929 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 489 [2020-07-07 11:41:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:09,932 INFO L225 Difference]: With dead ends: 415 [2020-07-07 11:41:09,932 INFO L226 Difference]: Without dead ends: 413 [2020-07-07 11:41:09,933 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 [2020-07-07 11:41:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-07-07 11:41:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2020-07-07 11:41:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-07-07 11:41:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 439 transitions. [2020-07-07 11:41:09,950 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 439 transitions. Word has length 489 [2020-07-07 11:41:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:09,950 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 439 transitions. [2020-07-07 11:41:09,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-07 11:41:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 439 transitions. [2020-07-07 11:41:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-07-07 11:41:09,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:41:09,952 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] [2020-07-07 11:41:10,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:41:10,153 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:41:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:41:10,154 INFO L82 PathProgramCache]: Analyzing trace with hash -831186128, now seen corresponding path program 72 times [2020-07-07 11:41:10,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:41:10,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511829760] [2020-07-07 11:41:10,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:41:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:41:20,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511829760] [2020-07-07 11:41:20,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917481131] [2020-07-07 11:41:20,938 INFO L92 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 [2020-07-07 11:41:21,195 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2020-07-07 11:41:21,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:41:21,200 INFO L264 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 101 conjunts are in the unsatisfiable core [2020-07-07 11:41:21,205 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:41:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11956 backedges. 4900 proven. 2352 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:41:35,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:41:35,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 151 [2020-07-07 11:41:35,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816128045] [2020-07-07 11:41:35,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2020-07-07 11:41:35,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:41:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2020-07-07 11:41:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5200, Invalid=17450, Unknown=0, NotChecked=0, Total=22650 [2020-07-07 11:41:35,785 INFO L87 Difference]: Start difference. First operand 412 states and 439 transitions. Second operand 151 states. [2020-07-07 11:41:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:41:46,479 INFO L93 Difference]: Finished difference Result 819 states and 993 transitions. [2020-07-07 11:41:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-07-07 11:41:46,482 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 505 [2020-07-07 11:41:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:41:46,486 INFO L225 Difference]: With dead ends: 819 [2020-07-07 11:41:46,486 INFO L226 Difference]: Without dead ends: 610 [2020-07-07 11:41:46,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8377 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=10149, Invalid=29651, Unknown=0, NotChecked=0, Total=39800 [2020-07-07 11:41:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-07-07 11:41:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 414. [2020-07-07 11:41:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-07-07 11:41:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 441 transitions. [2020-07-07 11:41:46,505 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 441 transitions. Word has length 505 [2020-07-07 11:41:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:41:46,506 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 441 transitions. [2020-07-07 11:41:46,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 151 states. [2020-07-07 11:41:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 441 transitions. [2020-07-07 11:41:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-07-07 11:41:46,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:41:46,508 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] [2020-07-07 11:41:46,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:41:46,709 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:41:46,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:41:46,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1643039189, now seen corresponding path program 73 times [2020-07-07 11:41:46,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:41:46,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337870914] [2020-07-07 11:41:46,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:41:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:41:58,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337870914] [2020-07-07 11:41:58,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077893633] [2020-07-07 11:41:58,381 INFO L92 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 [2020-07-07 11:41:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:41:58,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-07 11:41:58,577 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:42:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4900 proven. 2450 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:42:14,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:42:14,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 152 [2020-07-07 11:42:14,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136023369] [2020-07-07 11:42:14,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2020-07-07 11:42:14,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:42:14,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2020-07-07 11:42:14,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5251, Invalid=17701, Unknown=0, NotChecked=0, Total=22952 [2020-07-07 11:42:14,213 INFO L87 Difference]: Start difference. First operand 414 states and 441 transitions. Second operand 152 states. [2020-07-07 11:42:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:42:26,559 INFO L93 Difference]: Finished difference Result 823 states and 1000 transitions. [2020-07-07 11:42:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-07-07 11:42:26,560 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 507 [2020-07-07 11:42:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:42:26,564 INFO L225 Difference]: With dead ends: 823 [2020-07-07 11:42:26,564 INFO L226 Difference]: Without dead ends: 616 [2020-07-07 11:42:26,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8477 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=10401, Invalid=30201, Unknown=0, NotChecked=0, Total=40602 [2020-07-07 11:42:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-07-07 11:42:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 416. [2020-07-07 11:42:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-07-07 11:42:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 443 transitions. [2020-07-07 11:42:26,590 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 443 transitions. Word has length 507 [2020-07-07 11:42:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:42:26,590 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 443 transitions. [2020-07-07 11:42:26,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 152 states. [2020-07-07 11:42:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 443 transitions. [2020-07-07 11:42:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-07-07 11:42:26,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:42:26,593 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] [2020-07-07 11:42:26,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:42:26,794 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:42:26,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:42:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash -38313158, now seen corresponding path program 74 times [2020-07-07 11:42:26,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:42:26,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527659862] [2020-07-07 11:42:26,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:42:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:42:31,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527659862] [2020-07-07 11:42:31,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610984477] [2020-07-07 11:42:31,470 INFO L92 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 [2020-07-07 11:42:31,649 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:42:31,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:42:31,654 INFO L264 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 103 conjunts are in the unsatisfiable core [2020-07-07 11:42:31,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:42:31,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:42:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12154 backedges. 2648 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2020-07-07 11:42:31,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:42:31,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-07 11:42:31,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527197567] [2020-07-07 11:42:31,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-07 11:42:31,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:42:31,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-07 11:42:31,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1388, Invalid=1804, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 11:42:31,978 INFO L87 Difference]: Start difference. First operand 416 states and 443 transitions. Second operand 57 states. [2020-07-07 11:42:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:42:33,984 INFO L93 Difference]: Finished difference Result 431 states and 459 transitions. [2020-07-07 11:42:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-07 11:42:33,987 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 509 [2020-07-07 11:42:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:42:33,990 INFO L225 Difference]: With dead ends: 431 [2020-07-07 11:42:33,990 INFO L226 Difference]: Without dead ends: 429 [2020-07-07 11:42:33,990 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 [2020-07-07 11:42:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-07 11:42:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 428. [2020-07-07 11:42:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-07-07 11:42:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 456 transitions. [2020-07-07 11:42:34,010 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 456 transitions. Word has length 509 [2020-07-07 11:42:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:42:34,010 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 456 transitions. [2020-07-07 11:42:34,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-07 11:42:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 456 transitions. [2020-07-07 11:42:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-07-07 11:42:34,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:42:34,013 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] [2020-07-07 11:42:34,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2020-07-07 11:42:34,214 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:42:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:42:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash 283955484, now seen corresponding path program 75 times [2020-07-07 11:42:34,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:42:34,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867762311] [2020-07-07 11:42:34,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:42:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:42:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5304 proven. 2550 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:42:47,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867762311] [2020-07-07 11:42:47,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761411493] [2020-07-07 11:42:47,164 INFO L92 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 [2020-07-07 11:42:47,435 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2020-07-07 11:42:47,435 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:42:47,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 105 conjunts are in the unsatisfiable core [2020-07-07 11:42:47,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:43:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12954 backedges. 5304 proven. 2550 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:43:05,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:43:05,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 157 [2020-07-07 11:43:05,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630306733] [2020-07-07 11:43:05,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2020-07-07 11:43:05,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:43:05,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2020-07-07 11:43:05,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5616, Invalid=18876, Unknown=0, NotChecked=0, Total=24492 [2020-07-07 11:43:05,819 INFO L87 Difference]: Start difference. First operand 428 states and 456 transitions. Second operand 157 states. [2020-07-07 11:43:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:43:19,270 INFO L93 Difference]: Finished difference Result 851 states and 1032 transitions. [2020-07-07 11:43:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-07-07 11:43:19,273 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 525 [2020-07-07 11:43:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:43:19,277 INFO L225 Difference]: With dead ends: 851 [2020-07-07 11:43:19,277 INFO L226 Difference]: Without dead ends: 634 [2020-07-07 11:43:19,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9076 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=10971, Invalid=32085, Unknown=0, NotChecked=0, Total=43056 [2020-07-07 11:43:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-07-07 11:43:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 430. [2020-07-07 11:43:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-07-07 11:43:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 458 transitions. [2020-07-07 11:43:19,298 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 458 transitions. Word has length 525 [2020-07-07 11:43:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:43:19,298 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 458 transitions. [2020-07-07 11:43:19,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 157 states. [2020-07-07 11:43:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 458 transitions. [2020-07-07 11:43:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-07-07 11:43:19,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:43:19,301 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] [2020-07-07 11:43:19,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:43:19,502 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:43:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:43:19,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1129954113, now seen corresponding path program 76 times [2020-07-07 11:43:19,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:43:19,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381554762] [2020-07-07 11:43:19,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:43:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:43:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:43:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381554762] [2020-07-07 11:43:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017003731] [2020-07-07 11:43:33,694 INFO L92 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 [2020-07-07 11:43:33,883 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:43:33,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:43:33,889 INFO L264 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-07 11:43:33,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:43:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13056 backedges. 5304 proven. 2652 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:43:53,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:43:53,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 158 [2020-07-07 11:43:53,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739031027] [2020-07-07 11:43:53,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2020-07-07 11:43:53,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:43:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2020-07-07 11:43:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5669, Invalid=19137, Unknown=0, NotChecked=0, Total=24806 [2020-07-07 11:43:53,140 INFO L87 Difference]: Start difference. First operand 430 states and 458 transitions. Second operand 158 states. [2020-07-07 11:44:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:44:07,848 INFO L93 Difference]: Finished difference Result 855 states and 1039 transitions. [2020-07-07 11:44:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-07-07 11:44:07,848 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 527 [2020-07-07 11:44:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:44:07,851 INFO L225 Difference]: With dead ends: 855 [2020-07-07 11:44:07,851 INFO L226 Difference]: Without dead ends: 640 [2020-07-07 11:44:07,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9180 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=11233, Invalid=32657, Unknown=0, NotChecked=0, Total=43890 [2020-07-07 11:44:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-07-07 11:44:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 432. [2020-07-07 11:44:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-07-07 11:44:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 460 transitions. [2020-07-07 11:44:07,881 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 460 transitions. Word has length 527 [2020-07-07 11:44:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:44:07,882 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 460 transitions. [2020-07-07 11:44:07,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 158 states. [2020-07-07 11:44:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 460 transitions. [2020-07-07 11:44:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-07-07 11:44:07,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:44:07,886 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] [2020-07-07 11:44:08,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:44:08,101 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:44:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:44:08,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1909149658, now seen corresponding path program 77 times [2020-07-07 11:44:08,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:44:08,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531601653] [2020-07-07 11:44:08,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:44:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:44:14,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531601653] [2020-07-07 11:44:14,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749891866] [2020-07-07 11:44:14,073 INFO L92 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 [2020-07-07 11:44:14,361 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2020-07-07 11:44:14,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:44:14,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 107 conjunts are in the unsatisfiable core [2020-07-07 11:44:14,371 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:44:14,388 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:44:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13160 backedges. 2858 proven. 5202 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2020-07-07 11:44:14,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:44:14,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-07 11:44:14,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427544277] [2020-07-07 11:44:14,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-07 11:44:14,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:44:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-07 11:44:14,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1495, Invalid=1927, Unknown=0, NotChecked=0, Total=3422 [2020-07-07 11:44:14,721 INFO L87 Difference]: Start difference. First operand 432 states and 460 transitions. Second operand 59 states. [2020-07-07 11:44:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:44:16,714 INFO L93 Difference]: Finished difference Result 447 states and 476 transitions. [2020-07-07 11:44:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-07 11:44:16,718 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 529 [2020-07-07 11:44:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:44:16,721 INFO L225 Difference]: With dead ends: 447 [2020-07-07 11:44:16,721 INFO L226 Difference]: Without dead ends: 445 [2020-07-07 11:44:16,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1501, Invalid=2039, Unknown=0, NotChecked=0, Total=3540 [2020-07-07 11:44:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-07-07 11:44:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 444. [2020-07-07 11:44:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-07-07 11:44:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 473 transitions. [2020-07-07 11:44:16,753 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 473 transitions. Word has length 529 [2020-07-07 11:44:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:44:16,753 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 473 transitions. [2020-07-07 11:44:16,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-07 11:44:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 473 transitions. [2020-07-07 11:44:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-07 11:44:16,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:44:16,756 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] [2020-07-07 11:44:16,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-07 11:44:16,957 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:44:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:44:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash -773143032, now seen corresponding path program 78 times [2020-07-07 11:44:16,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:44:16,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662347826] [2020-07-07 11:44:16,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:44:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:44:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5724 proven. 2756 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:44:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662347826] [2020-07-07 11:44:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053993170] [2020-07-07 11:44:32,558 INFO L92 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 [2020-07-07 11:44:32,854 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 54 check-sat command(s) [2020-07-07 11:44:32,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:44:32,861 INFO L264 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 109 conjunts are in the unsatisfiable core [2020-07-07 11:44:32,865 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:44:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13992 backedges. 5724 proven. 2756 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:44:55,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:44:55,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 163 [2020-07-07 11:44:55,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404227960] [2020-07-07 11:44:55,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2020-07-07 11:44:55,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:44:55,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2020-07-07 11:44:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6048, Invalid=20358, Unknown=0, NotChecked=0, Total=26406 [2020-07-07 11:44:55,600 INFO L87 Difference]: Start difference. First operand 444 states and 473 transitions. Second operand 163 states. [2020-07-07 11:45:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:45:11,794 INFO L93 Difference]: Finished difference Result 883 states and 1071 transitions. [2020-07-07 11:45:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-07-07 11:45:11,798 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 545 [2020-07-07 11:45:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:45:11,801 INFO L225 Difference]: With dead ends: 883 [2020-07-07 11:45:11,801 INFO L226 Difference]: Without dead ends: 658 [2020-07-07 11:45:11,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9803 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=11825, Invalid=34615, Unknown=0, NotChecked=0, Total=46440 [2020-07-07 11:45:11,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-07-07 11:45:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 446. [2020-07-07 11:45:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-07-07 11:45:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 475 transitions. [2020-07-07 11:45:11,827 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 475 transitions. Word has length 545 [2020-07-07 11:45:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:45:11,827 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 475 transitions. [2020-07-07 11:45:11,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 163 states. [2020-07-07 11:45:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 475 transitions. [2020-07-07 11:45:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-07-07 11:45:11,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:45:11,830 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] [2020-07-07 11:45:12,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:45:12,031 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:45:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:45:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash 953822125, now seen corresponding path program 79 times [2020-07-07 11:45:12,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:45:12,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763586503] [2020-07-07 11:45:12,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:45:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:45:28,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763586503] [2020-07-07 11:45:28,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290919955] [2020-07-07 11:45:28,666 INFO L92 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 [2020-07-07 11:45:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:45:28,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-07 11:45:28,868 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:45:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5724 proven. 2862 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:45:52,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:45:52,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 164 [2020-07-07 11:45:52,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676837797] [2020-07-07 11:45:52,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2020-07-07 11:45:52,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:45:52,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2020-07-07 11:45:52,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6103, Invalid=20629, Unknown=0, NotChecked=0, Total=26732 [2020-07-07 11:45:52,900 INFO L87 Difference]: Start difference. First operand 446 states and 475 transitions. Second operand 164 states. [2020-07-07 11:46:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:46:10,890 INFO L93 Difference]: Finished difference Result 887 states and 1078 transitions. [2020-07-07 11:46:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-07-07 11:46:10,890 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 547 [2020-07-07 11:46:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:46:10,893 INFO L225 Difference]: With dead ends: 887 [2020-07-07 11:46:10,893 INFO L226 Difference]: Without dead ends: 664 [2020-07-07 11:46:10,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9911 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=12097, Invalid=35209, Unknown=0, NotChecked=0, Total=47306 [2020-07-07 11:46:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-07-07 11:46:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 448. [2020-07-07 11:46:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-07-07 11:46:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 477 transitions. [2020-07-07 11:46:10,918 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 477 transitions. Word has length 547 [2020-07-07 11:46:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:46:10,919 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 477 transitions. [2020-07-07 11:46:10,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 164 states. [2020-07-07 11:46:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 477 transitions. [2020-07-07 11:46:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-07-07 11:46:10,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:46:10,924 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] [2020-07-07 11:46:11,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:46:11,125 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:46:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:46:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1585005550, now seen corresponding path program 80 times [2020-07-07 11:46:11,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:46:11,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747588036] [2020-07-07 11:46:11,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:46:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 3076 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:46:17,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747588036] [2020-07-07 11:46:17,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310224873] [2020-07-07 11:46:17,906 INFO L92 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 [2020-07-07 11:46:18,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:46:18,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:46:18,106 INFO L264 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 111 conjunts are in the unsatisfiable core [2020-07-07 11:46:18,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:46:18,129 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:46:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14206 backedges. 3076 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2020-07-07 11:46:18,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:46:18,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-07 11:46:18,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620739468] [2020-07-07 11:46:18,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-07 11:46:18,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:46:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-07 11:46:18,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1606, Invalid=2054, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 11:46:18,518 INFO L87 Difference]: Start difference. First operand 448 states and 477 transitions. Second operand 61 states. [2020-07-07 11:46:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:46:21,531 INFO L93 Difference]: Finished difference Result 463 states and 493 transitions. [2020-07-07 11:46:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-07 11:46:21,536 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 549 [2020-07-07 11:46:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:46:21,538 INFO L225 Difference]: With dead ends: 463 [2020-07-07 11:46:21,538 INFO L226 Difference]: Without dead ends: 461 [2020-07-07 11:46:21,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1612, Invalid=2170, Unknown=0, NotChecked=0, Total=3782 [2020-07-07 11:46:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-07-07 11:46:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2020-07-07 11:46:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-07-07 11:46:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 490 transitions. [2020-07-07 11:46:21,565 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 490 transitions. Word has length 549 [2020-07-07 11:46:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:46:21,565 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 490 transitions. [2020-07-07 11:46:21,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-07 11:46:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 490 transitions. [2020-07-07 11:46:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-07-07 11:46:21,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:46:21,568 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:46:21,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:46:21,769 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:46:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:46:21,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1436583436, now seen corresponding path program 81 times [2020-07-07 11:46:21,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:46:21,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585567755] [2020-07-07 11:46:21,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:46:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:46:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15070 backedges. 6160 proven. 2970 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2020-07-07 11:46:40,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585567755] [2020-07-07 11:46:40,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825555956] [2020-07-07 11:46:40,568 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:46:40,885 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 56 check-sat command(s) [2020-07-07 11:46:40,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:46:40,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 113 conjunts are in the unsatisfiable core [2020-07-07 11:46:40,897 INFO L287 TraceCheckSpWp]: Computing forward predicates...