/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/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:15:55,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:15:55,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:15:55,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:15:55,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:15:55,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:15:55,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:15:55,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:15:55,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:15:55,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:15:55,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:15:55,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:15:55,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:15:55,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:15:55,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:15:55,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:15:55,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:15:55,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:15:55,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:15:55,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:15:55,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:15:55,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:15:55,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:15:55,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:15:55,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:15:55,180 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 11:15:55,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:15:55,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:15:55,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:15:55,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:15:55,208 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:15:55,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:15:55,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:15:55,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:15:55,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:15:55,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:15:55,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:15:55,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:15:55,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:15:55,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:15:55,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:15:55,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:15:55,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:15:55,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:15:55,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:15:55,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:15:55,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:15:55,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:15:55,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:15:55,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:15:55,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:15:55,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:15:55,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:15:55,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:15:55,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:15:55,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:15:55,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:15:55,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:15:55,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:15:55,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:15:55,586 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:15:55,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-07-07 11:15:55,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a2eac31/dbeeb00ed92a44358f1659e2e6fad80e/FLAGda8f11088 [2020-07-07 11:15:56,180 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:15:56,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_9.c [2020-07-07 11:15:56,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a2eac31/dbeeb00ed92a44358f1659e2e6fad80e/FLAGda8f11088 [2020-07-07 11:15:56,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38a2eac31/dbeeb00ed92a44358f1659e2e6fad80e [2020-07-07 11:15:56,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:15:56,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:15:56,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:56,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:15:56,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:15:56,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6f94b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56, skipping insertion in model container [2020-07-07 11:15:56,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:15:56,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:15:56,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:56,796 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:15:56,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:56,839 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:15:56,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56 WrapperNode [2020-07-07 11:15:56,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:56,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:15:56,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:15:56,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:15:56,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (1/1) ... [2020-07-07 11:15:56,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:15:56,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:15:56,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:15:56,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:15:56,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (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 11:15:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:15:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:15:57,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:15:57,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:15:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:15:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:15:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:15:57,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:15:57,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:15:57,360 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:15:57,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:57 BoogieIcfgContainer [2020-07-07 11:15:57,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:15:57,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:15:57,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:15:57,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:15:57,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:15:56" (1/3) ... [2020-07-07 11:15:57,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115f695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:57, skipping insertion in model container [2020-07-07 11:15:57,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:56" (2/3) ... [2020-07-07 11:15:57,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2115f695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:57, skipping insertion in model container [2020-07-07 11:15:57,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:57" (3/3) ... [2020-07-07 11:15:57,376 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-07-07 11:15:57,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:15:57,397 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:15:57,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:15:57,441 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:15:57,442 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:15:57,442 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:15:57,442 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:15:57,442 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:15:57,442 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:15:57,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:15:57,443 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:15:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-07 11:15:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:57,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:57,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:57,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash 691982780, now seen corresponding path program 1 times [2020-07-07 11:15:57,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:57,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924445611] [2020-07-07 11:15:57,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:57,690 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 11:15:57,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924445611] [2020-07-07 11:15:57,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:57,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:57,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168133394] [2020-07-07 11:15:57,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:57,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:57,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:57,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:57,724 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-07-07 11:15:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:57,784 INFO L93 Difference]: Finished difference Result 81 states and 138 transitions. [2020-07-07 11:15:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:57,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:57,800 INFO L225 Difference]: With dead ends: 81 [2020-07-07 11:15:57,800 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 11:15:57,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 11:15:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2020-07-07 11:15:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-07 11:15:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 81 transitions. [2020-07-07 11:15:57,850 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 81 transitions. Word has length 19 [2020-07-07 11:15:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:57,851 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 81 transitions. [2020-07-07 11:15:57,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 81 transitions. [2020-07-07 11:15:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:57,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:57,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:57,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:15:57,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash 950148218, now seen corresponding path program 1 times [2020-07-07 11:15:57,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:57,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442358312] [2020-07-07 11:15:57,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:57,920 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 11:15:57,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442358312] [2020-07-07 11:15:57,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:57,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:57,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551963052] [2020-07-07 11:15:57,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:57,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:57,925 INFO L87 Difference]: Start difference. First operand 46 states and 81 transitions. Second operand 3 states. [2020-07-07 11:15:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:57,961 INFO L93 Difference]: Finished difference Result 107 states and 192 transitions. [2020-07-07 11:15:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:57,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:57,964 INFO L225 Difference]: With dead ends: 107 [2020-07-07 11:15:57,964 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 11:15:57,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 11:15:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-07-07 11:15:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-07 11:15:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 113 transitions. [2020-07-07 11:15:57,979 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 113 transitions. Word has length 19 [2020-07-07 11:15:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:57,980 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 113 transitions. [2020-07-07 11:15:57,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 113 transitions. [2020-07-07 11:15:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:57,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:57,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:57,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:15:57,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash -23156596, now seen corresponding path program 1 times [2020-07-07 11:15:57,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:57,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945701097] [2020-07-07 11:15:57,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,105 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 11:15:58,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945701097] [2020-07-07 11:15:58,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690127182] [2020-07-07 11:15:58,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,108 INFO L87 Difference]: Start difference. First operand 64 states and 113 transitions. Second operand 3 states. [2020-07-07 11:15:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,140 INFO L93 Difference]: Finished difference Result 99 states and 171 transitions. [2020-07-07 11:15:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,143 INFO L225 Difference]: With dead ends: 99 [2020-07-07 11:15:58,143 INFO L226 Difference]: Without dead ends: 69 [2020-07-07 11:15:58,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-07 11:15:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-07-07 11:15:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-07 11:15:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 115 transitions. [2020-07-07 11:15:58,156 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 115 transitions. Word has length 20 [2020-07-07 11:15:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,156 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 115 transitions. [2020-07-07 11:15:58,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 115 transitions. [2020-07-07 11:15:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:58,158 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:15:58,159 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash -609962610, now seen corresponding path program 1 times [2020-07-07 11:15:58,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48059849] [2020-07-07 11:15:58,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,209 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 11:15:58,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48059849] [2020-07-07 11:15:58,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644030066] [2020-07-07 11:15:58,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,212 INFO L87 Difference]: Start difference. First operand 67 states and 115 transitions. Second operand 3 states. [2020-07-07 11:15:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,251 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2020-07-07 11:15:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,254 INFO L225 Difference]: With dead ends: 124 [2020-07-07 11:15:58,254 INFO L226 Difference]: Without dead ends: 122 [2020-07-07 11:15:58,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-07 11:15:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2020-07-07 11:15:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 11:15:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 152 transitions. [2020-07-07 11:15:58,269 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 152 transitions. Word has length 20 [2020-07-07 11:15:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,269 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 152 transitions. [2020-07-07 11:15:58,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 152 transitions. [2020-07-07 11:15:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:58,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:15:58,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,272 INFO L82 PathProgramCache]: Analyzing trace with hash -351797172, now seen corresponding path program 1 times [2020-07-07 11:15:58,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414656436] [2020-07-07 11:15:58,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,315 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 11:15:58,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414656436] [2020-07-07 11:15:58,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238002824] [2020-07-07 11:15:58,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,318 INFO L87 Difference]: Start difference. First operand 88 states and 152 transitions. Second operand 3 states. [2020-07-07 11:15:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,345 INFO L93 Difference]: Finished difference Result 204 states and 358 transitions. [2020-07-07 11:15:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,348 INFO L225 Difference]: With dead ends: 204 [2020-07-07 11:15:58,348 INFO L226 Difference]: Without dead ends: 124 [2020-07-07 11:15:58,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-07 11:15:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-07 11:15:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-07 11:15:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 210 transitions. [2020-07-07 11:15:58,369 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 210 transitions. Word has length 20 [2020-07-07 11:15:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,370 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 210 transitions. [2020-07-07 11:15:58,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 210 transitions. [2020-07-07 11:15:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:58,375 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:15:58,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1728757681, now seen corresponding path program 1 times [2020-07-07 11:15:58,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769334438] [2020-07-07 11:15:58,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,421 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 11:15:58,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769334438] [2020-07-07 11:15:58,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248942748] [2020-07-07 11:15:58,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,424 INFO L87 Difference]: Start difference. First operand 122 states and 210 transitions. Second operand 3 states. [2020-07-07 11:15:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,445 INFO L93 Difference]: Finished difference Result 183 states and 313 transitions. [2020-07-07 11:15:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,448 INFO L225 Difference]: With dead ends: 183 [2020-07-07 11:15:58,448 INFO L226 Difference]: Without dead ends: 126 [2020-07-07 11:15:58,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-07 11:15:58,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-07-07 11:15:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-07 11:15:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 210 transitions. [2020-07-07 11:15:58,465 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 210 transitions. Word has length 21 [2020-07-07 11:15:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,465 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 210 transitions. [2020-07-07 11:15:58,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 210 transitions. [2020-07-07 11:15:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:58,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:15:58,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1979403601, now seen corresponding path program 1 times [2020-07-07 11:15:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070683390] [2020-07-07 11:15:58,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,546 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 11:15:58,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070683390] [2020-07-07 11:15:58,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433723962] [2020-07-07 11:15:58,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,549 INFO L87 Difference]: Start difference. First operand 124 states and 210 transitions. Second operand 3 states. [2020-07-07 11:15:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,569 INFO L93 Difference]: Finished difference Result 228 states and 392 transitions. [2020-07-07 11:15:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,572 INFO L225 Difference]: With dead ends: 228 [2020-07-07 11:15:58,572 INFO L226 Difference]: Without dead ends: 226 [2020-07-07 11:15:58,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-07 11:15:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-07-07 11:15:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-07 11:15:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 282 transitions. [2020-07-07 11:15:58,597 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 282 transitions. Word has length 21 [2020-07-07 11:15:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,598 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 282 transitions. [2020-07-07 11:15:58,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 282 transitions. [2020-07-07 11:15:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:58,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:15:58,607 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2057398257, now seen corresponding path program 1 times [2020-07-07 11:15:58,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591616518] [2020-07-07 11:15:58,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,675 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 11:15:58,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591616518] [2020-07-07 11:15:58,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333116169] [2020-07-07 11:15:58,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,678 INFO L87 Difference]: Start difference. First operand 168 states and 282 transitions. Second operand 3 states. [2020-07-07 11:15:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,703 INFO L93 Difference]: Finished difference Result 392 states and 664 transitions. [2020-07-07 11:15:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,706 INFO L225 Difference]: With dead ends: 392 [2020-07-07 11:15:58,706 INFO L226 Difference]: Without dead ends: 234 [2020-07-07 11:15:58,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-07-07 11:15:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2020-07-07 11:15:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-07 11:15:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 386 transitions. [2020-07-07 11:15:58,729 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 386 transitions. Word has length 21 [2020-07-07 11:15:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,730 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 386 transitions. [2020-07-07 11:15:58,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 386 transitions. [2020-07-07 11:15:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:15:58,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:15:58,732 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1232183873, now seen corresponding path program 1 times [2020-07-07 11:15:58,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197608808] [2020-07-07 11:15:58,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,765 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 11:15:58,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197608808] [2020-07-07 11:15:58,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417985974] [2020-07-07 11:15:58,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,768 INFO L87 Difference]: Start difference. First operand 232 states and 386 transitions. Second operand 3 states. [2020-07-07 11:15:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,788 INFO L93 Difference]: Finished difference Result 348 states and 576 transitions. [2020-07-07 11:15:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-07 11:15:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,790 INFO L225 Difference]: With dead ends: 348 [2020-07-07 11:15:58,791 INFO L226 Difference]: Without dead ends: 238 [2020-07-07 11:15:58,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-07 11:15:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-07 11:15:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-07 11:15:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 386 transitions. [2020-07-07 11:15:58,819 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 386 transitions. Word has length 22 [2020-07-07 11:15:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,820 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 386 transitions. [2020-07-07 11:15:58,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 386 transitions. [2020-07-07 11:15:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:15:58,822 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:15:58,822 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,823 INFO L82 PathProgramCache]: Analyzing trace with hash 645377859, now seen corresponding path program 1 times [2020-07-07 11:15:58,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675889357] [2020-07-07 11:15:58,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,870 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 11:15:58,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675889357] [2020-07-07 11:15:58,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755387486] [2020-07-07 11:15:58,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,873 INFO L87 Difference]: Start difference. First operand 236 states and 386 transitions. Second operand 3 states. [2020-07-07 11:15:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,898 INFO L93 Difference]: Finished difference Result 428 states and 712 transitions. [2020-07-07 11:15:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-07 11:15:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,903 INFO L225 Difference]: With dead ends: 428 [2020-07-07 11:15:58,904 INFO L226 Difference]: Without dead ends: 426 [2020-07-07 11:15:58,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-07-07 11:15:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 328. [2020-07-07 11:15:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-07-07 11:15:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 526 transitions. [2020-07-07 11:15:58,925 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 526 transitions. Word has length 22 [2020-07-07 11:15:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:58,927 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 526 transitions. [2020-07-07 11:15:58,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 526 transitions. [2020-07-07 11:15:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 11:15:58,929 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:58,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:58,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:15:58,930 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash 903543297, now seen corresponding path program 1 times [2020-07-07 11:15:58,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:58,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86335834] [2020-07-07 11:15:58,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:58,958 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 11:15:58,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86335834] [2020-07-07 11:15:58,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:58,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:58,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170329799] [2020-07-07 11:15:58,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:58,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:58,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:58,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,960 INFO L87 Difference]: Start difference. First operand 328 states and 526 transitions. Second operand 3 states. [2020-07-07 11:15:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:58,991 INFO L93 Difference]: Finished difference Result 764 states and 1232 transitions. [2020-07-07 11:15:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:58,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-07 11:15:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:58,994 INFO L225 Difference]: With dead ends: 764 [2020-07-07 11:15:58,995 INFO L226 Difference]: Without dead ends: 450 [2020-07-07 11:15:58,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-07-07 11:15:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2020-07-07 11:15:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-07-07 11:15:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 710 transitions. [2020-07-07 11:15:59,015 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 710 transitions. Word has length 22 [2020-07-07 11:15:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,015 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 710 transitions. [2020-07-07 11:15:59,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 710 transitions. [2020-07-07 11:15:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:15:59,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:15:59,017 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1467908124, now seen corresponding path program 1 times [2020-07-07 11:15:59,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801084272] [2020-07-07 11:15:59,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,047 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 11:15:59,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801084272] [2020-07-07 11:15:59,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516594885] [2020-07-07 11:15:59,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,051 INFO L87 Difference]: Start difference. First operand 448 states and 710 transitions. Second operand 3 states. [2020-07-07 11:15:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,082 INFO L93 Difference]: Finished difference Result 672 states and 1060 transitions. [2020-07-07 11:15:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:15:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,086 INFO L225 Difference]: With dead ends: 672 [2020-07-07 11:15:59,087 INFO L226 Difference]: Without dead ends: 458 [2020-07-07 11:15:59,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-07-07 11:15:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2020-07-07 11:15:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-07-07 11:15:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 710 transitions. [2020-07-07 11:15:59,106 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 710 transitions. Word has length 23 [2020-07-07 11:15:59,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,107 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 710 transitions. [2020-07-07 11:15:59,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 710 transitions. [2020-07-07 11:15:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:15:59,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:15:59,110 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2054714138, now seen corresponding path program 1 times [2020-07-07 11:15:59,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286616853] [2020-07-07 11:15:59,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,154 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 11:15:59,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286616853] [2020-07-07 11:15:59,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050845372] [2020-07-07 11:15:59,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,157 INFO L87 Difference]: Start difference. First operand 456 states and 710 transitions. Second operand 3 states. [2020-07-07 11:15:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,183 INFO L93 Difference]: Finished difference Result 812 states and 1288 transitions. [2020-07-07 11:15:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:15:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,197 INFO L225 Difference]: With dead ends: 812 [2020-07-07 11:15:59,197 INFO L226 Difference]: Without dead ends: 810 [2020-07-07 11:15:59,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-07-07 11:15:59,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 648. [2020-07-07 11:15:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-07-07 11:15:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 982 transitions. [2020-07-07 11:15:59,225 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 982 transitions. Word has length 23 [2020-07-07 11:15:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,225 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 982 transitions. [2020-07-07 11:15:59,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 982 transitions. [2020-07-07 11:15:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:15:59,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:15:59,227 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1796548700, now seen corresponding path program 1 times [2020-07-07 11:15:59,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645775895] [2020-07-07 11:15:59,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,295 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 11:15:59,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645775895] [2020-07-07 11:15:59,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240129982] [2020-07-07 11:15:59,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,298 INFO L87 Difference]: Start difference. First operand 648 states and 982 transitions. Second operand 3 states. [2020-07-07 11:15:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,332 INFO L93 Difference]: Finished difference Result 1500 states and 2280 transitions. [2020-07-07 11:15:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:15:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,338 INFO L225 Difference]: With dead ends: 1500 [2020-07-07 11:15:59,339 INFO L226 Difference]: Without dead ends: 874 [2020-07-07 11:15:59,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-07-07 11:15:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2020-07-07 11:15:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-07-07 11:15:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1302 transitions. [2020-07-07 11:15:59,375 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1302 transitions. Word has length 23 [2020-07-07 11:15:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,375 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1302 transitions. [2020-07-07 11:15:59,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1302 transitions. [2020-07-07 11:15:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:15:59,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 11:15:59,378 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,379 INFO L82 PathProgramCache]: Analyzing trace with hash 728586230, now seen corresponding path program 1 times [2020-07-07 11:15:59,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368665595] [2020-07-07 11:15:59,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,406 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 11:15:59,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368665595] [2020-07-07 11:15:59,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224909936] [2020-07-07 11:15:59,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,409 INFO L87 Difference]: Start difference. First operand 872 states and 1302 transitions. Second operand 3 states. [2020-07-07 11:15:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,444 INFO L93 Difference]: Finished difference Result 1308 states and 1944 transitions. [2020-07-07 11:15:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-07 11:15:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,450 INFO L225 Difference]: With dead ends: 1308 [2020-07-07 11:15:59,450 INFO L226 Difference]: Without dead ends: 890 [2020-07-07 11:15:59,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-07-07 11:15:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2020-07-07 11:15:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-07 11:15:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1302 transitions. [2020-07-07 11:15:59,500 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1302 transitions. Word has length 24 [2020-07-07 11:15:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,500 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1302 transitions. [2020-07-07 11:15:59,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1302 transitions. [2020-07-07 11:15:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:15:59,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 11:15:59,503 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,503 INFO L82 PathProgramCache]: Analyzing trace with hash 141780216, now seen corresponding path program 1 times [2020-07-07 11:15:59,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110499952] [2020-07-07 11:15:59,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,529 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 11:15:59,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110499952] [2020-07-07 11:15:59,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633304252] [2020-07-07 11:15:59,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,534 INFO L87 Difference]: Start difference. First operand 888 states and 1302 transitions. Second operand 3 states. [2020-07-07 11:15:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,570 INFO L93 Difference]: Finished difference Result 1548 states and 2312 transitions. [2020-07-07 11:15:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-07 11:15:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,579 INFO L225 Difference]: With dead ends: 1548 [2020-07-07 11:15:59,579 INFO L226 Difference]: Without dead ends: 1546 [2020-07-07 11:15:59,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-07-07 11:15:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1288. [2020-07-07 11:15:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-07-07 11:15:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1830 transitions. [2020-07-07 11:15:59,634 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1830 transitions. Word has length 24 [2020-07-07 11:15:59,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,635 INFO L479 AbstractCegarLoop]: Abstraction has 1288 states and 1830 transitions. [2020-07-07 11:15:59,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1830 transitions. [2020-07-07 11:15:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:15:59,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 11:15:59,642 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,642 INFO L82 PathProgramCache]: Analyzing trace with hash 399945654, now seen corresponding path program 1 times [2020-07-07 11:15:59,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803784369] [2020-07-07 11:15:59,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,673 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 11:15:59,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803784369] [2020-07-07 11:15:59,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063056411] [2020-07-07 11:15:59,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,675 INFO L87 Difference]: Start difference. First operand 1288 states and 1830 transitions. Second operand 3 states. [2020-07-07 11:15:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,720 INFO L93 Difference]: Finished difference Result 2956 states and 4200 transitions. [2020-07-07 11:15:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-07 11:15:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,729 INFO L225 Difference]: With dead ends: 2956 [2020-07-07 11:15:59,729 INFO L226 Difference]: Without dead ends: 1706 [2020-07-07 11:15:59,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-07-07 11:15:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1704. [2020-07-07 11:15:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-07-07 11:15:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2374 transitions. [2020-07-07 11:15:59,787 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2374 transitions. Word has length 24 [2020-07-07 11:15:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,787 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2374 transitions. [2020-07-07 11:15:59,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2374 transitions. [2020-07-07 11:15:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:15:59,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 11:15:59,791 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash 100434809, now seen corresponding path program 1 times [2020-07-07 11:15:59,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110582103] [2020-07-07 11:15:59,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,817 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 11:15:59,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110582103] [2020-07-07 11:15:59,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296283099] [2020-07-07 11:15:59,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,820 INFO L87 Difference]: Start difference. First operand 1704 states and 2374 transitions. Second operand 3 states. [2020-07-07 11:15:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:59,863 INFO L93 Difference]: Finished difference Result 2556 states and 3544 transitions. [2020-07-07 11:15:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:59,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-07 11:15:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:59,873 INFO L225 Difference]: With dead ends: 2556 [2020-07-07 11:15:59,873 INFO L226 Difference]: Without dead ends: 1738 [2020-07-07 11:15:59,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-07-07 11:15:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1736. [2020-07-07 11:15:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-07-07 11:15:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2374 transitions. [2020-07-07 11:15:59,937 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2374 transitions. Word has length 25 [2020-07-07 11:15:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:59,938 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2374 transitions. [2020-07-07 11:15:59,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2374 transitions. [2020-07-07 11:15:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:15:59,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:59,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:59,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 11:15:59,942 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -486371205, now seen corresponding path program 1 times [2020-07-07 11:15:59,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:59,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758791654] [2020-07-07 11:15:59,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:59,973 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 11:15:59,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758791654] [2020-07-07 11:15:59,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:59,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:59,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756101505] [2020-07-07 11:15:59,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:59,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:59,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:59,977 INFO L87 Difference]: Start difference. First operand 1736 states and 2374 transitions. Second operand 3 states. [2020-07-07 11:16:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:00,035 INFO L93 Difference]: Finished difference Result 2956 states and 4104 transitions. [2020-07-07 11:16:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:00,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-07 11:16:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:00,049 INFO L225 Difference]: With dead ends: 2956 [2020-07-07 11:16:00,050 INFO L226 Difference]: Without dead ends: 2954 [2020-07-07 11:16:00,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-07-07 11:16:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2568. [2020-07-07 11:16:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-07-07 11:16:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3398 transitions. [2020-07-07 11:16:00,143 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3398 transitions. Word has length 25 [2020-07-07 11:16:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:00,144 INFO L479 AbstractCegarLoop]: Abstraction has 2568 states and 3398 transitions. [2020-07-07 11:16:00,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3398 transitions. [2020-07-07 11:16:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:16:00,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:00,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:00,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 11:16:00,148 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:00,149 INFO L82 PathProgramCache]: Analyzing trace with hash -228205767, now seen corresponding path program 1 times [2020-07-07 11:16:00,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:00,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707724477] [2020-07-07 11:16:00,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,168 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 11:16:00,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707724477] [2020-07-07 11:16:00,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:00,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:00,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55843729] [2020-07-07 11:16:00,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:00,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:00,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:00,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,171 INFO L87 Difference]: Start difference. First operand 2568 states and 3398 transitions. Second operand 3 states. [2020-07-07 11:16:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:00,235 INFO L93 Difference]: Finished difference Result 5836 states and 7688 transitions. [2020-07-07 11:16:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:00,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-07 11:16:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:00,251 INFO L225 Difference]: With dead ends: 5836 [2020-07-07 11:16:00,251 INFO L226 Difference]: Without dead ends: 3338 [2020-07-07 11:16:00,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-07-07 11:16:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2020-07-07 11:16:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-07 11:16:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4294 transitions. [2020-07-07 11:16:00,361 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4294 transitions. Word has length 25 [2020-07-07 11:16:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:00,361 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 4294 transitions. [2020-07-07 11:16:00,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4294 transitions. [2020-07-07 11:16:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:16:00,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:00,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:00,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 11:16:00,368 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2102577579, now seen corresponding path program 1 times [2020-07-07 11:16:00,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:00,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842883294] [2020-07-07 11:16:00,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,389 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 11:16:00,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842883294] [2020-07-07 11:16:00,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:00,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:00,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208317857] [2020-07-07 11:16:00,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:00,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:00,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:00,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,391 INFO L87 Difference]: Start difference. First operand 3336 states and 4294 transitions. Second operand 3 states. [2020-07-07 11:16:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:00,457 INFO L93 Difference]: Finished difference Result 5004 states and 6408 transitions. [2020-07-07 11:16:00,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:00,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-07 11:16:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:00,475 INFO L225 Difference]: With dead ends: 5004 [2020-07-07 11:16:00,475 INFO L226 Difference]: Without dead ends: 3402 [2020-07-07 11:16:00,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2020-07-07 11:16:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3400. [2020-07-07 11:16:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3400 states. [2020-07-07 11:16:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 4294 transitions. [2020-07-07 11:16:00,616 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 4294 transitions. Word has length 26 [2020-07-07 11:16:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:00,617 INFO L479 AbstractCegarLoop]: Abstraction has 3400 states and 4294 transitions. [2020-07-07 11:16:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 4294 transitions. [2020-07-07 11:16:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:16:00,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:00,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:00,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 11:16:00,622 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1515771565, now seen corresponding path program 1 times [2020-07-07 11:16:00,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:00,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843788374] [2020-07-07 11:16:00,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:00,655 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 11:16:00,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843788374] [2020-07-07 11:16:00,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:00,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:00,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992575233] [2020-07-07 11:16:00,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:00,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:00,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,657 INFO L87 Difference]: Start difference. First operand 3400 states and 4294 transitions. Second operand 3 states. [2020-07-07 11:16:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:00,773 INFO L93 Difference]: Finished difference Result 9804 states and 12104 transitions. [2020-07-07 11:16:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:00,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-07 11:16:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:00,822 INFO L225 Difference]: With dead ends: 9804 [2020-07-07 11:16:00,822 INFO L226 Difference]: Without dead ends: 6538 [2020-07-07 11:16:00,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2020-07-07 11:16:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6536. [2020-07-07 11:16:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-07-07 11:16:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7814 transitions. [2020-07-07 11:16:01,021 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7814 transitions. Word has length 26 [2020-07-07 11:16:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:01,022 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7814 transitions. [2020-07-07 11:16:01,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7814 transitions. [2020-07-07 11:16:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:16:01,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:01,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:01,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 11:16:01,032 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:01,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1257606127, now seen corresponding path program 1 times [2020-07-07 11:16:01,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:01,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114604741] [2020-07-07 11:16:01,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:01,058 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 11:16:01,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114604741] [2020-07-07 11:16:01,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:01,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:01,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449513672] [2020-07-07 11:16:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:01,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:01,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:01,062 INFO L87 Difference]: Start difference. First operand 6536 states and 7814 transitions. Second operand 3 states. [2020-07-07 11:16:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:01,232 INFO L93 Difference]: Finished difference Result 7052 states and 8584 transitions. [2020-07-07 11:16:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:01,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-07 11:16:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:01,250 INFO L225 Difference]: With dead ends: 7052 [2020-07-07 11:16:01,250 INFO L226 Difference]: Without dead ends: 7050 [2020-07-07 11:16:01,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-07-07 11:16:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 6536. [2020-07-07 11:16:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-07-07 11:16:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7686 transitions. [2020-07-07 11:16:01,426 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7686 transitions. Word has length 26 [2020-07-07 11:16:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:01,427 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7686 transitions. [2020-07-07 11:16:01,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7686 transitions. [2020-07-07 11:16:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:16:01,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:01,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:01,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-07 11:16:01,442 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -255505650, now seen corresponding path program 1 times [2020-07-07 11:16:01,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:01,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616445411] [2020-07-07 11:16:01,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:01,465 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 11:16:01,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616445411] [2020-07-07 11:16:01,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:01,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:01,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709609501] [2020-07-07 11:16:01,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:01,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:01,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:01,467 INFO L87 Difference]: Start difference. First operand 6536 states and 7686 transitions. Second operand 3 states. [2020-07-07 11:16:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:01,644 INFO L93 Difference]: Finished difference Result 10634 states and 12423 transitions. [2020-07-07 11:16:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:01,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-07 11:16:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:01,675 INFO L225 Difference]: With dead ends: 10634 [2020-07-07 11:16:01,676 INFO L226 Difference]: Without dead ends: 10632 [2020-07-07 11:16:01,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2020-07-07 11:16:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 10120. [2020-07-07 11:16:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10120 states. [2020-07-07 11:16:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 11654 transitions. [2020-07-07 11:16:02,026 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 11654 transitions. Word has length 27 [2020-07-07 11:16:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:02,027 INFO L479 AbstractCegarLoop]: Abstraction has 10120 states and 11654 transitions. [2020-07-07 11:16:02,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 11654 transitions. [2020-07-07 11:16:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:16:02,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:16:02,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:16:02,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-07 11:16:02,046 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:16:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:16:02,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2659788, now seen corresponding path program 1 times [2020-07-07 11:16:02,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:16:02,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903100717] [2020-07-07 11:16:02,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:16:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:16:02,072 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 11:16:02,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903100717] [2020-07-07 11:16:02,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:16:02,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:16:02,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792281164] [2020-07-07 11:16:02,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:16:02,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:16:02,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:16:02,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:02,075 INFO L87 Difference]: Start difference. First operand 10120 states and 11654 transitions. Second operand 3 states. [2020-07-07 11:16:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:16:02,281 INFO L93 Difference]: Finished difference Result 22664 states and 25734 transitions. [2020-07-07 11:16:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:16:02,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-07 11:16:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:16:02,282 INFO L225 Difference]: With dead ends: 22664 [2020-07-07 11:16:02,283 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:16:02,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:16:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:16:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:16:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:16:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:16:02,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-07-07 11:16:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:16:02,318 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:16:02,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:16:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:16:02,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:16:02,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-07 11:16:02,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:16:02,349 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:16:02,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:16:02,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:16:02,349 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:16:02,349 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:16:02,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-07-07 11:16:02,350 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-07-07 11:16:02,351 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-07-07 11:16:02,352 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-07-07 11:16:02,352 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-07 11:16:02,352 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,352 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,353 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,354 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-07-07 11:16:02,354 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,354 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,354 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-07 11:16:02,354 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-07-07 11:16:02,354 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-07-07 11:16:02,354 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,355 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,355 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-07 11:16:02,355 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-07-07 11:16:02,355 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,355 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-07-07 11:16:02,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:16:02 BoogieIcfgContainer [2020-07-07 11:16:02,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:16:02,374 INFO L168 Benchmark]: Toolchain (without parser) took 5802.00 ms. Allocated memory was 146.3 MB in the beginning and 332.4 MB in the end (delta: 186.1 MB). Free memory was 104.6 MB in the beginning and 101.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 189.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,376 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.11 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 93.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,377 INFO L168 Benchmark]: Boogie Preprocessor took 143.15 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.4 MB in the beginning and 180.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,380 INFO L168 Benchmark]: RCFGBuilder took 382.49 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,384 INFO L168 Benchmark]: TraceAbstraction took 5003.65 ms. Allocated memory was 202.9 MB in the beginning and 332.4 MB in the end (delta: 129.5 MB). Free memory was 161.6 MB in the beginning and 101.7 MB in the end (delta: 59.9 MB). Peak memory consumption was 189.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:16:02,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.11 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 93.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.15 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.4 MB in the beginning and 180.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.49 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.6 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5003.65 ms. Allocated memory was 202.9 MB in the beginning and 332.4 MB in the end (delta: 129.5 MB). Free memory was 161.6 MB in the beginning and 101.7 MB in the end (delta: 59.9 MB). Peak memory consumption was 189.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1937 SDtfs, 926 SDslu, 1314 SDs, 0 SdLazy, 133 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10120occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 25 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 522 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 23930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...