/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:53:49,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:53:49,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:53:49,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:53:49,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:53:49,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:53:49,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:53:49,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:53:49,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:53:49,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:53:49,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:53:49,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:53:49,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:53:49,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:53:49,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:53:49,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:53:49,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:53:49,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:53:49,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:53:49,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:53:49,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:53:49,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:53:49,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:53:49,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:53:49,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:53:49,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:53:49,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:53:49,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:53:49,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:53:49,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:53:49,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:53:49,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:53:49,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:53:49,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:53:49,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:53:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:53:49,295 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:53:49,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:53:49,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:53:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:53:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:53:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:53:49,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:53:49,297 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:53:49,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:53:49,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:53:49,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:53:49,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:53:49,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:53:49,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-10-24 00:53:49,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c70d781a/2b78aed910d24bb6a79081eadc7c86cf/FLAG82d3a895c [2020-10-24 00:53:50,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:53:50,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-10-24 00:53:50,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c70d781a/2b78aed910d24bb6a79081eadc7c86cf/FLAG82d3a895c [2020-10-24 00:53:50,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c70d781a/2b78aed910d24bb6a79081eadc7c86cf [2020-10-24 00:53:50,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:53:50,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:53:50,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:53:50,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:53:50,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:53:50,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:50" (1/1) ... [2020-10-24 00:53:50,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3e1218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:50, skipping insertion in model container [2020-10-24 00:53:50,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:50" (1/1) ... [2020-10-24 00:53:50,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:53:50,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:53:51,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:53:51,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:53:51,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:53:51,134 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:53:51,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51 WrapperNode [2020-10-24 00:53:51,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:53:51,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:53:51,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:53:51,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:53:51,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (1/1) ... [2020-10-24 00:53:51,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:53:51,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:53:51,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:53:51,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:53:51,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (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 [2020-10-24 00:53:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:53:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:53:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:53:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-10-24 00:53:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:53:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 00:53:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:53:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:53:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:53:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:53:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:53:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:53:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:53:51,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:53:51,536 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:53:51,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:51 BoogieIcfgContainer [2020-10-24 00:53:51,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:53:51,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:53:51,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:53:51,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:53:51,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:53:50" (1/3) ... [2020-10-24 00:53:51,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200dd7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:51, skipping insertion in model container [2020-10-24 00:53:51,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:51" (2/3) ... [2020-10-24 00:53:51,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200dd7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:51, skipping insertion in model container [2020-10-24 00:53:51,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:51" (3/3) ... [2020-10-24 00:53:51,574 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-10-24 00:53:51,611 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:53:51,628 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:53:51,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:53:51,709 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:53:51,709 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:53:51,709 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:53:51,709 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:53:51,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:53:51,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:53:51,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:53:51,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:53:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-24 00:53:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 00:53:51,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:51,740 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] [2020-10-24 00:53:51,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash -32329728, now seen corresponding path program 1 times [2020-10-24 00:53:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708139031] [2020-10-24 00:53:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:53:52,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708139031] [2020-10-24 00:53:52,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:53:52,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:53:52,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398903216] [2020-10-24 00:53:52,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:53:52,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:53:52,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:53:52,135 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-24 00:53:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:52,569 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-10-24 00:53:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 00:53:52,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-24 00:53:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:52,583 INFO L225 Difference]: With dead ends: 57 [2020-10-24 00:53:52,583 INFO L226 Difference]: Without dead ends: 37 [2020-10-24 00:53:52,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:53:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-24 00:53:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-24 00:53:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-24 00:53:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-24 00:53:52,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2020-10-24 00:53:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:52,669 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-24 00:53:52,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:53:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-24 00:53:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 00:53:52,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:52,672 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] [2020-10-24 00:53:52,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:53:52,672 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash 950139466, now seen corresponding path program 1 times [2020-10-24 00:53:52,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:52,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454008473] [2020-10-24 00:53:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:53:52,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454008473] [2020-10-24 00:53:52,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:53:52,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:53:52,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052165385] [2020-10-24 00:53:52,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:53:52,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:53:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:53:52,876 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-24 00:53:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:53,121 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-24 00:53:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 00:53:53,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-24 00:53:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:53,124 INFO L225 Difference]: With dead ends: 46 [2020-10-24 00:53:53,125 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 00:53:53,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:53:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 00:53:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-24 00:53:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-24 00:53:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-24 00:53:53,140 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 26 [2020-10-24 00:53:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:53,141 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-24 00:53:53,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:53:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-24 00:53:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 00:53:53,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:53,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2020-10-24 00:53:53,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:53:53,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:53,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1810718643, now seen corresponding path program 1 times [2020-10-24 00:53:53,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:53,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008306403] [2020-10-24 00:53:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-24 00:53:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 00:53:53,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008306403] [2020-10-24 00:53:53,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:53,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 00:53:53,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278195369] [2020-10-24 00:53:53,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 00:53:53,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:53,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 00:53:53,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 00:53:53,377 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-10-24 00:53:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:53,679 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-24 00:53:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:53:53,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-24 00:53:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:53,682 INFO L225 Difference]: With dead ends: 62 [2020-10-24 00:53:53,682 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 00:53:53,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 00:53:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 00:53:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-24 00:53:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 00:53:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-24 00:53:53,699 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 42 [2020-10-24 00:53:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:53,700 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-24 00:53:53,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 00:53:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-24 00:53:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-24 00:53:53,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:53,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:53,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:53:53,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:53,704 INFO L82 PathProgramCache]: Analyzing trace with hash 195045207, now seen corresponding path program 1 times [2020-10-24 00:53:53,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:53,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146106682] [2020-10-24 00:53:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-24 00:53:53,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146106682] [2020-10-24 00:53:53,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:53,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 00:53:53,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138304870] [2020-10-24 00:53:53,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 00:53:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 00:53:53,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 00:53:53,887 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-24 00:53:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:54,258 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-24 00:53:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 00:53:54,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-24 00:53:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:54,262 INFO L225 Difference]: With dead ends: 66 [2020-10-24 00:53:54,262 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 00:53:54,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 00:53:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 00:53:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-24 00:53:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 00:53:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-24 00:53:54,282 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 43 [2020-10-24 00:53:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:54,283 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-24 00:53:54,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 00:53:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-24 00:53:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-24 00:53:54,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:54,286 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:54,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 00:53:54,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:54,287 INFO L82 PathProgramCache]: Analyzing trace with hash -396245802, now seen corresponding path program 2 times [2020-10-24 00:53:54,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:54,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517082408] [2020-10-24 00:53:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-24 00:53:54,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517082408] [2020-10-24 00:53:54,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:54,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:53:54,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016493528] [2020-10-24 00:53:54,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:53:54,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:54,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:53:54,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:53:54,461 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 8 states. [2020-10-24 00:53:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:54,901 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2020-10-24 00:53:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 00:53:54,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-24 00:53:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:54,904 INFO L225 Difference]: With dead ends: 118 [2020-10-24 00:53:54,905 INFO L226 Difference]: Without dead ends: 73 [2020-10-24 00:53:54,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-24 00:53:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-24 00:53:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2020-10-24 00:53:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-24 00:53:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-10-24 00:53:54,928 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 60 [2020-10-24 00:53:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:54,928 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-10-24 00:53:54,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:53:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-10-24 00:53:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-24 00:53:54,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:54,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:54,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 00:53:54,932 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:54,933 INFO L82 PathProgramCache]: Analyzing trace with hash -13012784, now seen corresponding path program 3 times [2020-10-24 00:53:54,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:54,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322132661] [2020-10-24 00:53:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-24 00:53:55,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322132661] [2020-10-24 00:53:55,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:55,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:53:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104874377] [2020-10-24 00:53:55,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:53:55,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:53:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:53:55,143 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 8 states. [2020-10-24 00:53:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:55,726 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2020-10-24 00:53:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 00:53:55,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-24 00:53:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:55,736 INFO L225 Difference]: With dead ends: 96 [2020-10-24 00:53:55,737 INFO L226 Difference]: Without dead ends: 89 [2020-10-24 00:53:55,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-24 00:53:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-24 00:53:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-10-24 00:53:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-24 00:53:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2020-10-24 00:53:55,767 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 61 [2020-10-24 00:53:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:55,767 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2020-10-24 00:53:55,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:53:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2020-10-24 00:53:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-24 00:53:55,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:55,772 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:55,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 00:53:55,772 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:55,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:55,773 INFO L82 PathProgramCache]: Analyzing trace with hash 159854214, now seen corresponding path program 4 times [2020-10-24 00:53:55,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:55,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914602686] [2020-10-24 00:53:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 36 proven. 197 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-24 00:53:56,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914602686] [2020-10-24 00:53:56,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:56,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 00:53:56,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087475047] [2020-10-24 00:53:56,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 00:53:56,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:56,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 00:53:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-24 00:53:56,216 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand 9 states. [2020-10-24 00:53:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:56,986 INFO L93 Difference]: Finished difference Result 146 states and 199 transitions. [2020-10-24 00:53:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 00:53:56,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-10-24 00:53:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:57,001 INFO L225 Difference]: With dead ends: 146 [2020-10-24 00:53:57,004 INFO L226 Difference]: Without dead ends: 139 [2020-10-24 00:53:57,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:53:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-24 00:53:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2020-10-24 00:53:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-24 00:53:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 177 transitions. [2020-10-24 00:53:57,086 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 177 transitions. Word has length 132 [2020-10-24 00:53:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:57,087 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 177 transitions. [2020-10-24 00:53:57,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 00:53:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 177 transitions. [2020-10-24 00:53:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-24 00:53:57,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:57,107 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:57,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 00:53:57,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:57,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1497778840, now seen corresponding path program 5 times [2020-10-24 00:53:57,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:57,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826430835] [2020-10-24 00:53:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 78 proven. 452 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2020-10-24 00:53:57,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826430835] [2020-10-24 00:53:57,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:57,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:53:57,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146239088] [2020-10-24 00:53:57,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:53:57,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:57,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:53:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:53:57,764 INFO L87 Difference]: Start difference. First operand 127 states and 177 transitions. Second operand 10 states. [2020-10-24 00:53:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:53:58,613 INFO L93 Difference]: Finished difference Result 240 states and 348 transitions. [2020-10-24 00:53:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 00:53:58,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 202 [2020-10-24 00:53:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:53:58,619 INFO L225 Difference]: With dead ends: 240 [2020-10-24 00:53:58,619 INFO L226 Difference]: Without dead ends: 233 [2020-10-24 00:53:58,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:53:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-24 00:53:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 215. [2020-10-24 00:53:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-24 00:53:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2020-10-24 00:53:58,697 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 202 [2020-10-24 00:53:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:53:58,699 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2020-10-24 00:53:58,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:53:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2020-10-24 00:53:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-24 00:53:58,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:53:58,713 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:53:58,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 00:53:58,713 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:53:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:53:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2132540428, now seen corresponding path program 6 times [2020-10-24 00:53:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:53:58,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837417947] [2020-10-24 00:53:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:53:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:53:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:53:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:53:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:53:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:53:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:53:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:53:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:53:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:53:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 536 proven. 797 refuted. 0 times theorem prover too weak. 1232 trivial. 0 not checked. [2020-10-24 00:53:59,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837417947] [2020-10-24 00:53:59,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:53:59,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 00:53:59,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448321309] [2020-10-24 00:53:59,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 00:53:59,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:53:59,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 00:53:59,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:53:59,641 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand 16 states. [2020-10-24 00:54:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:02,182 INFO L93 Difference]: Finished difference Result 334 states and 574 transitions. [2020-10-24 00:54:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-24 00:54:02,183 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 272 [2020-10-24 00:54:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:02,189 INFO L225 Difference]: With dead ends: 334 [2020-10-24 00:54:02,189 INFO L226 Difference]: Without dead ends: 132 [2020-10-24 00:54:02,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=393, Invalid=1499, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 00:54:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-24 00:54:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 118. [2020-10-24 00:54:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-24 00:54:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 150 transitions. [2020-10-24 00:54:02,237 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 150 transitions. Word has length 272 [2020-10-24 00:54:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:02,237 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 150 transitions. [2020-10-24 00:54:02,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 00:54:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 150 transitions. [2020-10-24 00:54:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-24 00:54:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:02,247 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 13, 13, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:02,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 00:54:02,247 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1553933834, now seen corresponding path program 7 times [2020-10-24 00:54:02,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:02,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228789086] [2020-10-24 00:54:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:02,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5244 backedges. 0 proven. 1944 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2020-10-24 00:54:04,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228789086] [2020-10-24 00:54:04,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:04,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-24 00:54:04,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321010515] [2020-10-24 00:54:04,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-24 00:54:04,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:04,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-24 00:54:04,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-24 00:54:04,395 INFO L87 Difference]: Start difference. First operand 118 states and 150 transitions. Second operand 23 states. [2020-10-24 00:54:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:07,538 INFO L93 Difference]: Finished difference Result 159 states and 212 transitions. [2020-10-24 00:54:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-24 00:54:07,539 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 378 [2020-10-24 00:54:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:07,543 INFO L225 Difference]: With dead ends: 159 [2020-10-24 00:54:07,543 INFO L226 Difference]: Without dead ends: 152 [2020-10-24 00:54:07,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=196, Invalid=2254, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 00:54:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-24 00:54:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 134. [2020-10-24 00:54:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-24 00:54:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-10-24 00:54:07,575 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 378 [2020-10-24 00:54:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:07,576 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-10-24 00:54:07,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-24 00:54:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-10-24 00:54:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2020-10-24 00:54:07,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:07,589 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 46, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 18, 18, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:07,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 00:54:07,589 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1694816162, now seen corresponding path program 8 times [2020-10-24 00:54:07,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:07,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648390266] [2020-10-24 00:54:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-24 00:54:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 1332 proven. 2175 refuted. 0 times theorem prover too weak. 6766 trivial. 0 not checked. [2020-10-24 00:54:09,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648390266] [2020-10-24 00:54:09,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:09,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 00:54:09,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923697669] [2020-10-24 00:54:09,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 00:54:09,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:09,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 00:54:09,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-24 00:54:09,093 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 17 states. [2020-10-24 00:54:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:11,850 INFO L93 Difference]: Finished difference Result 278 states and 444 transitions. [2020-10-24 00:54:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-24 00:54:11,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 519 [2020-10-24 00:54:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:11,855 INFO L225 Difference]: With dead ends: 278 [2020-10-24 00:54:11,856 INFO L226 Difference]: Without dead ends: 166 [2020-10-24 00:54:11,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2020-10-24 00:54:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-24 00:54:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 150. [2020-10-24 00:54:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-24 00:54:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2020-10-24 00:54:11,906 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 519 [2020-10-24 00:54:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:11,910 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2020-10-24 00:54:11,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 00:54:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2020-10-24 00:54:11,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-24 00:54:11,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:11,920 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 16, 16, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:11,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 00:54:11,921 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:11,922 INFO L82 PathProgramCache]: Analyzing trace with hash 520351719, now seen corresponding path program 9 times [2020-10-24 00:54:11,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:11,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013807854] [2020-10-24 00:54:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2020-10-24 00:54:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8185 backedges. 1117 proven. 1869 refuted. 0 times theorem prover too weak. 5199 trivial. 0 not checked. [2020-10-24 00:54:13,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013807854] [2020-10-24 00:54:13,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:13,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 00:54:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71040659] [2020-10-24 00:54:13,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 00:54:13,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:13,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 00:54:13,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:54:13,406 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand 16 states. [2020-10-24 00:54:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:15,323 INFO L93 Difference]: Finished difference Result 284 states and 403 transitions. [2020-10-24 00:54:15,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-24 00:54:15,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 466 [2020-10-24 00:54:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:15,329 INFO L225 Difference]: With dead ends: 284 [2020-10-24 00:54:15,329 INFO L226 Difference]: Without dead ends: 160 [2020-10-24 00:54:15,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 00:54:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-24 00:54:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 135. [2020-10-24 00:54:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-24 00:54:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2020-10-24 00:54:15,358 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 466 [2020-10-24 00:54:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:15,359 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2020-10-24 00:54:15,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 00:54:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2020-10-24 00:54:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-24 00:54:15,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:54:15,375 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 21, 21, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:54:15,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 00:54:15,376 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:54:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:54:15,376 INFO L82 PathProgramCache]: Analyzing trace with hash -240553225, now seen corresponding path program 10 times [2020-10-24 00:54:15,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:54:15,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917373] [2020-10-24 00:54:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:54:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:54:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:54:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-24 00:54:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-24 00:54:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-24 00:54:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-24 00:54:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:54:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 00:54:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-24 00:54:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:16,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-24 00:54:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:54:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14259 backedges. 702 proven. 2341 refuted. 0 times theorem prover too weak. 11216 trivial. 0 not checked. [2020-10-24 00:54:17,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917373] [2020-10-24 00:54:17,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:54:17,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 00:54:17,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675224653] [2020-10-24 00:54:17,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 00:54:17,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:54:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 00:54:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-24 00:54:17,153 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand 13 states. [2020-10-24 00:54:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:54:18,603 INFO L93 Difference]: Finished difference Result 244 states and 341 transitions. [2020-10-24 00:54:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 00:54:18,606 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 607 [2020-10-24 00:54:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:54:18,608 INFO L225 Difference]: With dead ends: 244 [2020-10-24 00:54:18,608 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 00:54:18,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2020-10-24 00:54:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 00:54:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 00:54:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 00:54:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 00:54:18,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 607 [2020-10-24 00:54:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:54:18,612 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 00:54:18,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 00:54:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 00:54:18,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 00:54:18,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 00:54:18,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 00:54:23,947 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 130 DAG size of output: 61 [2020-10-24 00:54:24,213 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 3 [2020-10-24 00:54:24,334 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 6 [2020-10-24 00:54:24,954 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 42 [2020-10-24 00:54:25,093 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 6 [2020-10-24 00:54:26,361 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2020-10-24 00:54:27,639 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 148 DAG size of output: 71 [2020-10-24 00:54:28,680 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 130 DAG size of output: 61 [2020-10-24 00:54:29,493 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2020-10-24 00:54:29,648 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 6 [2020-10-24 00:54:30,498 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2020-10-24 00:54:31,116 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 42 [2020-10-24 00:54:31,227 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 9 [2020-10-24 00:54:31,232 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,233 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 00:54:31,234 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 25 32) the Hoare annotation is: true [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: false [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L28(lines 28 30) the Hoare annotation is: (and (<= 7 main_~x~0) (< 12 main_~result~0) (<= main_~result~0 13)) [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: false [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= 7 main_~x~0) (<= main_~x~0 7)) [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 13 |main_#t~ret9|) (<= 7 main_~x~0) (<= |main_#t~ret9| 13)) [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 30) the Hoare annotation is: (<= 7 main_~x~0) [2020-10-24 00:54:31,235 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (and (<= 13 |main_#t~ret9|) (<= 7 main_~x~0) (<= |main_#t~ret9| 13)) [2020-10-24 00:54:31,236 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 25 32) the Hoare annotation is: (<= 7 main_~x~0) [2020-10-24 00:54:31,236 INFO L270 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (and (<= 13 |main_#t~ret9|) (<= 7 main_~x~0) (< 12 main_~result~0) (<= main_~result~0 13) (<= |main_#t~ret9| 13)) [2020-10-24 00:54:31,236 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 25 32) the Hoare annotation is: (<= 7 main_~x~0) [2020-10-24 00:54:31,236 INFO L270 CegarLoopResult]: At program point fiboEXIT(lines 7 15) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo_#res|)) (.cse1 (<= |fibo_#res| 1))) (and (or (and .cse0 .cse1) (<= |fibo_#in~n| 0) (not (<= |fibo_#in~n| 1))) (or (and (<= 0 |fibo_#res|) (<= |fibo_#res| 0)) (< 0 fibo_~n)) (let ((.cse2 (= fibo_~n |fibo_#in~n|))) (or (and (<= fibo_~n 6) .cse2) (and (<= 13 |fibo_#res|) (<= |fibo_#res| 13) .cse2) (and .cse2 (<= 8 |fibo_#in~n|)))) (or (and (<= 2 |fibo_#res|) (<= |fibo_#res| 2) (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= |fibo_#res| 8) (<= 8 |fibo_#res|) (<= 6 |fibo_#in~n|)) (and (<= 5 |fibo_#res|) (<= 5 |fibo_#in~n|) (<= |fibo_#in~n| 5) (<= |fibo_#res| 5)) (not (<= 2 |fibo_#in~n|)) (and (<= |fibo_#in~n| 4) (<= |fibo_#res| 3) (<= 3 |fibo_#res|) (<= 4 |fibo_#in~n|)) (and .cse0 .cse1 (<= |fibo_#in~n| 2)) (<= 7 |fibo_#in~n|)))) [2020-10-24 00:54:31,237 INFO L270 CegarLoopResult]: At program point fiboFINAL(lines 7 15) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo_#res|)) (.cse1 (<= |fibo_#res| 1))) (and (or (and .cse0 .cse1) (<= |fibo_#in~n| 0) (not (<= |fibo_#in~n| 1))) (or (and (<= 0 |fibo_#res|) (<= |fibo_#res| 0)) (< 0 fibo_~n)) (let ((.cse2 (= fibo_~n |fibo_#in~n|))) (or (and (<= fibo_~n 6) .cse2) (and (<= 13 |fibo_#res|) (<= |fibo_#res| 13) .cse2) (and .cse2 (<= 8 |fibo_#in~n|)))) (or (and (<= 2 |fibo_#res|) (<= |fibo_#res| 2) (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= |fibo_#res| 8) (<= 8 |fibo_#res|) (<= 6 |fibo_#in~n|)) (and (<= 5 |fibo_#res|) (<= 5 |fibo_#in~n|) (<= |fibo_#in~n| 5) (<= |fibo_#res| 5)) (not (<= 2 |fibo_#in~n|)) (and (<= |fibo_#in~n| 4) (<= |fibo_#res| 3) (<= 3 |fibo_#res|) (<= 4 |fibo_#in~n|)) (and .cse0 .cse1 (<= |fibo_#in~n| 2)) (<= 7 |fibo_#in~n|)))) [2020-10-24 00:54:31,237 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (<= 2 |fibo_#in~n|) (= fibo_~n |fibo_#in~n|)) [2020-10-24 00:54:31,237 INFO L270 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (let ((.cse1 (<= |fibo_#t~ret7| 1)) (.cse2 (<= 1 |fibo_#t~ret7|)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= |fibo_#in~n| 6) .cse0 (<= 6 |fibo_#in~n|)) (and .cse1 (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse0) (and .cse1 .cse2 (<= 3 |fibo_#in~n|) .cse0 (<= |fibo_#in~n| 3)) (and .cse0 (<= 8 |fibo_#in~n|)) (and (<= |fibo_#t~ret7| 2) (<= |fibo_#in~n| 4) .cse0 (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (and (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret7| 3) .cse0 (<= |fibo_#in~n| 5) (<= 3 |fibo_#t~ret7|)) (and (<= |fibo_#t~ret7| 8) (<= 8 |fibo_#t~ret7|) (<= 7 fibo_~n) .cse0))) [2020-10-24 00:54:31,237 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (< 0 fibo_~n) (not (<= 2 |fibo_#in~n|)) (= fibo_~n |fibo_#in~n|)) [2020-10-24 00:54:31,238 INFO L270 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse1 (<= |fibo_#t~ret7| 1)) (.cse2 (<= 1 |fibo_#t~ret7|)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= |fibo_#in~n| 6) .cse0 (<= 6 |fibo_#in~n|)) (and .cse1 (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse0) (and .cse1 .cse2 (<= 3 |fibo_#in~n|) .cse0 (<= |fibo_#in~n| 3)) (and .cse0 (<= 8 |fibo_#in~n|)) (and (<= |fibo_#t~ret7| 2) (<= |fibo_#in~n| 4) .cse0 (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (and (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret7| 3) .cse0 (<= |fibo_#in~n| 5) (<= 3 |fibo_#t~ret7|)) (and (<= |fibo_#t~ret7| 8) (<= 8 |fibo_#t~ret7|) (<= 7 fibo_~n) .cse0))) [2020-10-24 00:54:31,238 INFO L270 CegarLoopResult]: At program point L10(lines 10 14) the Hoare annotation is: (and (< 0 fibo_~n) (= fibo_~n |fibo_#in~n|)) [2020-10-24 00:54:31,238 INFO L270 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (let ((.cse0 (<= |fibo_#t~ret7| 1)) (.cse1 (+ |fibo_#t~ret8| |fibo_#t~ret7|)) (.cse2 (<= 1 |fibo_#t~ret7|)) (.cse3 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= 1 .cse1) (<= .cse1 1) (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse3) (and (<= |fibo_#t~ret7| 8) (<= 8 |fibo_#t~ret7|) (<= .cse1 13) (<= 13 .cse1) (<= 7 |fibo_#in~n|) .cse3) (and .cse3 (<= 8 |fibo_#in~n|)) (and (<= |fibo_#t~ret7| 2) (<= |fibo_#in~n| 4) (<= 3 .cse1) (<= .cse1 3) .cse3 (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (and (<= 8 .cse1) (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= |fibo_#in~n| 6) .cse3 (<= .cse1 8) (<= 6 |fibo_#in~n|)) (and (<= 5 .cse1) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret7| 3) .cse3 (<= |fibo_#in~n| 5) (<= 3 |fibo_#t~ret7|) (<= .cse1 5)) (and (<= .cse1 2) .cse0 (<= 2 .cse1) .cse2 (<= 3 |fibo_#in~n|) .cse3 (<= |fibo_#in~n| 3)))) [2020-10-24 00:54:31,238 INFO L270 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= |fibo_#in~n| 0) (= fibo_~n |fibo_#in~n|)) [2020-10-24 00:54:31,239 INFO L270 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (let ((.cse0 (<= |fibo_#t~ret7| 1)) (.cse1 (+ |fibo_#t~ret8| |fibo_#t~ret7|)) (.cse2 (<= 1 |fibo_#t~ret7|)) (.cse3 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= 1 .cse1) (<= .cse1 1) (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#in~n| 2) .cse3) (and (<= |fibo_#t~ret7| 8) (<= 8 |fibo_#t~ret7|) (<= .cse1 13) (<= 13 .cse1) (<= 7 |fibo_#in~n|) .cse3) (and .cse3 (<= 8 |fibo_#in~n|)) (and (<= |fibo_#t~ret7| 2) (<= |fibo_#in~n| 4) (<= 3 .cse1) (<= .cse1 3) .cse3 (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (and (<= 8 .cse1) (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= |fibo_#in~n| 6) .cse3 (<= .cse1 8) (<= 6 |fibo_#in~n|)) (and (<= 5 .cse1) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret7| 3) .cse3 (<= |fibo_#in~n| 5) (<= 3 |fibo_#t~ret7|) (<= .cse1 5)) (and (<= .cse1 2) .cse0 (<= 2 .cse1) .cse2 (<= 3 |fibo_#in~n|) .cse3 (<= |fibo_#in~n| 3)))) [2020-10-24 00:54:31,239 INFO L270 CegarLoopResult]: At program point L8(lines 8 14) the Hoare annotation is: (= fibo_~n |fibo_#in~n|) [2020-10-24 00:54:31,239 INFO L270 CegarLoopResult]: At program point L13-5(line 13) the Hoare annotation is: (and (let ((.cse1 (<= |fibo_#t~ret7| 1)) (.cse2 (<= 1 |fibo_#t~ret7|)) (.cse0 (+ |fibo_#t~ret8| |fibo_#t~ret7|))) (or (and (<= .cse0 2) .cse1 (<= 2 |fibo_#res|) (<= 2 .cse0) .cse2 (<= |fibo_#res| 2) (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= 8 .cse0) (<= |fibo_#res| 8) (<= 5 |fibo_#t~ret7|) (<= |fibo_#t~ret7| 5) (<= 8 |fibo_#res|) (<= |fibo_#in~n| 6) (<= .cse0 8) (<= 6 |fibo_#in~n|)) (and (<= 5 |fibo_#res|) (<= 5 .cse0) (<= 5 |fibo_#in~n|) (<= |fibo_#t~ret7| 3) (<= |fibo_#in~n| 5) (<= 3 |fibo_#t~ret7|) (<= .cse0 5) (<= |fibo_#res| 5)) (and (<= |fibo_#t~ret7| 8) (<= 13 |fibo_#res|) (<= 8 |fibo_#t~ret7|) (<= .cse0 13) (<= 13 .cse0) (<= 7 |fibo_#in~n|) (<= |fibo_#res| 13)) (and (<= 1 |fibo_#res|) .cse1 (<= 1 .cse0) (<= .cse0 1) (<= 2 |fibo_#in~n|) .cse2 (<= |fibo_#res| 1) (<= |fibo_#in~n| 2)) (and (<= |fibo_#t~ret7| 2) (<= |fibo_#in~n| 4) (<= 3 .cse0) (<= |fibo_#res| 3) (<= .cse0 3) (<= 3 |fibo_#res|) (<= 2 |fibo_#t~ret7|) (<= 4 |fibo_#in~n|)) (<= 8 |fibo_#in~n|))) (= fibo_~n |fibo_#in~n|)) [2020-10-24 00:54:31,239 INFO L270 CegarLoopResult]: At program point L13-6(line 13) the Hoare annotation is: (let ((.cse3 (<= |fibo_#in~n| 2)) (.cse4 (= fibo_~n |fibo_#in~n|))) (let ((.cse1 (and (<= 1 |fibo_#res|) (<= 2 |fibo_#in~n|) (<= |fibo_#res| 1) .cse3 .cse4)) (.cse2 (<= 4 |fibo_#in~n|)) (.cse0 (<= |fibo_#in~n| 4))) (and (or (and (<= |fibo_#res| 8) (<= 8 |fibo_#res|) (<= 6 |fibo_#in~n|)) .cse0 (and (<= 5 |fibo_#res|) (<= |fibo_#in~n| 5) (<= |fibo_#res| 5)) (<= 7 |fibo_#in~n|)) (or .cse1 (and (<= 2 |fibo_#res|) (<= |fibo_#res| 2)) .cse2) (or (not .cse3) .cse1) (or (and (<= fibo_~n 6) .cse4) (and (<= 13 |fibo_#res|) (<= |fibo_#res| 13) .cse4) (and .cse4 (<= 8 |fibo_#in~n|))) (or (not .cse2) (not .cse0) (and (<= |fibo_#res| 3) (<= 3 |fibo_#res|)))))) [2020-10-24 00:54:31,240 INFO L277 CegarLoopResult]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2020-10-24 00:54:31,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:54:31 BoogieIcfgContainer [2020-10-24 00:54:31,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:54:31,263 INFO L168 Benchmark]: Toolchain (without parser) took 40456.35 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 128.0 MB in the beginning and 284.6 MB in the end (delta: -156.7 MB). Peak memory consumption was 407.9 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:31,264 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:54:31,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 118.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:31,265 INFO L168 Benchmark]: Boogie Preprocessor took 41.33 ms. Allocated memory is still 151.0 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:31,266 INFO L168 Benchmark]: RCFGBuilder took 360.46 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 103.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:31,267 INFO L168 Benchmark]: TraceAbstraction took 39721.43 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 103.2 MB in the beginning and 284.6 MB in the end (delta: -181.5 MB). Peak memory consumption was 383.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:54:31,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 118.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.33 ms. Allocated memory is still 151.0 MB. Free memory was 118.4 MB in the beginning and 117.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 360.46 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 103.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39721.43 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 103.2 MB in the beginning and 284.6 MB in the end (delta: -181.5 MB). Peak memory consumption was 383.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 7 <= x - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo: (((((1 <= \result && \result <= 1) || \old(n) <= 0) || !(\old(n) <= 1)) && ((0 <= \result && \result <= 0) || 0 < n)) && (((n <= 6 && n == \old(n)) || ((13 <= \result && \result <= 13) && n == \old(n))) || (n == \old(n) && 8 <= \old(n)))) && (((((((((2 <= \result && \result <= 2) && 3 <= \old(n)) && \old(n) <= 3) || ((\result <= 8 && 8 <= \result) && 6 <= \old(n))) || (((5 <= \result && 5 <= \old(n)) && \old(n) <= 5) && \result <= 5)) || !(2 <= \old(n))) || (((\old(n) <= 4 && \result <= 3) && 3 <= \result) && 4 <= \old(n))) || ((1 <= \result && \result <= 1) && \old(n) <= 2)) || 7 <= \old(n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.9s, OverallIterations: 13, TraceHistogramMax: 67, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 12.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 603 SDtfs, 1149 SDslu, 1235 SDs, 0 SdLazy, 4450 SolverSat, 755 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 985 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 123 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 1575 PreInvPairs, 2834 NumberOfFragments, 1207 HoareAnnotationTreeSize, 1575 FomulaSimplifications, 73414 FormulaSimplificationTreeSizeReduction, 4.2s HoareSimplificationTime, 43 FomulaSimplificationsInter, 40003 FormulaSimplificationTreeSizeReductionInter, 8.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 2833 NumberOfCodeBlocks, 2833 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2820 ConstructedInterpolants, 0 QuantifiedInterpolants, 2140056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 32638/42458 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...