/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:36:47,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:36:47,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:36:47,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:36:47,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:36:47,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:36:47,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:36:47,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:36:47,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:36:47,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:36:47,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:36:47,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:36:47,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:36:47,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:36:47,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:36:47,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:36:47,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:36:47,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:36:47,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:36:47,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:36:47,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:36:47,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:36:47,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:36:47,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:36:47,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:36:47,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:36:47,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:36:47,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:36:47,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:36:47,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:36:47,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:36:47,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:36:47,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:36:47,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:36:47,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:36:47,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:36:47,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:36:47,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:36:47,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:36:47,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:36:47,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:36:47,339 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:36:47,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:36:47,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:36:47,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:36:47,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:36:47,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:36:47,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:36:47,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:36:47,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:36:47,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:36:47,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:36:47,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:36:47,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:36:47,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:36:47,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:36:47,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:36:47,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:36:47,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:36:47,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:36:47,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:36:47,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:36:47,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:36:47,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:36:47,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:36:47,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:36:47,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:36:47,868 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:36:47,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2020-12-22 09:36:47,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70b165be/9adb253673704bfa86b753da23f0de9d/FLAG010049642 [2020-12-22 09:36:48,973 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:36:48,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2020-12-22 09:36:49,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70b165be/9adb253673704bfa86b753da23f0de9d/FLAG010049642 [2020-12-22 09:36:49,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70b165be/9adb253673704bfa86b753da23f0de9d [2020-12-22 09:36:49,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:36:49,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:36:49,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:36:49,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:36:49,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:36:49,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:36:49" (1/1) ... [2020-12-22 09:36:49,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44149d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:49, skipping insertion in model container [2020-12-22 09:36:49,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:36:49" (1/1) ... [2020-12-22 09:36:49,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:36:49,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:36:49,914 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6412,6425] [2020-12-22 09:36:50,005 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13230,13243] [2020-12-22 09:36:50,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:36:51,004 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:36:51,073 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6412,6425] [2020-12-22 09:36:51,093 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13230,13243] [2020-12-22 09:36:51,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:36:51,916 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:36:51,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51 WrapperNode [2020-12-22 09:36:51,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:36:51,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:36:51,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:36:51,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:36:51,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:52,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:52,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:36:52,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:36:52,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:36:52,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:36:52,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:52,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:52,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:52,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:53,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:53,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:53,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (1/1) ... [2020-12-22 09:36:53,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:36:53,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:36:53,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:36:53,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:36:53,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (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 [2020-12-22 09:36:53,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:36:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:36:53,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:36:53,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:36:58,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:36:58,492 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-22 09:36:58,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:36:58 BoogieIcfgContainer [2020-12-22 09:36:58,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:36:58,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:36:58,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:36:58,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:36:58,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:36:49" (1/3) ... [2020-12-22 09:36:58,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a750ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:36:58, skipping insertion in model container [2020-12-22 09:36:58,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:36:51" (2/3) ... [2020-12-22 09:36:58,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a750ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:36:58, skipping insertion in model container [2020-12-22 09:36:58,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:36:58" (3/3) ... [2020-12-22 09:36:58,506 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2020-12-22 09:36:58,512 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:36:58,518 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:36:58,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:36:58,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:36:58,576 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:36:58,576 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:36:58,576 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:36:58,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:36:58,576 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:36:58,577 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:36:58,577 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:36:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states. [2020-12-22 09:36:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:36:58,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:36:58,625 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] [2020-12-22 09:36:58,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:36:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:36:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2020-12-22 09:36:58,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:36:58,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319467550] [2020-12-22 09:36:58,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:36:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:36:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:36:58,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319467550] [2020-12-22 09:36:58,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:36:58,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:36:58,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302753580] [2020-12-22 09:36:58,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:36:58,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:36:58,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:36:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:36:58,877 INFO L87 Difference]: Start difference. First operand 878 states. Second operand 2 states. [2020-12-22 09:36:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:36:58,986 INFO L93 Difference]: Finished difference Result 1734 states and 3292 transitions. [2020-12-22 09:36:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:36:58,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-12-22 09:36:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:36:59,037 INFO L225 Difference]: With dead ends: 1734 [2020-12-22 09:36:59,037 INFO L226 Difference]: Without dead ends: 812 [2020-12-22 09:36:59,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:36:59,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-12-22 09:36:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2020-12-22 09:36:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-12-22 09:36:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2020-12-22 09:36:59,142 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2020-12-22 09:36:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:36:59,142 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2020-12-22 09:36:59,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:36:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2020-12-22 09:36:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:36:59,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:36:59,145 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] [2020-12-22 09:36:59,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:36:59,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:36:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:36:59,146 INFO L82 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2020-12-22 09:36:59,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:36:59,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900017234] [2020-12-22 09:36:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:36:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:36:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:36:59,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900017234] [2020-12-22 09:36:59,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:36:59,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:36:59,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306692358] [2020-12-22 09:36:59,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:36:59,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:36:59,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:36:59,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:36:59,296 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand 5 states. [2020-12-22 09:36:59,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:36:59,428 INFO L93 Difference]: Finished difference Result 888 states and 1649 transitions. [2020-12-22 09:36:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:36:59,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 09:36:59,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:36:59,434 INFO L225 Difference]: With dead ends: 888 [2020-12-22 09:36:59,434 INFO L226 Difference]: Without dead ends: 848 [2020-12-22 09:36:59,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:36:59,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-12-22 09:36:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2020-12-22 09:36:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-12-22 09:36:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2020-12-22 09:36:59,465 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2020-12-22 09:36:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:36:59,465 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2020-12-22 09:36:59,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:36:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2020-12-22 09:36:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:36:59,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:36:59,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:36:59,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:36:59,468 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:36:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:36:59,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2020-12-22 09:36:59,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:36:59,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63489168] [2020-12-22 09:36:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:36:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:36:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:36:59,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63489168] [2020-12-22 09:36:59,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:36:59,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:36:59,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781320738] [2020-12-22 09:36:59,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:36:59,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:36:59,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:36:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:36:59,562 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand 3 states. [2020-12-22 09:36:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:36:59,660 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2020-12-22 09:36:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:36:59,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:36:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:36:59,666 INFO L225 Difference]: With dead ends: 878 [2020-12-22 09:36:59,667 INFO L226 Difference]: Without dead ends: 842 [2020-12-22 09:36:59,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:36:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-12-22 09:36:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2020-12-22 09:36:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840 states. [2020-12-22 09:36:59,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2020-12-22 09:36:59,714 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2020-12-22 09:36:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:36:59,715 INFO L481 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2020-12-22 09:36:59,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:36:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2020-12-22 09:36:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:36:59,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:36:59,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:36:59,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:36:59,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:36:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:36:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2020-12-22 09:36:59,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:36:59,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522846882] [2020-12-22 09:36:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:36:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:36:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:36:59,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522846882] [2020-12-22 09:36:59,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:36:59,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:36:59,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138487296] [2020-12-22 09:36:59,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:36:59,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:36:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:36:59,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:36:59,887 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand 5 states. [2020-12-22 09:37:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:00,056 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2020-12-22 09:37:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:37:00,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 09:37:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:00,064 INFO L225 Difference]: With dead ends: 1224 [2020-12-22 09:37:00,065 INFO L226 Difference]: Without dead ends: 1160 [2020-12-22 09:37:00,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:37:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-12-22 09:37:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2020-12-22 09:37:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-12-22 09:37:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2020-12-22 09:37:00,103 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2020-12-22 09:37:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:00,106 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2020-12-22 09:37:00,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2020-12-22 09:37:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:37:00,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:00,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:00,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:37:00,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:00,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2020-12-22 09:37:00,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:00,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966112669] [2020-12-22 09:37:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:00,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966112669] [2020-12-22 09:37:00,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:00,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:00,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469053084] [2020-12-22 09:37:00,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:00,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,219 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand 3 states. [2020-12-22 09:37:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:00,262 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2020-12-22 09:37:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:00,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:37:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:00,270 INFO L225 Difference]: With dead ends: 1089 [2020-12-22 09:37:00,270 INFO L226 Difference]: Without dead ends: 963 [2020-12-22 09:37:00,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-22 09:37:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2020-12-22 09:37:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-12-22 09:37:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2020-12-22 09:37:00,303 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2020-12-22 09:37:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:00,303 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2020-12-22 09:37:00,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2020-12-22 09:37:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:37:00,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:00,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:00,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:37:00,306 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:00,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2020-12-22 09:37:00,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:00,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830241065] [2020-12-22 09:37:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:00,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830241065] [2020-12-22 09:37:00,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:00,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:00,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950002064] [2020-12-22 09:37:00,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:37:00,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:37:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:00,444 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand 5 states. [2020-12-22 09:37:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:00,554 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2020-12-22 09:37:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:37:00,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 09:37:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:00,561 INFO L225 Difference]: With dead ends: 1146 [2020-12-22 09:37:00,561 INFO L226 Difference]: Without dead ends: 963 [2020-12-22 09:37:00,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:37:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-22 09:37:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2020-12-22 09:37:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-12-22 09:37:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2020-12-22 09:37:00,593 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2020-12-22 09:37:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:00,594 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2020-12-22 09:37:00,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2020-12-22 09:37:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:37:00,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:00,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:00,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:37:00,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2020-12-22 09:37:00,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:00,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540451471] [2020-12-22 09:37:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:00,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540451471] [2020-12-22 09:37:00,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:00,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:00,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106796980] [2020-12-22 09:37:00,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:00,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,647 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand 3 states. [2020-12-22 09:37:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:00,698 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2020-12-22 09:37:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:00,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:37:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:00,706 INFO L225 Difference]: With dead ends: 1291 [2020-12-22 09:37:00,706 INFO L226 Difference]: Without dead ends: 1108 [2020-12-22 09:37:00,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-12-22 09:37:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2020-12-22 09:37:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-12-22 09:37:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2020-12-22 09:37:00,748 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2020-12-22 09:37:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:00,749 INFO L481 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2020-12-22 09:37:00,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2020-12-22 09:37:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:37:00,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:00,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:00,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:37:00,750 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:00,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2020-12-22 09:37:00,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:00,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227019799] [2020-12-22 09:37:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:00,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227019799] [2020-12-22 09:37:00,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:00,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:00,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034372519] [2020-12-22 09:37:00,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:00,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:00,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:00,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,799 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand 3 states. [2020-12-22 09:37:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:00,859 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2020-12-22 09:37:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:00,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:37:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:00,868 INFO L225 Difference]: With dead ends: 1690 [2020-12-22 09:37:00,868 INFO L226 Difference]: Without dead ends: 1362 [2020-12-22 09:37:00,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-12-22 09:37:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2020-12-22 09:37:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-12-22 09:37:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2020-12-22 09:37:00,926 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2020-12-22 09:37:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:00,927 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2020-12-22 09:37:00,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2020-12-22 09:37:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 09:37:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:00,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:00,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:37:00,928 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2020-12-22 09:37:00,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:00,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243320624] [2020-12-22 09:37:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:01,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243320624] [2020-12-22 09:37:01,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:01,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:01,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828008595] [2020-12-22 09:37:01,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:37:01,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:01,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:37:01,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:01,013 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand 5 states. [2020-12-22 09:37:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:01,155 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2020-12-22 09:37:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:37:01,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-22 09:37:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:01,167 INFO L225 Difference]: With dead ends: 1883 [2020-12-22 09:37:01,167 INFO L226 Difference]: Without dead ends: 1881 [2020-12-22 09:37:01,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:37:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-12-22 09:37:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2020-12-22 09:37:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-12-22 09:37:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2020-12-22 09:37:01,253 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2020-12-22 09:37:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:01,253 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2020-12-22 09:37:01,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2020-12-22 09:37:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 09:37:01,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:01,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-12-22 09:37:01,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:37:01,256 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash 254202953, now seen corresponding path program 1 times [2020-12-22 09:37:01,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:01,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146252442] [2020-12-22 09:37:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:01,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146252442] [2020-12-22 09:37:01,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:01,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:01,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747861768] [2020-12-22 09:37:01,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:37:01,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:37:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:37:01,422 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand 4 states. [2020-12-22 09:37:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:12,139 INFO L93 Difference]: Finished difference Result 3663 states and 6661 transitions. [2020-12-22 09:37:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:37:12,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 09:37:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:12,156 INFO L225 Difference]: With dead ends: 3663 [2020-12-22 09:37:12,156 INFO L226 Difference]: Without dead ends: 2910 [2020-12-22 09:37:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-12-22 09:37:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2020-12-22 09:37:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-12-22 09:37:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4328 transitions. [2020-12-22 09:37:12,252 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4328 transitions. Word has length 61 [2020-12-22 09:37:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:12,253 INFO L481 AbstractCegarLoop]: Abstraction has 2910 states and 4328 transitions. [2020-12-22 09:37:12,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:37:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4328 transitions. [2020-12-22 09:37:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:37:12,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:12,255 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:37:12,255 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2020-12-22 09:37:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:12,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292087261] [2020-12-22 09:37:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 09:37:12,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292087261] [2020-12-22 09:37:12,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:12,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:12,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916821560] [2020-12-22 09:37:12,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:37:12,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:37:12,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:12,332 INFO L87 Difference]: Start difference. First operand 2910 states and 4328 transitions. Second operand 5 states. [2020-12-22 09:37:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:12,559 INFO L93 Difference]: Finished difference Result 4938 states and 7176 transitions. [2020-12-22 09:37:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:37:12,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 09:37:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:12,582 INFO L225 Difference]: With dead ends: 4938 [2020-12-22 09:37:12,583 INFO L226 Difference]: Without dead ends: 4308 [2020-12-22 09:37:12,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:37:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2020-12-22 09:37:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2020-12-22 09:37:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2020-12-22 09:37:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5204 transitions. [2020-12-22 09:37:12,748 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5204 transitions. Word has length 64 [2020-12-22 09:37:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:12,748 INFO L481 AbstractCegarLoop]: Abstraction has 3538 states and 5204 transitions. [2020-12-22 09:37:12,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5204 transitions. [2020-12-22 09:37:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:37:12,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:12,750 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:12,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:37:12,751 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2020-12-22 09:37:12,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:12,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453226125] [2020-12-22 09:37:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 09:37:12,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453226125] [2020-12-22 09:37:12,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:12,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:12,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324282240] [2020-12-22 09:37:12,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:37:12,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:37:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:12,824 INFO L87 Difference]: Start difference. First operand 3538 states and 5204 transitions. Second operand 5 states. [2020-12-22 09:37:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:13,098 INFO L93 Difference]: Finished difference Result 5566 states and 8052 transitions. [2020-12-22 09:37:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:37:13,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 09:37:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:13,126 INFO L225 Difference]: With dead ends: 5566 [2020-12-22 09:37:13,126 INFO L226 Difference]: Without dead ends: 4936 [2020-12-22 09:37:13,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:37:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2020-12-22 09:37:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2020-12-22 09:37:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2020-12-22 09:37:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6508 transitions. [2020-12-22 09:37:13,369 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6508 transitions. Word has length 64 [2020-12-22 09:37:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:13,369 INFO L481 AbstractCegarLoop]: Abstraction has 4482 states and 6508 transitions. [2020-12-22 09:37:13,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6508 transitions. [2020-12-22 09:37:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:37:13,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:13,371 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:13,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:37:13,372 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2020-12-22 09:37:13,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:13,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086312333] [2020-12-22 09:37:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:37:13,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086312333] [2020-12-22 09:37:13,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:13,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:13,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516706358] [2020-12-22 09:37:13,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:37:13,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:37:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:37:13,441 INFO L87 Difference]: Start difference. First operand 4482 states and 6508 transitions. Second operand 5 states. [2020-12-22 09:37:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:13,725 INFO L93 Difference]: Finished difference Result 5834 states and 8432 transitions. [2020-12-22 09:37:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:37:13,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 09:37:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:13,753 INFO L225 Difference]: With dead ends: 5834 [2020-12-22 09:37:13,753 INFO L226 Difference]: Without dead ends: 5384 [2020-12-22 09:37:13,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:37:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2020-12-22 09:37:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4930. [2020-12-22 09:37:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4930 states. [2020-12-22 09:37:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7140 transitions. [2020-12-22 09:37:14,121 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7140 transitions. Word has length 64 [2020-12-22 09:37:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:14,121 INFO L481 AbstractCegarLoop]: Abstraction has 4930 states and 7140 transitions. [2020-12-22 09:37:14,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:37:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7140 transitions. [2020-12-22 09:37:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:37:14,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:14,130 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:14,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:37:14,130 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:14,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2020-12-22 09:37:14,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:14,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277160749] [2020-12-22 09:37:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:14,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277160749] [2020-12-22 09:37:14,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:14,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:14,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291067676] [2020-12-22 09:37:14,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:14,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:14,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:14,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:14,213 INFO L87 Difference]: Start difference. First operand 4930 states and 7140 transitions. Second operand 3 states. [2020-12-22 09:37:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:14,464 INFO L93 Difference]: Finished difference Result 7582 states and 10842 transitions. [2020-12-22 09:37:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:14,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 09:37:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:14,492 INFO L225 Difference]: With dead ends: 7582 [2020-12-22 09:37:14,492 INFO L226 Difference]: Without dead ends: 4932 [2020-12-22 09:37:14,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2020-12-22 09:37:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4930. [2020-12-22 09:37:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4930 states. [2020-12-22 09:37:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7090 transitions. [2020-12-22 09:37:14,798 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7090 transitions. Word has length 65 [2020-12-22 09:37:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:14,799 INFO L481 AbstractCegarLoop]: Abstraction has 4930 states and 7090 transitions. [2020-12-22 09:37:14,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7090 transitions. [2020-12-22 09:37:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:37:14,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:14,801 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:37:14,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:37:14,801 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2020-12-22 09:37:14,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:14,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606801015] [2020-12-22 09:37:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606801015] [2020-12-22 09:37:14,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:14,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:14,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025311022] [2020-12-22 09:37:14,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:14,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:14,867 INFO L87 Difference]: Start difference. First operand 4930 states and 7090 transitions. Second operand 3 states. [2020-12-22 09:37:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:15,020 INFO L93 Difference]: Finished difference Result 6258 states and 8917 transitions. [2020-12-22 09:37:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:15,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 09:37:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:15,030 INFO L225 Difference]: With dead ends: 6258 [2020-12-22 09:37:15,030 INFO L226 Difference]: Without dead ends: 3608 [2020-12-22 09:37:15,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2020-12-22 09:37:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3606. [2020-12-22 09:37:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3606 states. [2020-12-22 09:37:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5240 transitions. [2020-12-22 09:37:15,196 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5240 transitions. Word has length 65 [2020-12-22 09:37:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:15,196 INFO L481 AbstractCegarLoop]: Abstraction has 3606 states and 5240 transitions. [2020-12-22 09:37:15,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5240 transitions. [2020-12-22 09:37:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:37:15,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:15,198 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:15,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:37:15,198 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2020-12-22 09:37:15,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:15,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599558174] [2020-12-22 09:37:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:37:15,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599558174] [2020-12-22 09:37:15,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60485617] [2020-12-22 09:37:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:15,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 09:37:15,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:37:15,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:37:15,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 10 [2020-12-22 09:37:15,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139908805] [2020-12-22 09:37:15,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:37:15,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:37:15,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:37:15,796 INFO L87 Difference]: Start difference. First operand 3606 states and 5240 transitions. Second operand 10 states. [2020-12-22 09:37:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:16,152 INFO L93 Difference]: Finished difference Result 5455 states and 7777 transitions. [2020-12-22 09:37:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:37:16,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-12-22 09:37:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:16,162 INFO L225 Difference]: With dead ends: 5455 [2020-12-22 09:37:16,163 INFO L226 Difference]: Without dead ends: 4445 [2020-12-22 09:37:16,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:37:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2020-12-22 09:37:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 4412. [2020-12-22 09:37:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4412 states. [2020-12-22 09:37:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 6296 transitions. [2020-12-22 09:37:16,390 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 6296 transitions. Word has length 65 [2020-12-22 09:37:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:16,390 INFO L481 AbstractCegarLoop]: Abstraction has 4412 states and 6296 transitions. [2020-12-22 09:37:16,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:37:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 6296 transitions. [2020-12-22 09:37:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:16,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:16,392 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:16,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 09:37:16,607 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash 752221610, now seen corresponding path program 1 times [2020-12-22 09:37:16,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:16,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40249337] [2020-12-22 09:37:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:16,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40249337] [2020-12-22 09:37:16,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296330585] [2020-12-22 09:37:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:16,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 09:37:16,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:17,169 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:37:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:17,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:37:17,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:37:17,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296419295] [2020-12-22 09:37:17,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:37:17,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:17,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:37:17,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:37:17,523 INFO L87 Difference]: Start difference. First operand 4412 states and 6296 transitions. Second operand 17 states. [2020-12-22 09:37:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:19,477 INFO L93 Difference]: Finished difference Result 11431 states and 15566 transitions. [2020-12-22 09:37:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 09:37:19,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-12-22 09:37:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:19,501 INFO L225 Difference]: With dead ends: 11431 [2020-12-22 09:37:19,501 INFO L226 Difference]: Without dead ends: 9940 [2020-12-22 09:37:19,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 09:37:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2020-12-22 09:37:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 6887. [2020-12-22 09:37:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6887 states. [2020-12-22 09:37:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9574 transitions. [2020-12-22 09:37:19,997 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9574 transitions. Word has length 66 [2020-12-22 09:37:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:19,998 INFO L481 AbstractCegarLoop]: Abstraction has 6887 states and 9574 transitions. [2020-12-22 09:37:19,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:37:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9574 transitions. [2020-12-22 09:37:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:19,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:19,999 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:20,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 09:37:20,215 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1910012548, now seen corresponding path program 1 times [2020-12-22 09:37:20,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:20,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854776341] [2020-12-22 09:37:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854776341] [2020-12-22 09:37:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124839613] [2020-12-22 09:37:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:20,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:37:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:20,676 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:37:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:20,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:37:20,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:37:20,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754201872] [2020-12-22 09:37:20,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:37:20,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:37:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:37:20,965 INFO L87 Difference]: Start difference. First operand 6887 states and 9574 transitions. Second operand 17 states. [2020-12-22 09:37:21,511 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-12-22 09:37:23,686 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 09:37:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:25,452 INFO L93 Difference]: Finished difference Result 30001 states and 40146 transitions. [2020-12-22 09:37:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:37:25,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-12-22 09:37:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:25,512 INFO L225 Difference]: With dead ends: 30001 [2020-12-22 09:37:25,513 INFO L226 Difference]: Without dead ends: 25394 [2020-12-22 09:37:25,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:37:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25394 states. [2020-12-22 09:37:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25394 to 12386. [2020-12-22 09:37:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12386 states. [2020-12-22 09:37:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12386 states to 12386 states and 16701 transitions. [2020-12-22 09:37:26,752 INFO L78 Accepts]: Start accepts. Automaton has 12386 states and 16701 transitions. Word has length 66 [2020-12-22 09:37:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:26,753 INFO L481 AbstractCegarLoop]: Abstraction has 12386 states and 16701 transitions. [2020-12-22 09:37:26,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:37:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12386 states and 16701 transitions. [2020-12-22 09:37:26,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:26,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:26,755 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:26,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 09:37:26,970 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:26,972 INFO L82 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2020-12-22 09:37:26,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:26,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945917892] [2020-12-22 09:37:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:27,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945917892] [2020-12-22 09:37:27,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216005883] [2020-12-22 09:37:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:27,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 09:37:27,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:27,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:37:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:27,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:37:27,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:37:27,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822646432] [2020-12-22 09:37:27,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:37:27,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:37:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:37:27,855 INFO L87 Difference]: Start difference. First operand 12386 states and 16701 transitions. Second operand 17 states. [2020-12-22 09:37:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:32,434 INFO L93 Difference]: Finished difference Result 55180 states and 72037 transitions. [2020-12-22 09:37:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 09:37:32,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2020-12-22 09:37:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:32,527 INFO L225 Difference]: With dead ends: 55180 [2020-12-22 09:37:32,528 INFO L226 Difference]: Without dead ends: 45074 [2020-12-22 09:37:32,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=312, Invalid=948, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 09:37:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45074 states. [2020-12-22 09:37:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45074 to 29822. [2020-12-22 09:37:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29822 states. [2020-12-22 09:37:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29822 states to 29822 states and 39129 transitions. [2020-12-22 09:37:35,732 INFO L78 Accepts]: Start accepts. Automaton has 29822 states and 39129 transitions. Word has length 66 [2020-12-22 09:37:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:35,732 INFO L481 AbstractCegarLoop]: Abstraction has 29822 states and 39129 transitions. [2020-12-22 09:37:35,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:37:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 29822 states and 39129 transitions. [2020-12-22 09:37:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:35,735 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:35,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:35,949 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:35,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:35,950 INFO L82 PathProgramCache]: Analyzing trace with hash -434236462, now seen corresponding path program 1 times [2020-12-22 09:37:35,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:35,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939224571] [2020-12-22 09:37:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:36,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939224571] [2020-12-22 09:37:36,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:36,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:37:36,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831832136] [2020-12-22 09:37:36,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:37:36,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:36,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:37:36,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:36,003 INFO L87 Difference]: Start difference. First operand 29822 states and 39129 transitions. Second operand 3 states. [2020-12-22 09:37:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:37,104 INFO L93 Difference]: Finished difference Result 41818 states and 54659 transitions. [2020-12-22 09:37:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:37:37,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:37:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:37,132 INFO L225 Difference]: With dead ends: 41818 [2020-12-22 09:37:37,133 INFO L226 Difference]: Without dead ends: 14276 [2020-12-22 09:37:37,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:37:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14276 states. [2020-12-22 09:37:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 13224. [2020-12-22 09:37:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13224 states. [2020-12-22 09:37:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13224 states to 13224 states and 17418 transitions. [2020-12-22 09:37:38,339 INFO L78 Accepts]: Start accepts. Automaton has 13224 states and 17418 transitions. Word has length 66 [2020-12-22 09:37:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:38,339 INFO L481 AbstractCegarLoop]: Abstraction has 13224 states and 17418 transitions. [2020-12-22 09:37:38,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:37:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 13224 states and 17418 transitions. [2020-12-22 09:37:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:38,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:38,347 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:38,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:37:38,347 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1433407838, now seen corresponding path program 1 times [2020-12-22 09:37:38,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:38,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538596580] [2020-12-22 09:37:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:37:38,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538596580] [2020-12-22 09:37:38,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:38,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:38,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737747885] [2020-12-22 09:37:38,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:37:38,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:38,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:37:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:37:38,417 INFO L87 Difference]: Start difference. First operand 13224 states and 17418 transitions. Second operand 6 states. [2020-12-22 09:37:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:39,772 INFO L93 Difference]: Finished difference Result 22289 states and 29065 transitions. [2020-12-22 09:37:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:37:39,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 09:37:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:39,789 INFO L225 Difference]: With dead ends: 22289 [2020-12-22 09:37:39,789 INFO L226 Difference]: Without dead ends: 11422 [2020-12-22 09:37:39,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:37:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2020-12-22 09:37:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 11422. [2020-12-22 09:37:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11422 states. [2020-12-22 09:37:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 14896 transitions. [2020-12-22 09:37:40,866 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 14896 transitions. Word has length 66 [2020-12-22 09:37:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:40,867 INFO L481 AbstractCegarLoop]: Abstraction has 11422 states and 14896 transitions. [2020-12-22 09:37:40,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:37:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 14896 transitions. [2020-12-22 09:37:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:40,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:40,869 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:40,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:37:40,869 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1275703454, now seen corresponding path program 1 times [2020-12-22 09:37:40,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:40,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31488925] [2020-12-22 09:37:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 09:37:40,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31488925] [2020-12-22 09:37:40,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:40,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:40,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712272891] [2020-12-22 09:37:40,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:37:40,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:37:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:37:40,934 INFO L87 Difference]: Start difference. First operand 11422 states and 14896 transitions. Second operand 6 states. [2020-12-22 09:37:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:41,911 INFO L93 Difference]: Finished difference Result 18199 states and 23432 transitions. [2020-12-22 09:37:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:37:41,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 09:37:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:41,924 INFO L225 Difference]: With dead ends: 18199 [2020-12-22 09:37:41,925 INFO L226 Difference]: Without dead ends: 9170 [2020-12-22 09:37:41,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:37:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2020-12-22 09:37:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 9170. [2020-12-22 09:37:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9170 states. [2020-12-22 09:37:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11928 transitions. [2020-12-22 09:37:42,673 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11928 transitions. Word has length 66 [2020-12-22 09:37:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:42,673 INFO L481 AbstractCegarLoop]: Abstraction has 9170 states and 11928 transitions. [2020-12-22 09:37:42,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:37:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11928 transitions. [2020-12-22 09:37:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:37:42,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:42,675 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:42,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:37:42,676 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2020-12-22 09:37:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:42,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592702215] [2020-12-22 09:37:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:37:42,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592702215] [2020-12-22 09:37:42,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:37:42,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:37:42,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175143181] [2020-12-22 09:37:42,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:37:42,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:42,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:37:42,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:37:42,825 INFO L87 Difference]: Start difference. First operand 9170 states and 11928 transitions. Second operand 6 states. [2020-12-22 09:37:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:43,487 INFO L93 Difference]: Finished difference Result 14520 states and 18585 transitions. [2020-12-22 09:37:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:37:43,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 09:37:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:43,497 INFO L225 Difference]: With dead ends: 14520 [2020-12-22 09:37:43,497 INFO L226 Difference]: Without dead ends: 7666 [2020-12-22 09:37:43,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:37:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2020-12-22 09:37:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 7666. [2020-12-22 09:37:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7666 states. [2020-12-22 09:37:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 10022 transitions. [2020-12-22 09:37:44,079 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 10022 transitions. Word has length 66 [2020-12-22 09:37:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:44,079 INFO L481 AbstractCegarLoop]: Abstraction has 7666 states and 10022 transitions. [2020-12-22 09:37:44,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:37:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 10022 transitions. [2020-12-22 09:37:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:37:44,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:44,080 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:44,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 09:37:44,081 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:44,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash -791645332, now seen corresponding path program 1 times [2020-12-22 09:37:44,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:44,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998202897] [2020-12-22 09:37:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:44,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998202897] [2020-12-22 09:37:44,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620199894] [2020-12-22 09:37:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:44,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 09:37:44,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:45,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:37:45,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:37:45,479 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:37:45,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:37:45,731 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 28 [2020-12-22 09:37:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:45,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:37:45,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2020-12-22 09:37:45,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208710284] [2020-12-22 09:37:45,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 09:37:45,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:37:45,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 09:37:45,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2020-12-22 09:37:45,961 INFO L87 Difference]: Start difference. First operand 7666 states and 10022 transitions. Second operand 26 states. [2020-12-22 09:37:46,817 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-12-22 09:37:47,019 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 09:37:47,324 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 09:37:47,579 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 09:37:47,826 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 09:37:48,106 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 09:37:48,383 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 09:37:48,679 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-22 09:37:48,975 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-22 09:37:49,202 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-12-22 09:37:49,371 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 09:37:49,569 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 09:37:50,085 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-22 09:37:50,507 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 09:37:50,703 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-12-22 09:37:51,040 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-12-22 09:37:51,348 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-22 09:37:51,666 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-12-22 09:37:51,828 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 09:37:52,013 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 09:37:52,305 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 09:37:53,003 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-12-22 09:37:53,406 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-22 09:37:53,730 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 09:37:53,966 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-12-22 09:37:54,268 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 09:37:54,488 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-12-22 09:37:54,704 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-12-22 09:37:54,967 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 09:37:55,138 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 09:37:55,555 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 09:37:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:37:57,840 INFO L93 Difference]: Finished difference Result 13972 states and 17857 transitions. [2020-12-22 09:37:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-12-22 09:37:57,841 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 67 [2020-12-22 09:37:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:37:57,853 INFO L225 Difference]: With dead ends: 13972 [2020-12-22 09:37:57,859 INFO L226 Difference]: Without dead ends: 11157 [2020-12-22 09:37:57,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1298, Invalid=6358, Unknown=0, NotChecked=0, Total=7656 [2020-12-22 09:37:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11157 states. [2020-12-22 09:37:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11157 to 6908. [2020-12-22 09:37:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6908 states. [2020-12-22 09:37:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6908 states to 6908 states and 9137 transitions. [2020-12-22 09:37:58,519 INFO L78 Accepts]: Start accepts. Automaton has 6908 states and 9137 transitions. Word has length 67 [2020-12-22 09:37:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:37:58,519 INFO L481 AbstractCegarLoop]: Abstraction has 6908 states and 9137 transitions. [2020-12-22 09:37:58,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 09:37:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6908 states and 9137 transitions. [2020-12-22 09:37:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:37:58,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:37:58,521 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:37:58,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 09:37:58,735 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:37:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:37:58,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1641009586, now seen corresponding path program 1 times [2020-12-22 09:37:58,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:37:58,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817746710] [2020-12-22 09:37:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:37:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:37:59,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817746710] [2020-12-22 09:37:59,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399517232] [2020-12-22 09:37:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:37:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:37:59,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 09:37:59,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:37:59,584 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:38:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:00,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:00,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2020-12-22 09:38:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496401235] [2020-12-22 09:38:00,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 09:38:00,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 09:38:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-12-22 09:38:00,128 INFO L87 Difference]: Start difference. First operand 6908 states and 9137 transitions. Second operand 22 states. [2020-12-22 09:38:00,452 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 21 [2020-12-22 09:38:00,613 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-12-22 09:38:00,788 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-12-22 09:38:01,683 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-12-22 09:38:01,933 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 09:38:02,095 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-12-22 09:38:02,336 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 09:38:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:03,127 INFO L93 Difference]: Finished difference Result 10150 states and 13230 transitions. [2020-12-22 09:38:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 09:38:03,128 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 67 [2020-12-22 09:38:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:03,136 INFO L225 Difference]: With dead ends: 10150 [2020-12-22 09:38:03,136 INFO L226 Difference]: Without dead ends: 7964 [2020-12-22 09:38:03,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 09:38:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2020-12-22 09:38:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 5916. [2020-12-22 09:38:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5916 states. [2020-12-22 09:38:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5916 states to 5916 states and 7911 transitions. [2020-12-22 09:38:03,656 INFO L78 Accepts]: Start accepts. Automaton has 5916 states and 7911 transitions. Word has length 67 [2020-12-22 09:38:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:03,656 INFO L481 AbstractCegarLoop]: Abstraction has 5916 states and 7911 transitions. [2020-12-22 09:38:03,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 09:38:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5916 states and 7911 transitions. [2020-12-22 09:38:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:38:03,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:03,657 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-12-22 09:38:03,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:38:03,873 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2141886399, now seen corresponding path program 1 times [2020-12-22 09:38:03,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:03,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538438457] [2020-12-22 09:38:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:04,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538438457] [2020-12-22 09:38:04,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384093272] [2020-12-22 09:38:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:38:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:04,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 09:38:04,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:06,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:06,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2020-12-22 09:38:06,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923816007] [2020-12-22 09:38:06,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 09:38:06,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 09:38:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2020-12-22 09:38:06,323 INFO L87 Difference]: Start difference. First operand 5916 states and 7911 transitions. Second operand 32 states. [2020-12-22 09:38:07,406 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 09:38:07,554 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-22 09:38:08,904 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-22 09:38:09,229 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 09:38:10,973 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 09:38:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:11,698 INFO L93 Difference]: Finished difference Result 9310 states and 12212 transitions. [2020-12-22 09:38:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-22 09:38:11,700 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 68 [2020-12-22 09:38:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:11,766 INFO L225 Difference]: With dead ends: 9310 [2020-12-22 09:38:11,766 INFO L226 Difference]: Without dead ends: 7390 [2020-12-22 09:38:11,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1070, Invalid=4042, Unknown=0, NotChecked=0, Total=5112 [2020-12-22 09:38:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2020-12-22 09:38:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 4966. [2020-12-22 09:38:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4966 states. [2020-12-22 09:38:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6747 transitions. [2020-12-22 09:38:12,132 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6747 transitions. Word has length 68 [2020-12-22 09:38:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:12,133 INFO L481 AbstractCegarLoop]: Abstraction has 4966 states and 6747 transitions. [2020-12-22 09:38:12,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 09:38:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6747 transitions. [2020-12-22 09:38:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 09:38:12,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:12,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:12,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 09:38:12,346 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:12,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1538014726, now seen corresponding path program 1 times [2020-12-22 09:38:12,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:12,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708741562] [2020-12-22 09:38:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:12,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708741562] [2020-12-22 09:38:12,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754846284] [2020-12-22 09:38:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:38:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:12,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 09:38:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:13,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 09:38:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 42 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:13,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:13,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2020-12-22 09:38:13,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358314728] [2020-12-22 09:38:13,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 09:38:13,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:13,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 09:38:13,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-12-22 09:38:13,846 INFO L87 Difference]: Start difference. First operand 4966 states and 6747 transitions. Second operand 23 states. [2020-12-22 09:38:14,210 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 09:38:14,856 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-12-22 09:38:15,246 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-22 09:38:15,635 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-12-22 09:38:16,013 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-12-22 09:38:16,515 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-12-22 09:38:17,039 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-12-22 09:38:17,756 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-12-22 09:38:18,376 WARN L197 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-12-22 09:38:19,179 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-12-22 09:38:19,799 WARN L197 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-12-22 09:38:20,353 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2020-12-22 09:38:20,950 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-12-22 09:38:21,500 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-12-22 09:38:22,239 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2020-12-22 09:38:23,131 WARN L197 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-12-22 09:38:23,983 WARN L197 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-12-22 09:38:24,956 WARN L197 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-12-22 09:38:26,168 WARN L197 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 99 [2020-12-22 09:38:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:26,774 INFO L93 Difference]: Finished difference Result 7340 states and 9734 transitions. [2020-12-22 09:38:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 09:38:26,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 110 [2020-12-22 09:38:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:26,781 INFO L225 Difference]: With dead ends: 7340 [2020-12-22 09:38:26,781 INFO L226 Difference]: Without dead ends: 5184 [2020-12-22 09:38:26,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=471, Invalid=1599, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 09:38:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2020-12-22 09:38:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4966. [2020-12-22 09:38:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4966 states. [2020-12-22 09:38:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6695 transitions. [2020-12-22 09:38:27,244 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6695 transitions. Word has length 110 [2020-12-22 09:38:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:27,244 INFO L481 AbstractCegarLoop]: Abstraction has 4966 states and 6695 transitions. [2020-12-22 09:38:27,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 09:38:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6695 transitions. [2020-12-22 09:38:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 09:38:27,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:27,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:27,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 09:38:27,447 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -721276639, now seen corresponding path program 1 times [2020-12-22 09:38:27,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:27,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411623651] [2020-12-22 09:38:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411623651] [2020-12-22 09:38:27,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880184051] [2020-12-22 09:38:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:38:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:27,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 09:38:27,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:29,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 09:38:29,372 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 34 [2020-12-22 09:38:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 27 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:30,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:30,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 29 [2020-12-22 09:38:30,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10300061] [2020-12-22 09:38:30,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-22 09:38:30,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:30,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-22 09:38:30,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2020-12-22 09:38:30,163 INFO L87 Difference]: Start difference. First operand 4966 states and 6695 transitions. Second operand 30 states. [2020-12-22 09:38:30,318 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-22 09:38:30,950 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-22 09:38:31,427 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 09:38:31,649 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 09:38:31,952 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 09:38:32,156 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 09:38:32,404 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 09:38:32,719 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-12-22 09:38:33,045 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-22 09:38:33,265 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 09:38:33,466 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-22 09:38:33,824 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-12-22 09:38:34,345 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-22 09:38:34,791 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-22 09:38:35,106 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-12-22 09:38:35,541 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-22 09:38:35,896 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-22 09:38:36,039 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2020-12-22 09:38:36,237 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 09:38:36,432 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 09:38:36,729 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 09:38:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:38:37,247 INFO L93 Difference]: Finished difference Result 7058 states and 9286 transitions. [2020-12-22 09:38:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 09:38:37,248 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 111 [2020-12-22 09:38:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:38:37,254 INFO L225 Difference]: With dead ends: 7058 [2020-12-22 09:38:37,254 INFO L226 Difference]: Without dead ends: 5540 [2020-12-22 09:38:37,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=614, Invalid=2926, Unknown=0, NotChecked=0, Total=3540 [2020-12-22 09:38:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2020-12-22 09:38:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 4966. [2020-12-22 09:38:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4966 states. [2020-12-22 09:38:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6669 transitions. [2020-12-22 09:38:37,800 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6669 transitions. Word has length 111 [2020-12-22 09:38:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:38:37,800 INFO L481 AbstractCegarLoop]: Abstraction has 4966 states and 6669 transitions. [2020-12-22 09:38:37,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-22 09:38:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6669 transitions. [2020-12-22 09:38:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 09:38:37,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:38:37,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:38:38,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 09:38:38,003 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:38:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:38:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1699429479, now seen corresponding path program 1 times [2020-12-22 09:38:38,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:38:38,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346877580] [2020-12-22 09:38:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:38:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:39,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346877580] [2020-12-22 09:38:39,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391481404] [2020-12-22 09:38:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:38:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:38:39,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 09:38:39,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:38:40,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:38:40,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:38:41,067 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2020-12-22 09:38:41,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:38:41,313 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-22 09:38:41,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:38:41,725 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 09:38:41,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:38:41,761 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:38:50,817 WARN L197 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 346 DAG size of output: 45 [2020-12-22 09:38:52,216 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 09:38:53,837 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 09:38:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:38:53,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:38:53,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 39 [2020-12-22 09:38:53,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675939054] [2020-12-22 09:38:53,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 09:38:53,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:38:53,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 09:38:53,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 09:38:53,994 INFO L87 Difference]: Start difference. First operand 4966 states and 6669 transitions. Second operand 39 states. [2020-12-22 09:38:54,330 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 09:38:55,728 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-22 09:38:56,079 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-22 09:38:56,435 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-22 09:38:56,709 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:38:57,003 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:38:57,394 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 09:38:58,233 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-12-22 09:38:58,826 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-12-22 09:38:59,332 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-12-22 09:39:00,215 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-12-22 09:39:04,786 WARN L197 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-12-22 09:39:05,116 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-12-22 09:39:08,775 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 09:39:11,998 WARN L197 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2020-12-22 09:39:14,584 WARN L197 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 09:39:18,660 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-12-22 09:39:22,148 WARN L197 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-12-22 09:39:24,744 WARN L197 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-22 09:39:27,760 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 09:39:30,590 WARN L197 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-22 09:39:30,790 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 09:39:33,612 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 09:39:33,814 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 09:39:34,402 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 09:39:36,562 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-22 09:39:39,413 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-22 09:39:39,775 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 09:39:41,553 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-22 09:39:45,144 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 75 [2020-12-22 09:39:47,025 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-22 09:39:48,757 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-22 09:39:51,676 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-22 09:39:53,969 WARN L197 SmtUtils]: Spent 952.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 09:39:54,286 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 09:39:56,608 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-22 09:39:59,634 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-22 09:40:02,321 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 09:40:07,733 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 09:40:14,650 WARN L197 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 77 [2020-12-22 09:40:15,034 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-22 09:40:37,295 WARN L197 SmtUtils]: Spent 11.61 s on a formula simplification that was a NOOP. DAG size: 89 [2020-12-22 09:40:41,447 WARN L197 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 73 [2020-12-22 09:40:45,381 WARN L197 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 69 [2020-12-22 09:40:50,077 WARN L197 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-12-22 09:40:53,793 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 66