/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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:49:07,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:49:07,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:49:07,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:49:07,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:49:07,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:49:07,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:49:07,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:49:07,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:49:07,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:49:07,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:49:07,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:49:07,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:49:07,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:49:07,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:49:07,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:49:07,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:49:07,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:49:07,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:49:07,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:49:07,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:49:07,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:49:07,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:49:07,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:49:07,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:49:07,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:49:07,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:49:07,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:49:07,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:49:07,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:49:07,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:49:07,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:49:07,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:49:07,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:49:07,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:49:07,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:49:07,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:49:07,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:49:07,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:49:07,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:49:07,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:49:07,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:49:07,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:49:07,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:49:07,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:49:07,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:49:07,262 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:49:07,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:49:07,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:49:07,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:49:07,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:49:07,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:49:07,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:49:07,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:49:07,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:49:07,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:49:07,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:49:07,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:49:07,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:49:07,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:49:07,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:49:07,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:49:07,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:49:07,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:49:07,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:49:07,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:49:07,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:49:07,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:49:07,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:49:07,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:49:07,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:49:07,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:49:07,716 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:49:07,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:49:07,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4648e76/79e2dbfda8154370a900d726e998d696/FLAG4c1bde614 [2020-12-22 09:49:08,817 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:49:08,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:49:08,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4648e76/79e2dbfda8154370a900d726e998d696/FLAG4c1bde614 [2020-12-22 09:49:09,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4648e76/79e2dbfda8154370a900d726e998d696 [2020-12-22 09:49:09,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:49:09,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:49:09,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:49:09,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:49:09,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:49:09,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:49:09" (1/1) ... [2020-12-22 09:49:09,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aceee2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:09, skipping insertion in model container [2020-12-22 09:49:09,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:49:09" (1/1) ... [2020-12-22 09:49:09,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:49:09,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:49:09,985 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8858,8871] [2020-12-22 09:49:10,079 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[15905,15918] [2020-12-22 09:49:11,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:49:11,179 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:49:11,219 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8858,8871] [2020-12-22 09:49:11,235 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[15905,15918] [2020-12-22 09:49:12,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:49:12,321 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:49:12,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12 WrapperNode [2020-12-22 09:49:12,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:49:12,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:49:12,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:49:12,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:49:12,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:12,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:12,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:49:12,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:49:12,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:49:12,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:49:12,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:12,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:12,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:12,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:13,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:13,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:13,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (1/1) ... [2020-12-22 09:49:13,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:49:13,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:49:13,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:49:13,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:49:13,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (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 09:49:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:49:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:49:13,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:49:13,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:49:19,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:49:19,649 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-22 09:49:19,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:49:19 BoogieIcfgContainer [2020-12-22 09:49:19,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:49:19,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:49:19,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:49:19,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:49:19,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:49:09" (1/3) ... [2020-12-22 09:49:19,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4502ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:49:19, skipping insertion in model container [2020-12-22 09:49:19,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:12" (2/3) ... [2020-12-22 09:49:19,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4502ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:49:19, skipping insertion in model container [2020-12-22 09:49:19,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:49:19" (3/3) ... [2020-12-22 09:49:19,664 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:49:19,673 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:49:19,680 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:49:19,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:49:19,743 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:49:19,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:49:19,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:49:19,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:49:19,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:49:19,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:49:19,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:49:19,745 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:49:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states. [2020-12-22 09:49:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 09:49:19,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:19,794 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] [2020-12-22 09:49:19,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2020-12-22 09:49:19,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:19,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840786762] [2020-12-22 09:49:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:20,093 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 09:49:20,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840786762] [2020-12-22 09:49:20,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:20,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:49:20,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135031109] [2020-12-22 09:49:20,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:49:20,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:49:20,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:49:20,127 INFO L87 Difference]: Start difference. First operand 892 states. Second operand 2 states. [2020-12-22 09:49:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:20,235 INFO L93 Difference]: Finished difference Result 1753 states and 3328 transitions. [2020-12-22 09:49:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:49:20,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2020-12-22 09:49:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:20,287 INFO L225 Difference]: With dead ends: 1753 [2020-12-22 09:49:20,288 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 09:49:20,300 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 09:49:20,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 09:49:20,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2020-12-22 09:49:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-12-22 09:49:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1559 transitions. [2020-12-22 09:49:20,436 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1559 transitions. Word has length 30 [2020-12-22 09:49:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:20,436 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1559 transitions. [2020-12-22 09:49:20,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:49:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1559 transitions. [2020-12-22 09:49:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 09:49:20,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:20,440 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] [2020-12-22 09:49:20,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:49:20,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:20,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2020-12-22 09:49:20,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:20,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724291985] [2020-12-22 09:49:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:20,606 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 09:49:20,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724291985] [2020-12-22 09:49:20,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:20,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:20,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761246946] [2020-12-22 09:49:20,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:49:20,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:49:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:49:20,611 INFO L87 Difference]: Start difference. First operand 826 states and 1559 transitions. Second operand 5 states. [2020-12-22 09:49:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:20,811 INFO L93 Difference]: Finished difference Result 873 states and 1631 transitions. [2020-12-22 09:49:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:49:20,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 09:49:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:20,817 INFO L225 Difference]: With dead ends: 873 [2020-12-22 09:49:20,817 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 09:49:20,819 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 09:49:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 09:49:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2020-12-22 09:49:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-12-22 09:49:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1536 transitions. [2020-12-22 09:49:20,840 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1536 transitions. Word has length 30 [2020-12-22 09:49:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:20,840 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1536 transitions. [2020-12-22 09:49:20,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:49:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1536 transitions. [2020-12-22 09:49:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:20,843 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] [2020-12-22 09:49:20,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:49:20,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2020-12-22 09:49:20,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:20,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460472069] [2020-12-22 09:49:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:20,949 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 09:49:20,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460472069] [2020-12-22 09:49:20,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:20,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:20,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202274499] [2020-12-22 09:49:20,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:20,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:20,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:20,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:20,957 INFO L87 Difference]: Start difference. First operand 826 states and 1536 transitions. Second operand 3 states. [2020-12-22 09:49:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:21,003 INFO L93 Difference]: Finished difference Result 906 states and 1662 transitions. [2020-12-22 09:49:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:21,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:21,015 INFO L225 Difference]: With dead ends: 906 [2020-12-22 09:49:21,016 INFO L226 Difference]: Without dead ends: 863 [2020-12-22 09:49:21,018 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 09:49:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-12-22 09:49:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2020-12-22 09:49:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 09:49:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1592 transitions. [2020-12-22 09:49:21,055 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1592 transitions. Word has length 52 [2020-12-22 09:49:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:21,056 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1592 transitions. [2020-12-22 09:49:21,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1592 transitions. [2020-12-22 09:49:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:21,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:21,063 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] [2020-12-22 09:49:21,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:49:21,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:21,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2020-12-22 09:49:21,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:21,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146435086] [2020-12-22 09:49:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:21,225 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 09:49:21,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146435086] [2020-12-22 09:49:21,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:21,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:21,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845357018] [2020-12-22 09:49:21,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:21,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:21,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:21,228 INFO L87 Difference]: Start difference. First operand 861 states and 1592 transitions. Second operand 3 states. [2020-12-22 09:49:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:21,275 INFO L93 Difference]: Finished difference Result 1005 states and 1820 transitions. [2020-12-22 09:49:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:21,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:21,282 INFO L225 Difference]: With dead ends: 1005 [2020-12-22 09:49:21,282 INFO L226 Difference]: Without dead ends: 927 [2020-12-22 09:49:21,283 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 09:49:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-12-22 09:49:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 925. [2020-12-22 09:49:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-12-22 09:49:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1693 transitions. [2020-12-22 09:49:21,312 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1693 transitions. Word has length 52 [2020-12-22 09:49:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:21,313 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1693 transitions. [2020-12-22 09:49:21,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1693 transitions. [2020-12-22 09:49:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:21,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:21,315 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] [2020-12-22 09:49:21,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:49:21,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2020-12-22 09:49:21,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:21,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085789032] [2020-12-22 09:49:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:21,387 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 09:49:21,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085789032] [2020-12-22 09:49:21,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:21,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:21,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665895620] [2020-12-22 09:49:21,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:21,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:21,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:21,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:21,390 INFO L87 Difference]: Start difference. First operand 925 states and 1693 transitions. Second operand 3 states. [2020-12-22 09:49:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:21,439 INFO L93 Difference]: Finished difference Result 1185 states and 2103 transitions. [2020-12-22 09:49:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:21,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:21,447 INFO L225 Difference]: With dead ends: 1185 [2020-12-22 09:49:21,448 INFO L226 Difference]: Without dead ends: 1043 [2020-12-22 09:49:21,449 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 09:49:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-22 09:49:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1041. [2020-12-22 09:49:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-12-22 09:49:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1873 transitions. [2020-12-22 09:49:21,485 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1873 transitions. Word has length 52 [2020-12-22 09:49:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:21,486 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1873 transitions. [2020-12-22 09:49:21,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1873 transitions. [2020-12-22 09:49:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:21,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:21,488 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] [2020-12-22 09:49:21,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:49:21,488 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2020-12-22 09:49:21,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:21,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263564815] [2020-12-22 09:49:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:21,560 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 09:49:21,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263564815] [2020-12-22 09:49:21,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:21,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:21,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700018527] [2020-12-22 09:49:21,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:21,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:21,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:21,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:21,563 INFO L87 Difference]: Start difference. First operand 1041 states and 1873 transitions. Second operand 3 states. [2020-12-22 09:49:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:21,625 INFO L93 Difference]: Finished difference Result 1509 states and 2603 transitions. [2020-12-22 09:49:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:21,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:21,634 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 09:49:21,634 INFO L226 Difference]: Without dead ends: 1251 [2020-12-22 09:49:21,635 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 09:49:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-12-22 09:49:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2020-12-22 09:49:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-12-22 09:49:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2189 transitions. [2020-12-22 09:49:21,684 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2189 transitions. Word has length 52 [2020-12-22 09:49:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:21,684 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2189 transitions. [2020-12-22 09:49:21,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2189 transitions. [2020-12-22 09:49:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:21,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:21,686 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] [2020-12-22 09:49:21,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:49:21,686 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1924545907, now seen corresponding path program 1 times [2020-12-22 09:49:21,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:21,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977755628] [2020-12-22 09:49:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:21,876 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 09:49:21,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977755628] [2020-12-22 09:49:21,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:21,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:21,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547342983] [2020-12-22 09:49:21,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:21,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:21,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:21,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:21,879 INFO L87 Difference]: Start difference. First operand 1249 states and 2189 transitions. Second operand 6 states. [2020-12-22 09:49:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:22,262 INFO L93 Difference]: Finished difference Result 4977 states and 7957 transitions. [2020-12-22 09:49:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:49:22,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 09:49:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:22,290 INFO L225 Difference]: With dead ends: 4977 [2020-12-22 09:49:22,290 INFO L226 Difference]: Without dead ends: 4511 [2020-12-22 09:49:22,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:49:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-12-22 09:49:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 1713. [2020-12-22 09:49:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-12-22 09:49:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2877 transitions. [2020-12-22 09:49:22,411 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2877 transitions. Word has length 52 [2020-12-22 09:49:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:22,411 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 2877 transitions. [2020-12-22 09:49:22,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2877 transitions. [2020-12-22 09:49:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 09:49:22,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:22,412 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] [2020-12-22 09:49:22,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:49:22,413 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:22,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1236981091, now seen corresponding path program 1 times [2020-12-22 09:49:22,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:22,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263799173] [2020-12-22 09:49:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:22,513 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 09:49:22,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263799173] [2020-12-22 09:49:22,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:22,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831172845] [2020-12-22 09:49:22,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:22,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:22,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:22,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:22,517 INFO L87 Difference]: Start difference. First operand 1713 states and 2877 transitions. Second operand 3 states. [2020-12-22 09:49:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:22,643 INFO L93 Difference]: Finished difference Result 3071 states and 4929 transitions. [2020-12-22 09:49:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:22,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 09:49:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:22,658 INFO L225 Difference]: With dead ends: 3071 [2020-12-22 09:49:22,659 INFO L226 Difference]: Without dead ends: 2141 [2020-12-22 09:49:22,664 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 09:49:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-12-22 09:49:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2139. [2020-12-22 09:49:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3495 transitions. [2020-12-22 09:49:22,778 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3495 transitions. Word has length 54 [2020-12-22 09:49:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:22,782 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3495 transitions. [2020-12-22 09:49:22,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3495 transitions. [2020-12-22 09:49:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 09:49:22,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:22,784 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] [2020-12-22 09:49:22,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:49:22,784 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1303474603, now seen corresponding path program 1 times [2020-12-22 09:49:22,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:22,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127994795] [2020-12-22 09:49:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:23,004 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 09:49:23,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127994795] [2020-12-22 09:49:23,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:23,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:23,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465767591] [2020-12-22 09:49:23,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:23,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:23,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:23,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:23,009 INFO L87 Difference]: Start difference. First operand 2139 states and 3495 transitions. Second operand 6 states. [2020-12-22 09:49:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:23,240 INFO L93 Difference]: Finished difference Result 3495 states and 5521 transitions. [2020-12-22 09:49:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:23,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-22 09:49:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:23,253 INFO L225 Difference]: With dead ends: 3495 [2020-12-22 09:49:23,254 INFO L226 Difference]: Without dead ends: 2141 [2020-12-22 09:49:23,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:49:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-12-22 09:49:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2139. [2020-12-22 09:49:23,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3471 transitions. [2020-12-22 09:49:23,371 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3471 transitions. Word has length 54 [2020-12-22 09:49:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:23,372 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3471 transitions. [2020-12-22 09:49:23,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3471 transitions. [2020-12-22 09:49:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:23,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:23,373 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] [2020-12-22 09:49:23,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:49:23,373 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:23,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1338283904, now seen corresponding path program 1 times [2020-12-22 09:49:23,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:23,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589093499] [2020-12-22 09:49:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:49:23,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589093499] [2020-12-22 09:49:23,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:23,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:23,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534116529] [2020-12-22 09:49:23,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:23,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:23,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:23,549 INFO L87 Difference]: Start difference. First operand 2139 states and 3471 transitions. Second operand 6 states. [2020-12-22 09:49:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:23,808 INFO L93 Difference]: Finished difference Result 3493 states and 5472 transitions. [2020-12-22 09:49:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:23,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-12-22 09:49:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:23,820 INFO L225 Difference]: With dead ends: 3493 [2020-12-22 09:49:23,821 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 09:49:23,824 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 09:49:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 09:49:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2020-12-22 09:49:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3447 transitions. [2020-12-22 09:49:23,966 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3447 transitions. Word has length 55 [2020-12-22 09:49:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:23,967 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3447 transitions. [2020-12-22 09:49:23,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3447 transitions. [2020-12-22 09:49:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:23,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:23,968 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] [2020-12-22 09:49:23,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:49:23,969 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:23,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash 637219326, now seen corresponding path program 1 times [2020-12-22 09:49:23,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:23,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177185234] [2020-12-22 09:49:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:24,074 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 09:49:24,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177185234] [2020-12-22 09:49:24,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:24,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:24,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872255582] [2020-12-22 09:49:24,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:24,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:24,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:24,086 INFO L87 Difference]: Start difference. First operand 2139 states and 3447 transitions. Second operand 6 states. [2020-12-22 09:49:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:24,369 INFO L93 Difference]: Finished difference Result 3493 states and 5424 transitions. [2020-12-22 09:49:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:24,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-12-22 09:49:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:24,383 INFO L225 Difference]: With dead ends: 3493 [2020-12-22 09:49:24,384 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 09:49:24,387 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 09:49:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 09:49:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2020-12-22 09:49:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3423 transitions. [2020-12-22 09:49:24,542 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3423 transitions. Word has length 55 [2020-12-22 09:49:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:24,542 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3423 transitions. [2020-12-22 09:49:24,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3423 transitions. [2020-12-22 09:49:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:24,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:24,544 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] [2020-12-22 09:49:24,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:49:24,544 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2020-12-22 09:49:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:24,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655323908] [2020-12-22 09:49:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:24,645 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 09:49:24,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655323908] [2020-12-22 09:49:24,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:24,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:24,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613672270] [2020-12-22 09:49:24,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:49:24,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:24,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:49:24,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:49:24,648 INFO L87 Difference]: Start difference. First operand 2139 states and 3423 transitions. Second operand 5 states. [2020-12-22 09:49:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:24,963 INFO L93 Difference]: Finished difference Result 3338 states and 5089 transitions. [2020-12-22 09:49:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:49:24,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 09:49:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:24,981 INFO L225 Difference]: With dead ends: 3338 [2020-12-22 09:49:24,982 INFO L226 Difference]: Without dead ends: 3336 [2020-12-22 09:49:24,984 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 09:49:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2020-12-22 09:49:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2235. [2020-12-22 09:49:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-12-22 09:49:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3511 transitions. [2020-12-22 09:49:25,156 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3511 transitions. Word has length 55 [2020-12-22 09:49:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:25,157 INFO L481 AbstractCegarLoop]: Abstraction has 2235 states and 3511 transitions. [2020-12-22 09:49:25,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:49:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3511 transitions. [2020-12-22 09:49:25,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:49:25,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:25,165 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, 1, 1] [2020-12-22 09:49:25,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:49:25,166 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash -974666853, now seen corresponding path program 1 times [2020-12-22 09:49:25,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:25,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254009094] [2020-12-22 09:49:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:25,296 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 09:49:25,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254009094] [2020-12-22 09:49:25,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:25,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:25,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229132908] [2020-12-22 09:49:25,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:49:25,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:49:25,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:49:25,305 INFO L87 Difference]: Start difference. First operand 2235 states and 3511 transitions. Second operand 4 states. [2020-12-22 09:49:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:37,430 INFO L93 Difference]: Finished difference Result 4490 states and 7820 transitions. [2020-12-22 09:49:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:49:37,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 09:49:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:37,462 INFO L225 Difference]: With dead ends: 4490 [2020-12-22 09:49:37,463 INFO L226 Difference]: Without dead ends: 3737 [2020-12-22 09:49:37,465 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 09:49:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-12-22 09:49:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2020-12-22 09:49:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3737 states. [2020-12-22 09:49:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5637 transitions. [2020-12-22 09:49:37,649 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5637 transitions. Word has length 63 [2020-12-22 09:49:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:37,650 INFO L481 AbstractCegarLoop]: Abstraction has 3737 states and 5637 transitions. [2020-12-22 09:49:37,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:49:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5637 transitions. [2020-12-22 09:49:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:49:37,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:37,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:37,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:49:37,653 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1830558034, now seen corresponding path program 1 times [2020-12-22 09:49:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:37,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831216345] [2020-12-22 09:49:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:37,764 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 09:49:37,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831216345] [2020-12-22 09:49:37,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:37,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:37,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829431672] [2020-12-22 09:49:37,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:37,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:37,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:37,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:37,766 INFO L87 Difference]: Start difference. First operand 3737 states and 5637 transitions. Second operand 6 states. [2020-12-22 09:49:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:38,538 INFO L93 Difference]: Finished difference Result 9843 states and 14206 transitions. [2020-12-22 09:49:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:38,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:49:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:38,582 INFO L225 Difference]: With dead ends: 9843 [2020-12-22 09:49:38,582 INFO L226 Difference]: Without dead ends: 8393 [2020-12-22 09:49:38,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:49:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8393 states. [2020-12-22 09:49:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8393 to 5185. [2020-12-22 09:49:39,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2020-12-22 09:49:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7653 transitions. [2020-12-22 09:49:39,020 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7653 transitions. Word has length 78 [2020-12-22 09:49:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:39,021 INFO L481 AbstractCegarLoop]: Abstraction has 5185 states and 7653 transitions. [2020-12-22 09:49:39,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:39,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7653 transitions. [2020-12-22 09:49:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:49:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:39,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:39,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:49:39,026 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:39,027 INFO L82 PathProgramCache]: Analyzing trace with hash 61775218, now seen corresponding path program 1 times [2020-12-22 09:49:39,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:39,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123796618] [2020-12-22 09:49:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:49:39,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123796618] [2020-12-22 09:49:39,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:39,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:39,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408650549] [2020-12-22 09:49:39,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:39,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:39,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:39,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:39,165 INFO L87 Difference]: Start difference. First operand 5185 states and 7653 transitions. Second operand 6 states. [2020-12-22 09:49:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:39,938 INFO L93 Difference]: Finished difference Result 11291 states and 16222 transitions. [2020-12-22 09:49:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:39,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:49:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:39,965 INFO L225 Difference]: With dead ends: 11291 [2020-12-22 09:49:39,965 INFO L226 Difference]: Without dead ends: 9841 [2020-12-22 09:49:39,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:49:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2020-12-22 09:49:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 7361. [2020-12-22 09:49:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7361 states. [2020-12-22 09:49:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 10657 transitions. [2020-12-22 09:49:40,562 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 10657 transitions. Word has length 78 [2020-12-22 09:49:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:40,562 INFO L481 AbstractCegarLoop]: Abstraction has 7361 states and 10657 transitions. [2020-12-22 09:49:40,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 10657 transitions. [2020-12-22 09:49:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:49:40,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:40,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:40,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:49:40,566 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:40,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1193415058, now seen corresponding path program 1 times [2020-12-22 09:49:40,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:40,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328415411] [2020-12-22 09:49:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:40,656 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 09:49:40,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328415411] [2020-12-22 09:49:40,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:40,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:40,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798743532] [2020-12-22 09:49:40,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:40,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:40,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:40,659 INFO L87 Difference]: Start difference. First operand 7361 states and 10657 transitions. Second operand 6 states. [2020-12-22 09:49:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:41,339 INFO L93 Difference]: Finished difference Result 12739 states and 18238 transitions. [2020-12-22 09:49:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:41,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:49:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:41,366 INFO L225 Difference]: With dead ends: 12739 [2020-12-22 09:49:41,366 INFO L226 Difference]: Without dead ends: 11289 [2020-12-22 09:49:41,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:49:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11289 states. [2020-12-22 09:49:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11289 to 8809. [2020-12-22 09:49:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8809 states. [2020-12-22 09:49:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8809 states to 8809 states and 12673 transitions. [2020-12-22 09:49:42,075 INFO L78 Accepts]: Start accepts. Automaton has 8809 states and 12673 transitions. Word has length 78 [2020-12-22 09:49:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:42,076 INFO L481 AbstractCegarLoop]: Abstraction has 8809 states and 12673 transitions. [2020-12-22 09:49:42,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 8809 states and 12673 transitions. [2020-12-22 09:49:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:49:42,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:42,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:42,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:49:42,080 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:42,080 INFO L82 PathProgramCache]: Analyzing trace with hash -42043982, now seen corresponding path program 1 times [2020-12-22 09:49:42,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:42,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938978744] [2020-12-22 09:49:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:49:42,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938978744] [2020-12-22 09:49:42,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:42,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:42,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955901549] [2020-12-22 09:49:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:42,162 INFO L87 Difference]: Start difference. First operand 8809 states and 12673 transitions. Second operand 6 states. [2020-12-22 09:49:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:43,134 INFO L93 Difference]: Finished difference Result 13339 states and 19086 transitions. [2020-12-22 09:49:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:43,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:49:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:43,163 INFO L225 Difference]: With dead ends: 13339 [2020-12-22 09:49:43,163 INFO L226 Difference]: Without dead ends: 12313 [2020-12-22 09:49:43,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:49:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12313 states. [2020-12-22 09:49:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12313 to 9833. [2020-12-22 09:49:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9833 states. [2020-12-22 09:49:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9833 states to 9833 states and 14113 transitions. [2020-12-22 09:49:43,903 INFO L78 Accepts]: Start accepts. Automaton has 9833 states and 14113 transitions. Word has length 78 [2020-12-22 09:49:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:43,904 INFO L481 AbstractCegarLoop]: Abstraction has 9833 states and 14113 transitions. [2020-12-22 09:49:43,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 9833 states and 14113 transitions. [2020-12-22 09:49:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 09:49:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:43,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:43,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:49:43,908 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1839803446, now seen corresponding path program 1 times [2020-12-22 09:49:43,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:43,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767521440] [2020-12-22 09:49:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:49:44,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767521440] [2020-12-22 09:49:44,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715734723] [2020-12-22 09:49:44,225 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 09:49:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:44,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:49:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:49:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:49:44,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:49:44,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 09:49:44,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587916832] [2020-12-22 09:49:44,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 09:49:44,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:44,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 09:49:44,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:49:44,780 INFO L87 Difference]: Start difference. First operand 9833 states and 14113 transitions. Second operand 12 states. [2020-12-22 09:49:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:50,345 INFO L93 Difference]: Finished difference Result 39339 states and 54916 transitions. [2020-12-22 09:49:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 09:49:50,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-12-22 09:49:50,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:50,518 INFO L225 Difference]: With dead ends: 39339 [2020-12-22 09:49:50,518 INFO L226 Difference]: Without dead ends: 33705 [2020-12-22 09:49:50,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:49:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33705 states. [2020-12-22 09:49:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33705 to 26657. [2020-12-22 09:49:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26657 states. [2020-12-22 09:49:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26657 states to 26657 states and 37149 transitions. [2020-12-22 09:49:52,558 INFO L78 Accepts]: Start accepts. Automaton has 26657 states and 37149 transitions. Word has length 79 [2020-12-22 09:49:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:52,558 INFO L481 AbstractCegarLoop]: Abstraction has 26657 states and 37149 transitions. [2020-12-22 09:49:52,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 09:49:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26657 states and 37149 transitions. [2020-12-22 09:49:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:49:52,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:52,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:52,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 09:49:52,771 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:52,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1196201514, now seen corresponding path program 1 times [2020-12-22 09:49:52,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:52,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133823490] [2020-12-22 09:49:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:49:52,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133823490] [2020-12-22 09:49:52,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768363264] [2020-12-22 09:49:52,995 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 09:49:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:53,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 09:49:53,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:49:53,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:49:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:49:53,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:49:53,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:49:53,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870780102] [2020-12-22 09:49:53,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:49:53,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:53,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:49:53,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:49:53,652 INFO L87 Difference]: Start difference. First operand 26657 states and 37149 transitions. Second operand 17 states. [2020-12-22 09:49:54,803 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-12-22 09:49:55,144 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-12-22 09:49:56,922 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 09:49:57,614 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 09:50:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:07,384 INFO L93 Difference]: Finished difference Result 154347 states and 210428 transitions. [2020-12-22 09:50:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:50:07,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-12-22 09:50:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:07,670 INFO L225 Difference]: With dead ends: 154347 [2020-12-22 09:50:07,670 INFO L226 Difference]: Without dead ends: 129977 [2020-12-22 09:50:07,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:50:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129977 states. [2020-12-22 09:50:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129977 to 56425. [2020-12-22 09:50:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56425 states. [2020-12-22 09:50:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56425 states to 56425 states and 77657 transitions. [2020-12-22 09:50:14,718 INFO L78 Accepts]: Start accepts. Automaton has 56425 states and 77657 transitions. Word has length 80 [2020-12-22 09:50:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:14,719 INFO L481 AbstractCegarLoop]: Abstraction has 56425 states and 77657 transitions. [2020-12-22 09:50:14,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:50:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 56425 states and 77657 transitions. [2020-12-22 09:50:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:50:14,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:14,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:14,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:50:14,927 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:14,930 INFO L82 PathProgramCache]: Analyzing trace with hash 305868284, now seen corresponding path program 1 times [2020-12-22 09:50:14,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:14,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430905676] [2020-12-22 09:50:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:15,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430905676] [2020-12-22 09:50:15,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356028439] [2020-12-22 09:50:15,162 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 09:50:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:15,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:50:15,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:50:15,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:50:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:15,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:50:15,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:50:15,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374325539] [2020-12-22 09:50:15,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:50:15,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:15,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:50:15,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:50:15,842 INFO L87 Difference]: Start difference. First operand 56425 states and 77657 transitions. Second operand 17 states. [2020-12-22 09:50:19,949 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:50:20,176 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:50:21,239 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-22 09:50:21,602 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:50:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:47,694 INFO L93 Difference]: Finished difference Result 348731 states and 473121 transitions. [2020-12-22 09:50:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:50:47,695 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-12-22 09:50:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:48,558 INFO L225 Difference]: With dead ends: 348731 [2020-12-22 09:50:48,558 INFO L226 Difference]: Without dead ends: 294593 [2020-12-22 09:50:48,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:50:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294593 states. [2020-12-22 09:51:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294593 to 134581. [2020-12-22 09:51:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134581 states. [2020-12-22 09:51:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134581 states to 134581 states and 183806 transitions. [2020-12-22 09:51:05,001 INFO L78 Accepts]: Start accepts. Automaton has 134581 states and 183806 transitions. Word has length 80 [2020-12-22 09:51:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:51:05,001 INFO L481 AbstractCegarLoop]: Abstraction has 134581 states and 183806 transitions. [2020-12-22 09:51:05,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:51:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 134581 states and 183806 transitions. [2020-12-22 09:51:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:51:05,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:51:05,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:51:05,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:51:05,225 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:51:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:51:05,226 INFO L82 PathProgramCache]: Analyzing trace with hash 643661426, now seen corresponding path program 1 times [2020-12-22 09:51:05,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:51:05,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090596586] [2020-12-22 09:51:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:51:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:51:05,610 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 09:51:05,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090596586] [2020-12-22 09:51:05,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:51:05,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:51:05,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913042940] [2020-12-22 09:51:05,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:51:05,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:51:05,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:51:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:51:05,616 INFO L87 Difference]: Start difference. First operand 134581 states and 183806 transitions. Second operand 3 states. [2020-12-22 09:51:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:20,663 INFO L93 Difference]: Finished difference Result 266877 states and 364017 transitions. [2020-12-22 09:51:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:51:20,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:51:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:20,904 INFO L225 Difference]: With dead ends: 266877 [2020-12-22 09:51:20,905 INFO L226 Difference]: Without dead ends: 134583 [2020-12-22 09:51:20,993 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 09:51:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134583 states. [2020-12-22 09:51:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134583 to 131629. [2020-12-22 09:51:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131629 states. [2020-12-22 09:51:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131629 states to 131629 states and 176922 transitions. [2020-12-22 09:51:35,126 INFO L78 Accepts]: Start accepts. Automaton has 131629 states and 176922 transitions. Word has length 80 [2020-12-22 09:51:35,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:51:35,127 INFO L481 AbstractCegarLoop]: Abstraction has 131629 states and 176922 transitions. [2020-12-22 09:51:35,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:51:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 131629 states and 176922 transitions. [2020-12-22 09:51:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:51:35,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:51:35,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:51:35,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:51:35,133 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:51:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:51:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 369973714, now seen corresponding path program 1 times [2020-12-22 09:51:35,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:51:35,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529426344] [2020-12-22 09:51:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:51:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:51:35,195 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 09:51:35,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529426344] [2020-12-22 09:51:35,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:51:35,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:51:35,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995887488] [2020-12-22 09:51:35,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:51:35,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:51:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:51:35,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:51:35,199 INFO L87 Difference]: Start difference. First operand 131629 states and 176922 transitions. Second operand 3 states. [2020-12-22 09:51:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:43,385 INFO L93 Difference]: Finished difference Result 204129 states and 273477 transitions. [2020-12-22 09:51:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:51:43,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:51:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:43,523 INFO L225 Difference]: With dead ends: 204129 [2020-12-22 09:51:43,523 INFO L226 Difference]: Without dead ends: 74787 [2020-12-22 09:51:43,600 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 09:51:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74787 states. [2020-12-22 09:51:50,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74787 to 72553. [2020-12-22 09:51:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72553 states. [2020-12-22 09:51:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72553 states to 72553 states and 95206 transitions. [2020-12-22 09:51:50,845 INFO L78 Accepts]: Start accepts. Automaton has 72553 states and 95206 transitions. Word has length 80 [2020-12-22 09:51:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:51:50,845 INFO L481 AbstractCegarLoop]: Abstraction has 72553 states and 95206 transitions. [2020-12-22 09:51:50,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:51:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 72553 states and 95206 transitions. [2020-12-22 09:51:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:51:50,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:51:50,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:51:50,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:51:50,849 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:51:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:51:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash 293809458, now seen corresponding path program 1 times [2020-12-22 09:51:50,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:51:50,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349504927] [2020-12-22 09:51:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:51:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:51:50,921 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 09:51:50,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349504927] [2020-12-22 09:51:50,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:51:50,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:51:50,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326917618] [2020-12-22 09:51:50,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:51:50,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:51:50,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:51:50,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:51:50,924 INFO L87 Difference]: Start difference. First operand 72553 states and 95206 transitions. Second operand 3 states. [2020-12-22 09:51:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:53,884 INFO L93 Difference]: Finished difference Result 99245 states and 129889 transitions. [2020-12-22 09:51:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:51:53,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:51:53,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:53,918 INFO L225 Difference]: With dead ends: 99245 [2020-12-22 09:51:53,918 INFO L226 Difference]: Without dead ends: 28979 [2020-12-22 09:51:53,943 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 09:51:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28979 states. [2020-12-22 09:51:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28979 to 27437. [2020-12-22 09:51:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27437 states. [2020-12-22 09:51:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27437 states to 27437 states and 35894 transitions. [2020-12-22 09:51:56,584 INFO L78 Accepts]: Start accepts. Automaton has 27437 states and 35894 transitions. Word has length 80 [2020-12-22 09:51:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:51:56,584 INFO L481 AbstractCegarLoop]: Abstraction has 27437 states and 35894 transitions. [2020-12-22 09:51:56,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:51:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 27437 states and 35894 transitions. [2020-12-22 09:51:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:51:56,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:51:56,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:51:56,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 09:51:56,587 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:51:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:51:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1743519558, now seen corresponding path program 1 times [2020-12-22 09:51:56,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:51:56,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857165192] [2020-12-22 09:51:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:51:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:51:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:51:56,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857165192] [2020-12-22 09:51:56,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:51:56,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:51:56,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123891148] [2020-12-22 09:51:56,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:51:56,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:51:56,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:51:56,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:51:56,655 INFO L87 Difference]: Start difference. First operand 27437 states and 35894 transitions. Second operand 6 states. [2020-12-22 09:51:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:58,757 INFO L93 Difference]: Finished difference Result 46257 states and 60155 transitions. [2020-12-22 09:51:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:51:58,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 09:51:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:58,785 INFO L225 Difference]: With dead ends: 46257 [2020-12-22 09:51:58,786 INFO L226 Difference]: Without dead ends: 21226 [2020-12-22 09:51:58,800 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 09:51:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21226 states. [2020-12-22 09:52:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21226 to 21226. [2020-12-22 09:52:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21226 states. [2020-12-22 09:52:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21226 states to 21226 states and 27586 transitions. [2020-12-22 09:52:00,910 INFO L78 Accepts]: Start accepts. Automaton has 21226 states and 27586 transitions. Word has length 80 [2020-12-22 09:52:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:00,911 INFO L481 AbstractCegarLoop]: Abstraction has 21226 states and 27586 transitions. [2020-12-22 09:52:00,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:52:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21226 states and 27586 transitions. [2020-12-22 09:52:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:52:00,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:00,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:00,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 09:52:00,914 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1113390490, now seen corresponding path program 1 times [2020-12-22 09:52:00,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:00,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293160405] [2020-12-22 09:52:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 09:52:00,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293160405] [2020-12-22 09:52:00,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:00,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:52:00,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521546536] [2020-12-22 09:52:00,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:52:00,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:52:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:52:00,984 INFO L87 Difference]: Start difference. First operand 21226 states and 27586 transitions. Second operand 6 states. [2020-12-22 09:52:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:02,950 INFO L93 Difference]: Finished difference Result 35962 states and 46403 transitions. [2020-12-22 09:52:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:52:02,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 09:52:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:02,969 INFO L225 Difference]: With dead ends: 35962 [2020-12-22 09:52:02,970 INFO L226 Difference]: Without dead ends: 17062 [2020-12-22 09:52:02,979 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 09:52:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17062 states. [2020-12-22 09:52:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17062 to 17062. [2020-12-22 09:52:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17062 states. [2020-12-22 09:52:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17062 states to 17062 states and 22190 transitions. [2020-12-22 09:52:04,701 INFO L78 Accepts]: Start accepts. Automaton has 17062 states and 22190 transitions. Word has length 80 [2020-12-22 09:52:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:04,701 INFO L481 AbstractCegarLoop]: Abstraction has 17062 states and 22190 transitions. [2020-12-22 09:52:04,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:52:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17062 states and 22190 transitions. [2020-12-22 09:52:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 09:52:04,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:04,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:04,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 09:52:04,704 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash -68740960, now seen corresponding path program 1 times [2020-12-22 09:52:04,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:04,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416683600] [2020-12-22 09:52:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:04,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416683600] [2020-12-22 09:52:04,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495331311] [2020-12-22 09:52:04,921 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 09:52:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:05,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 09:52:05,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:52:05,303 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:52:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:05,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:52:05,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:52:05,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661544266] [2020-12-22 09:52:05,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:52:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:52:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:52:05,609 INFO L87 Difference]: Start difference. First operand 17062 states and 22190 transitions. Second operand 17 states. [2020-12-22 09:52:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:12,227 INFO L93 Difference]: Finished difference Result 55762 states and 71241 transitions. [2020-12-22 09:52:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 09:52:12,228 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-12-22 09:52:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:12,272 INFO L225 Difference]: With dead ends: 55762 [2020-12-22 09:52:12,272 INFO L226 Difference]: Without dead ends: 43089 [2020-12-22 09:52:12,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 09:52:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43089 states. [2020-12-22 09:52:15,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43089 to 31061. [2020-12-22 09:52:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31061 states. [2020-12-22 09:52:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31061 states to 31061 states and 39820 transitions. [2020-12-22 09:52:15,917 INFO L78 Accepts]: Start accepts. Automaton has 31061 states and 39820 transitions. Word has length 81 [2020-12-22 09:52:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:15,917 INFO L481 AbstractCegarLoop]: Abstraction has 31061 states and 39820 transitions. [2020-12-22 09:52:15,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:52:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31061 states and 39820 transitions. [2020-12-22 09:52:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 09:52:15,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:15,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:16,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:52:16,134 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:16,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1149244438, now seen corresponding path program 1 times [2020-12-22 09:52:16,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:16,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886989769] [2020-12-22 09:52:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:16,213 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 09:52:16,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886989769] [2020-12-22 09:52:16,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:16,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:52:16,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210059838] [2020-12-22 09:52:16,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:52:16,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:16,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:52:16,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:52:16,215 INFO L87 Difference]: Start difference. First operand 31061 states and 39820 transitions. Second operand 3 states. [2020-12-22 09:52:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:18,301 INFO L93 Difference]: Finished difference Result 43649 states and 55858 transitions. [2020-12-22 09:52:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:52:18,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 09:52:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:18,324 INFO L225 Difference]: With dead ends: 43649 [2020-12-22 09:52:18,324 INFO L226 Difference]: Without dead ends: 17613 [2020-12-22 09:52:18,336 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 09:52:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17613 states. [2020-12-22 09:52:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17613 to 17611. [2020-12-22 09:52:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17611 states. [2020-12-22 09:52:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17611 states to 17611 states and 22312 transitions. [2020-12-22 09:52:20,297 INFO L78 Accepts]: Start accepts. Automaton has 17611 states and 22312 transitions. Word has length 81 [2020-12-22 09:52:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:20,297 INFO L481 AbstractCegarLoop]: Abstraction has 17611 states and 22312 transitions. [2020-12-22 09:52:20,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:52:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17611 states and 22312 transitions. [2020-12-22 09:52:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 09:52:20,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:20,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:20,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 09:52:20,299 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash -549108429, now seen corresponding path program 1 times [2020-12-22 09:52:20,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:20,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412948394] [2020-12-22 09:52:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:22,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412948394] [2020-12-22 09:52:22,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053192902] [2020-12-22 09:52:22,324 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 09:52:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:22,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 09:52:22,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:52:23,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:52:23,544 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-12-22 09:52:24,435 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-22 09:52:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:24,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:52:24,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 39 [2020-12-22 09:52:24,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689729857] [2020-12-22 09:52:24,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 09:52:24,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:24,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 09:52:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 09:52:24,615 INFO L87 Difference]: Start difference. First operand 17611 states and 22312 transitions. Second operand 39 states. [2020-12-22 09:52:25,164 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-12-22 09:52:26,544 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-12-22 09:52:26,955 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-22 09:52:27,253 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-12-22 09:52:27,517 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-22 09:52:27,892 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-22 09:52:28,233 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-22 09:52:28,708 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-12-22 09:52:29,369 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-12-22 09:52:30,214 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 96 [2020-12-22 09:52:31,003 WARN L197 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-12-22 09:52:31,549 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-12-22 09:52:32,065 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-12-22 09:52:32,567 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 09:52:33,126 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 09:52:33,606 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 09:52:34,205 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 09:52:34,596 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 09:52:35,029 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 09:52:35,715 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 09:52:36,125 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 09:52:36,659 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-12-22 09:52:37,169 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 09:52:37,492 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 09:52:37,850 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 09:52:38,213 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 09:52:38,569 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 09:52:39,101 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-12-22 09:52:39,415 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-12-22 09:52:40,121 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 09:52:40,583 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-22 09:52:40,946 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 09:52:41,351 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-12-22 09:52:41,718 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-22 09:52:42,126 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-12-22 09:52:42,396 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 09:52:43,059 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-12-22 09:52:43,491 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-22 09:52:43,784 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 09:52:44,091 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 09:52:44,808 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 09:52:45,120 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 09:52:45,467 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 09:52:45,902 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 09:52:46,467 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-12-22 09:52:46,860 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 09:52:47,379 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-22 09:52:48,180 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 09:52:49,373 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-22 09:52:49,897 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-22 09:52:50,771 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-12-22 09:52:51,311 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-12-22 09:52:51,777 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-22 09:52:52,155 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 09:52:52,674 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-22 09:52:53,021 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 09:52:53,688 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-12-22 09:52:54,430 WARN L197 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79