/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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:40:14,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:40:14,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:40:14,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:40:14,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:40:14,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:40:14,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:40:14,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:40:14,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:40:14,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:40:14,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:40:14,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:40:14,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:40:14,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:40:14,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:40:14,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:40:14,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:40:14,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:40:14,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:40:14,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:40:14,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:40:14,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:40:14,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:40:14,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:40:14,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:40:14,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:40:14,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:40:14,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:40:14,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:40:14,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:40:14,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:40:14,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:40:14,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:40:14,979 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:40:14,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:40:14,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:40:14,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:40:14,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:40:14,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:40:14,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:40:14,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:40:14,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:40:14,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:40:14,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:40:14,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:40:14,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:40:14,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:40:14,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:40:14,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:40:14,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:40:15,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:40:15,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:40:15,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:40:15,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:40:15,372 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:40:15,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 08:40:15,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbc7f87b/68a16be2e5f34530b8ededd85c7a819b/FLAGec496ae8f [2020-12-22 08:40:16,084 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:40:16,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 08:40:16,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbc7f87b/68a16be2e5f34530b8ededd85c7a819b/FLAGec496ae8f [2020-12-22 08:40:16,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbc7f87b/68a16be2e5f34530b8ededd85c7a819b [2020-12-22 08:40:16,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:40:16,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:40:16,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:16,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:40:16,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:40:16,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:16,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3059bf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16, skipping insertion in model container [2020-12-22 08:40:16,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:16,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:40:16,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:40:16,725 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4498,4511] [2020-12-22 08:40:16,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:16,805 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:40:16,848 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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4498,4511] [2020-12-22 08:40:16,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:40:16,917 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:40:16,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16 WrapperNode [2020-12-22 08:40:16,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:40:16,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:16,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:40:16,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:40:16,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:16,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:40:17,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:40:17,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:40:17,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:40:17,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (1/1) ... [2020-12-22 08:40:17,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:40:17,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:40:17,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:40:17,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:40:17,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (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 08:40:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:40:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:40:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:40:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:40:17,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:40:17,993 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:40:17,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:17 BoogieIcfgContainer [2020-12-22 08:40:18,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:40:18,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:40:18,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:40:18,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:40:18,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:40:16" (1/3) ... [2020-12-22 08:40:18,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbc1bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:18, skipping insertion in model container [2020-12-22 08:40:18,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:40:16" (2/3) ... [2020-12-22 08:40:18,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbc1bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:40:18, skipping insertion in model container [2020-12-22 08:40:18,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:40:17" (3/3) ... [2020-12-22 08:40:18,029 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 08:40:18,046 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:40:18,057 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:40:18,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:40:18,154 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:40:18,157 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:40:18,157 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:40:18,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:40:18,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:40:18,158 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:40:18,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:40:18,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:40:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-12-22 08:40:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 08:40:18,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:18,186 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] [2020-12-22 08:40:18,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash -347547403, now seen corresponding path program 1 times [2020-12-22 08:40:18,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:18,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029930496] [2020-12-22 08:40:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:18,571 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 08:40:18,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029930496] [2020-12-22 08:40:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:18,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:40:18,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14066405] [2020-12-22 08:40:18,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:40:18,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:40:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:40:18,607 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-12-22 08:40:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:18,713 INFO L93 Difference]: Finished difference Result 177 states and 286 transitions. [2020-12-22 08:40:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:40:18,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 08:40:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:18,729 INFO L225 Difference]: With dead ends: 177 [2020-12-22 08:40:18,729 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 08:40:18,733 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 08:40:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 08:40:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-12-22 08:40:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 08:40:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 169 transitions. [2020-12-22 08:40:18,796 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 169 transitions. Word has length 47 [2020-12-22 08:40:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:18,797 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 169 transitions. [2020-12-22 08:40:18,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:40:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 169 transitions. [2020-12-22 08:40:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 08:40:18,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:18,800 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] [2020-12-22 08:40:18,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:40:18,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash -391185874, now seen corresponding path program 1 times [2020-12-22 08:40:18,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:18,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491496102] [2020-12-22 08:40:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:18,965 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 08:40:18,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491496102] [2020-12-22 08:40:18,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:18,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:40:18,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059014250] [2020-12-22 08:40:18,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:40:18,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:18,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:40:18,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:40:18,971 INFO L87 Difference]: Start difference. First operand 116 states and 169 transitions. Second operand 3 states. [2020-12-22 08:40:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:19,038 INFO L93 Difference]: Finished difference Result 280 states and 429 transitions. [2020-12-22 08:40:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:40:19,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 08:40:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:19,044 INFO L225 Difference]: With dead ends: 280 [2020-12-22 08:40:19,046 INFO L226 Difference]: Without dead ends: 190 [2020-12-22 08:40:19,048 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 08:40:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-22 08:40:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-12-22 08:40:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 08:40:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 283 transitions. [2020-12-22 08:40:19,110 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 283 transitions. Word has length 48 [2020-12-22 08:40:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:19,114 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 283 transitions. [2020-12-22 08:40:19,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:40:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 283 transitions. [2020-12-22 08:40:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:40:19,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:19,116 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] [2020-12-22 08:40:19,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:40:19,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:19,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2047730124, now seen corresponding path program 1 times [2020-12-22 08:40:19,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:19,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991099679] [2020-12-22 08:40:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:19,329 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 08:40:19,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991099679] [2020-12-22 08:40:19,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:19,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:40:19,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043813769] [2020-12-22 08:40:19,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:40:19,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:40:19,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:40:19,333 INFO L87 Difference]: Start difference. First operand 188 states and 283 transitions. Second operand 3 states. [2020-12-22 08:40:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:19,384 INFO L93 Difference]: Finished difference Result 480 states and 745 transitions. [2020-12-22 08:40:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:40:19,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 08:40:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:19,389 INFO L225 Difference]: With dead ends: 480 [2020-12-22 08:40:19,389 INFO L226 Difference]: Without dead ends: 318 [2020-12-22 08:40:19,391 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 08:40:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-12-22 08:40:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2020-12-22 08:40:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-22 08:40:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 483 transitions. [2020-12-22 08:40:19,458 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 483 transitions. Word has length 49 [2020-12-22 08:40:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:19,462 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 483 transitions. [2020-12-22 08:40:19,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:40:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 483 transitions. [2020-12-22 08:40:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:40:19,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:19,464 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] [2020-12-22 08:40:19,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:40:19,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:19,466 INFO L82 PathProgramCache]: Analyzing trace with hash -415311335, now seen corresponding path program 1 times [2020-12-22 08:40:19,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:19,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983502858] [2020-12-22 08:40:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:19,546 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 08:40:19,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983502858] [2020-12-22 08:40:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:19,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:40:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58607576] [2020-12-22 08:40:19,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:40:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:19,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:40:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:40:19,554 INFO L87 Difference]: Start difference. First operand 316 states and 483 transitions. Second operand 3 states. [2020-12-22 08:40:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:19,632 INFO L93 Difference]: Finished difference Result 832 states and 1293 transitions. [2020-12-22 08:40:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:40:19,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 08:40:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:19,638 INFO L225 Difference]: With dead ends: 832 [2020-12-22 08:40:19,638 INFO L226 Difference]: Without dead ends: 542 [2020-12-22 08:40:19,640 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 08:40:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-12-22 08:40:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2020-12-22 08:40:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-12-22 08:40:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 827 transitions. [2020-12-22 08:40:19,683 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 827 transitions. Word has length 50 [2020-12-22 08:40:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:19,683 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 827 transitions. [2020-12-22 08:40:19,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:40:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 827 transitions. [2020-12-22 08:40:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:40:19,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:19,685 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] [2020-12-22 08:40:19,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:40:19,686 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash -103942672, now seen corresponding path program 1 times [2020-12-22 08:40:19,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:19,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696962071] [2020-12-22 08:40:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:19,864 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 08:40:19,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696962071] [2020-12-22 08:40:19,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:19,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:19,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901873674] [2020-12-22 08:40:19,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:19,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:19,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:19,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:19,870 INFO L87 Difference]: Start difference. First operand 540 states and 827 transitions. Second operand 5 states. [2020-12-22 08:40:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:20,271 INFO L93 Difference]: Finished difference Result 1568 states and 2429 transitions. [2020-12-22 08:40:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:20,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:40:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:20,280 INFO L225 Difference]: With dead ends: 1568 [2020-12-22 08:40:20,281 INFO L226 Difference]: Without dead ends: 1054 [2020-12-22 08:40:20,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-12-22 08:40:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1052. [2020-12-22 08:40:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 08:40:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1619 transitions. [2020-12-22 08:40:20,379 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1619 transitions. Word has length 51 [2020-12-22 08:40:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:20,380 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1619 transitions. [2020-12-22 08:40:20,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1619 transitions. [2020-12-22 08:40:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:40:20,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:20,382 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] [2020-12-22 08:40:20,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:40:20,382 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:20,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1568014229, now seen corresponding path program 1 times [2020-12-22 08:40:20,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:20,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51682118] [2020-12-22 08:40:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:20,470 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 08:40:20,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51682118] [2020-12-22 08:40:20,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:20,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:20,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654557476] [2020-12-22 08:40:20,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:20,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:20,473 INFO L87 Difference]: Start difference. First operand 1052 states and 1619 transitions. Second operand 5 states. [2020-12-22 08:40:20,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:20,706 INFO L93 Difference]: Finished difference Result 2078 states and 3212 transitions. [2020-12-22 08:40:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:20,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:40:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:20,714 INFO L225 Difference]: With dead ends: 2078 [2020-12-22 08:40:20,715 INFO L226 Difference]: Without dead ends: 1052 [2020-12-22 08:40:20,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-22 08:40:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-12-22 08:40:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 08:40:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1603 transitions. [2020-12-22 08:40:20,820 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1603 transitions. Word has length 51 [2020-12-22 08:40:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:20,820 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1603 transitions. [2020-12-22 08:40:20,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1603 transitions. [2020-12-22 08:40:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:40:20,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:20,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:20,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:40:20,823 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash 884922534, now seen corresponding path program 1 times [2020-12-22 08:40:20,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:20,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25273161] [2020-12-22 08:40:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:20,899 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 08:40:20,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25273161] [2020-12-22 08:40:20,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:20,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:40:20,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551720341] [2020-12-22 08:40:20,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:20,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:20,902 INFO L87 Difference]: Start difference. First operand 1052 states and 1603 transitions. Second operand 5 states. [2020-12-22 08:40:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:21,159 INFO L93 Difference]: Finished difference Result 2078 states and 3180 transitions. [2020-12-22 08:40:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:21,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:40:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:21,167 INFO L225 Difference]: With dead ends: 2078 [2020-12-22 08:40:21,168 INFO L226 Difference]: Without dead ends: 1052 [2020-12-22 08:40:21,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-22 08:40:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-12-22 08:40:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-12-22 08:40:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1587 transitions. [2020-12-22 08:40:21,262 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1587 transitions. Word has length 51 [2020-12-22 08:40:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:21,262 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1587 transitions. [2020-12-22 08:40:21,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1587 transitions. [2020-12-22 08:40:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:40:21,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:21,270 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] [2020-12-22 08:40:21,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:40:21,270 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -562107061, now seen corresponding path program 1 times [2020-12-22 08:40:21,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:21,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080723186] [2020-12-22 08:40:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:21,398 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 08:40:21,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080723186] [2020-12-22 08:40:21,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:21,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:21,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922314097] [2020-12-22 08:40:21,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:21,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:21,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:21,401 INFO L87 Difference]: Start difference. First operand 1052 states and 1587 transitions. Second operand 6 states. [2020-12-22 08:40:22,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:22,278 INFO L93 Difference]: Finished difference Result 9260 states and 14075 transitions. [2020-12-22 08:40:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:40:22,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 08:40:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:22,327 INFO L225 Difference]: With dead ends: 9260 [2020-12-22 08:40:22,327 INFO L226 Difference]: Without dead ends: 8234 [2020-12-22 08:40:22,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:40:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2020-12-22 08:40:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 2076. [2020-12-22 08:40:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2020-12-22 08:40:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3083 transitions. [2020-12-22 08:40:22,647 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3083 transitions. Word has length 51 [2020-12-22 08:40:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:22,649 INFO L481 AbstractCegarLoop]: Abstraction has 2076 states and 3083 transitions. [2020-12-22 08:40:22,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3083 transitions. [2020-12-22 08:40:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:40:22,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:22,652 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] [2020-12-22 08:40:22,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:40:22,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:22,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash 59171559, now seen corresponding path program 1 times [2020-12-22 08:40:22,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:22,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425572170] [2020-12-22 08:40:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:22,736 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 08:40:22,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425572170] [2020-12-22 08:40:22,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:22,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:40:22,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063769635] [2020-12-22 08:40:22,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:40:22,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:40:22,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:40:22,747 INFO L87 Difference]: Start difference. First operand 2076 states and 3083 transitions. Second operand 3 states. [2020-12-22 08:40:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:23,027 INFO L93 Difference]: Finished difference Result 4618 states and 6855 transitions. [2020-12-22 08:40:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:40:23,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 08:40:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:23,041 INFO L225 Difference]: With dead ends: 4618 [2020-12-22 08:40:23,041 INFO L226 Difference]: Without dead ends: 2568 [2020-12-22 08:40:23,046 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 08:40:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2020-12-22 08:40:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2020-12-22 08:40:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2566 states. [2020-12-22 08:40:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3773 transitions. [2020-12-22 08:40:23,311 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3773 transitions. Word has length 53 [2020-12-22 08:40:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:23,311 INFO L481 AbstractCegarLoop]: Abstraction has 2566 states and 3773 transitions. [2020-12-22 08:40:23,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:40:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3773 transitions. [2020-12-22 08:40:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:40:23,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:23,312 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] [2020-12-22 08:40:23,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:40:23,313 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:23,313 INFO L82 PathProgramCache]: Analyzing trace with hash 80174214, now seen corresponding path program 1 times [2020-12-22 08:40:23,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:23,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651637872] [2020-12-22 08:40:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:23,566 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 08:40:23,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651637872] [2020-12-22 08:40:23,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:23,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:23,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115795267] [2020-12-22 08:40:23,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:23,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:23,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:23,569 INFO L87 Difference]: Start difference. First operand 2566 states and 3773 transitions. Second operand 6 states. [2020-12-22 08:40:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:24,237 INFO L93 Difference]: Finished difference Result 7638 states and 11329 transitions. [2020-12-22 08:40:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:24,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:40:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:24,264 INFO L225 Difference]: With dead ends: 7638 [2020-12-22 08:40:24,264 INFO L226 Difference]: Without dead ends: 5100 [2020-12-22 08:40:24,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2020-12-22 08:40:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 2566. [2020-12-22 08:40:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2566 states. [2020-12-22 08:40:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3733 transitions. [2020-12-22 08:40:24,608 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3733 transitions. Word has length 53 [2020-12-22 08:40:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:24,608 INFO L481 AbstractCegarLoop]: Abstraction has 2566 states and 3733 transitions. [2020-12-22 08:40:24,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3733 transitions. [2020-12-22 08:40:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:40:24,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:24,609 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 08:40:24,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:40:24,610 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1811476054, now seen corresponding path program 1 times [2020-12-22 08:40:24,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:24,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855395767] [2020-12-22 08:40:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:24,727 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 08:40:24,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855395767] [2020-12-22 08:40:24,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:24,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:40:24,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347787738] [2020-12-22 08:40:24,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:40:24,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:40:24,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:40:24,729 INFO L87 Difference]: Start difference. First operand 2566 states and 3733 transitions. Second operand 5 states. [2020-12-22 08:40:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:25,318 INFO L93 Difference]: Finished difference Result 4888 states and 7077 transitions. [2020-12-22 08:40:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:25,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 08:40:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:25,346 INFO L225 Difference]: With dead ends: 4888 [2020-12-22 08:40:25,347 INFO L226 Difference]: Without dead ends: 4886 [2020-12-22 08:40:25,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2020-12-22 08:40:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 2694. [2020-12-22 08:40:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2020-12-22 08:40:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3853 transitions. [2020-12-22 08:40:25,734 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3853 transitions. Word has length 54 [2020-12-22 08:40:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:25,735 INFO L481 AbstractCegarLoop]: Abstraction has 2694 states and 3853 transitions. [2020-12-22 08:40:25,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:40:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3853 transitions. [2020-12-22 08:40:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:40:25,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:25,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:25,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:40:25,738 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1690284398, now seen corresponding path program 1 times [2020-12-22 08:40:25,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:25,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754150141] [2020-12-22 08:40:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:40:25,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754150141] [2020-12-22 08:40:25,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:25,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:25,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059715197] [2020-12-22 08:40:25,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:25,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:25,895 INFO L87 Difference]: Start difference. First operand 2694 states and 3853 transitions. Second operand 6 states. [2020-12-22 08:40:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:27,153 INFO L93 Difference]: Finished difference Result 13720 states and 19666 transitions. [2020-12-22 08:40:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:27,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:40:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:27,187 INFO L225 Difference]: With dead ends: 13720 [2020-12-22 08:40:27,187 INFO L226 Difference]: Without dead ends: 11542 [2020-12-22 08:40:27,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2020-12-22 08:40:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 5118. [2020-12-22 08:40:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5118 states. [2020-12-22 08:40:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7301 transitions. [2020-12-22 08:40:28,042 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7301 transitions. Word has length 76 [2020-12-22 08:40:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:28,043 INFO L481 AbstractCegarLoop]: Abstraction has 5118 states and 7301 transitions. [2020-12-22 08:40:28,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7301 transitions. [2020-12-22 08:40:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:40:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:28,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:28,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:40:28,047 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash -34257664, now seen corresponding path program 1 times [2020-12-22 08:40:28,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:28,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582129709] [2020-12-22 08:40:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 08:40:28,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582129709] [2020-12-22 08:40:28,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:28,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:28,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636194686] [2020-12-22 08:40:28,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:28,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:28,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:28,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:28,188 INFO L87 Difference]: Start difference. First operand 5118 states and 7301 transitions. Second operand 6 states. [2020-12-22 08:40:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:29,538 INFO L93 Difference]: Finished difference Result 16384 states and 23458 transitions. [2020-12-22 08:40:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:29,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:40:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:29,580 INFO L225 Difference]: With dead ends: 16384 [2020-12-22 08:40:29,581 INFO L226 Difference]: Without dead ends: 13718 [2020-12-22 08:40:29,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2020-12-22 08:40:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 8870. [2020-12-22 08:40:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8870 states. [2020-12-22 08:40:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 12613 transitions. [2020-12-22 08:40:30,932 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 12613 transitions. Word has length 76 [2020-12-22 08:40:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:30,932 INFO L481 AbstractCegarLoop]: Abstraction has 8870 states and 12613 transitions. [2020-12-22 08:40:30,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 12613 transitions. [2020-12-22 08:40:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:40:30,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:30,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:30,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:40:30,938 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1119688442, now seen corresponding path program 1 times [2020-12-22 08:40:30,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:30,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771548140] [2020-12-22 08:40:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:40:31,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771548140] [2020-12-22 08:40:31,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:31,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:31,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521763532] [2020-12-22 08:40:31,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:31,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:31,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:31,067 INFO L87 Difference]: Start difference. First operand 8870 states and 12613 transitions. Second operand 6 states. [2020-12-22 08:40:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:32,826 INFO L93 Difference]: Finished difference Result 19048 states and 27242 transitions. [2020-12-22 08:40:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:32,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:40:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:32,878 INFO L225 Difference]: With dead ends: 19048 [2020-12-22 08:40:32,878 INFO L226 Difference]: Without dead ends: 16382 [2020-12-22 08:40:32,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16382 states. [2020-12-22 08:40:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16382 to 11534. [2020-12-22 08:40:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11534 states. [2020-12-22 08:40:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 16397 transitions. [2020-12-22 08:40:34,278 INFO L78 Accepts]: Start accepts. Automaton has 11534 states and 16397 transitions. Word has length 76 [2020-12-22 08:40:34,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:34,278 INFO L481 AbstractCegarLoop]: Abstraction has 11534 states and 16397 transitions. [2020-12-22 08:40:34,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11534 states and 16397 transitions. [2020-12-22 08:40:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:40:34,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:34,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:34,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:40:34,284 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash 261787764, now seen corresponding path program 1 times [2020-12-22 08:40:34,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:34,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948679011] [2020-12-22 08:40:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 08:40:34,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948679011] [2020-12-22 08:40:34,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:40:34,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:40:34,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571855514] [2020-12-22 08:40:34,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:40:34,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:34,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:40:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:40:34,401 INFO L87 Difference]: Start difference. First operand 11534 states and 16397 transitions. Second operand 6 states. [2020-12-22 08:40:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:36,577 INFO L93 Difference]: Finished difference Result 21712 states and 31026 transitions. [2020-12-22 08:40:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:40:36,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 08:40:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:36,638 INFO L225 Difference]: With dead ends: 21712 [2020-12-22 08:40:36,639 INFO L226 Difference]: Without dead ends: 19046 [2020-12-22 08:40:36,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:40:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2020-12-22 08:40:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 14198. [2020-12-22 08:40:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14198 states. [2020-12-22 08:40:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 20181 transitions. [2020-12-22 08:40:38,797 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 20181 transitions. Word has length 76 [2020-12-22 08:40:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:38,798 INFO L481 AbstractCegarLoop]: Abstraction has 14198 states and 20181 transitions. [2020-12-22 08:40:38,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:40:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 20181 transitions. [2020-12-22 08:40:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:40:38,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:38,803 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] [2020-12-22 08:40:38,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:40:38,803 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:38,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1414120063, now seen corresponding path program 1 times [2020-12-22 08:40:38,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:38,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972781952] [2020-12-22 08:40:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:40:38,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972781952] [2020-12-22 08:40:38,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773431871] [2020-12-22 08:40:38,941 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 08:40:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:39,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 08:40:39,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:40:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:40:39,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:40:39,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 08:40:39,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30349315] [2020-12-22 08:40:39,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:40:39,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:39,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:40:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:39,447 INFO L87 Difference]: Start difference. First operand 14198 states and 20181 transitions. Second operand 7 states. [2020-12-22 08:40:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:40:42,742 INFO L93 Difference]: Finished difference Result 35693 states and 50844 transitions. [2020-12-22 08:40:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:40:42,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-12-22 08:40:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:40:42,807 INFO L225 Difference]: With dead ends: 35693 [2020-12-22 08:40:42,807 INFO L226 Difference]: Without dead ends: 23723 [2020-12-22 08:40:42,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:40:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23723 states. [2020-12-22 08:40:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23723 to 23526. [2020-12-22 08:40:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23526 states. [2020-12-22 08:40:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 32933 transitions. [2020-12-22 08:40:46,185 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 32933 transitions. Word has length 77 [2020-12-22 08:40:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:40:46,186 INFO L481 AbstractCegarLoop]: Abstraction has 23526 states and 32933 transitions. [2020-12-22 08:40:46,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:40:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 32933 transitions. [2020-12-22 08:40:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:40:46,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:40:46,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:40:46,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 08:40:46,405 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:40:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:40:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2122663330, now seen corresponding path program 1 times [2020-12-22 08:40:46,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:40:46,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771773901] [2020-12-22 08:40:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:40:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:46,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771773901] [2020-12-22 08:40:46,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981155362] [2020-12-22 08:40:46,697 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 08:40:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:40:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 08:40:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:40:47,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 08:40:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:40:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:40:47,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 08:40:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078452843] [2020-12-22 08:40:47,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 08:40:47,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:40:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 08:40:47,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:40:47,497 INFO L87 Difference]: Start difference. First operand 23526 states and 32933 transitions. Second operand 17 states. [2020-12-22 08:40:48,028 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 08:40:48,632 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:49,838 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:40:50,303 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:50,544 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:50,998 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:40:51,856 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:40:52,696 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:40:53,073 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:53,239 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:40:53,904 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:40:54,043 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:54,296 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:54,620 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:40:55,172 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:40:55,888 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:40:56,071 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:40:56,640 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:57,119 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:40:57,738 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:01,291 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:01,473 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:41:01,642 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:41:02,157 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:41:04,250 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:41:04,677 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-22 08:41:04,979 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:41:05,955 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:06,736 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:06,919 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:41:07,585 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:41:07,843 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 08:41:08,985 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:41:09,539 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:41:09,872 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-22 08:41:10,095 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:41:11,628 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:41:12,161 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:41:12,339 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:41:13,217 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:41:13,530 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:41:14,488 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 08:41:15,198 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:41:15,979 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:41:16,714 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:41:17,705 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-12-22 08:41:18,775 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:41:20,343 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:00,552 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:42:00,773 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:42:02,205 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:02,486 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:02,870 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:03,044 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:03,278 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:05,089 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:05,575 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:06,145 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:06,348 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:08,644 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:42:10,387 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:18,923 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:20,149 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:28,073 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:28,381 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:29,463 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:29,702 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:42:29,887 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:30,952 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:31,177 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:32,865 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:42:33,837 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:35,676 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:42:36,007 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:42:36,506 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:37,937 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:42:38,215 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:42:38,686 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:42:38,891 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:39,752 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:40,152 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:46,614 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-12-22 08:42:47,990 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:48,242 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:42:52,992 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:42:53,352 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:55,310 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:42:55,470 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-22 08:42:55,872 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:42:56,834 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:42:57,191 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:43:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:43:08,730 INFO L93 Difference]: Finished difference Result 649292 states and 889037 transitions. [2020-12-22 08:43:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 461 states. [2020-12-22 08:43:08,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-12-22 08:43:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:43:10,203 INFO L225 Difference]: With dead ends: 649292 [2020-12-22 08:43:10,203 INFO L226 Difference]: Without dead ends: 625794 [2020-12-22 08:43:10,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106232 ImplicationChecksByTransitivity, 43.4s TimeCoverageRelationStatistics Valid=21036, Invalid=201276, Unknown=0, NotChecked=0, Total=222312 [2020-12-22 08:43:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625794 states. [2020-12-22 08:43:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625794 to 98662. [2020-12-22 08:43:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98662 states. [2020-12-22 08:43:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98662 states to 98662 states and 136823 transitions. [2020-12-22 08:43:31,884 INFO L78 Accepts]: Start accepts. Automaton has 98662 states and 136823 transitions. Word has length 78 [2020-12-22 08:43:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:43:31,884 INFO L481 AbstractCegarLoop]: Abstraction has 98662 states and 136823 transitions. [2020-12-22 08:43:31,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 08:43:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 98662 states and 136823 transitions. [2020-12-22 08:43:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:43:31,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:43:31,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:43:32,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 08:43:32,108 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:43:32,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:43:32,110 INFO L82 PathProgramCache]: Analyzing trace with hash 635552222, now seen corresponding path program 1 times [2020-12-22 08:43:32,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:43:32,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039491969] [2020-12-22 08:43:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:43:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:32,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039491969] [2020-12-22 08:43:32,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398047330] [2020-12-22 08:43:32,409 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 08:43:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:43:32,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 08:43:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:43:32,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 08:43:33,066 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-12-22 08:43:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:43:33,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:43:33,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-22 08:43:33,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648988243] [2020-12-22 08:43:33,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:43:33,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:43:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:43:33,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:43:33,886 INFO L87 Difference]: Start difference. First operand 98662 states and 136823 transitions. Second operand 20 states. [2020-12-22 08:43:34,670 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-22 08:43:35,000 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-22 08:43:35,382 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:43:36,082 WARN L197 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:43:36,414 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:43:37,032 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:43:37,711 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:43:38,418 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:43:38,846 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:43:39,596 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:43:40,211 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:43:40,515 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:43:40,860 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:43:41,513 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:43:42,201 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:43:42,544 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:43:43,030 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:43:44,113 WARN L197 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:43:45,036 WARN L197 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:43:45,867 WARN L197 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:43:46,641 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:43:47,076 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:43:47,493 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-12-22 08:43:48,096 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:43:48,515 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:43:49,754 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:43:50,200 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:43:50,570 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:43:50,971 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:43:51,847 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:43:52,629 WARN L197 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:43:53,135 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-12-22 08:43:54,101 WARN L197 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-22 08:43:54,527 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:43:55,300 WARN L197 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-12-22 08:43:55,901 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:43:56,866 WARN L197 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:43:57,412 WARN L197 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:43:58,395 WARN L197 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:43:58,985 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-12-22 08:44:00,062 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-22 08:44:00,541 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:44:01,384 WARN L197 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-12-22 08:44:01,911 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:44:02,970 WARN L197 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:44:03,441 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-12-22 08:44:04,614 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:44:05,187 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:44:05,771 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 08:44:06,674 WARN L197 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:44:07,147 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:44:07,603 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-22 08:44:08,684 WARN L197 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-12-22 08:44:09,282 WARN L197 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:44:09,923 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 08:44:11,240 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:44:12,695 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-22 08:44:14,023 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:44:15,236 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:44:16,536 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:44:18,150 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 132 DAG size of output: 124