/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:06:37,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:06:37,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:06:37,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:06:37,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:06:37,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:06:37,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:06:37,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:06:37,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:06:37,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:06:37,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:06:37,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:06:37,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:06:37,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:06:37,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:06:37,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:06:37,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:06:37,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:06:37,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:06:37,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:06:37,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:06:37,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:06:37,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:06:37,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:06:37,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:06:37,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:06:37,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:06:37,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:06:37,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:06:37,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:06:37,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:06:37,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:06:37,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:06:37,330 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:06:37,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:06:37,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:06:37,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:06:37,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:06:37,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:06:37,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:06:37,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:06:37,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:06:37,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:06:37,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:06:37,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:06:37,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:06:37,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:06:37,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:06:37,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:06:37,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:06:37,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:06:37,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:06:37,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:06:37,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:06:37,742 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:06:37,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 10:06:37,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20bdb9/d0e84088a62d4c918ebcaa10b093d163/FLAG95691d681 [2020-12-22 10:06:38,868 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:06:38,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 10:06:38,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20bdb9/d0e84088a62d4c918ebcaa10b093d163/FLAG95691d681 [2020-12-22 10:06:39,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f20bdb9/d0e84088a62d4c918ebcaa10b093d163 [2020-12-22 10:06:39,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:06:39,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:06:39,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:06:39,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:06:39,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:06:39,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:06:39" (1/1) ... [2020-12-22 10:06:39,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22124b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:39, skipping insertion in model container [2020-12-22 10:06:39,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:06:39" (1/1) ... [2020-12-22 10:06:39,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:06:39,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:06:39,900 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c[15614,15627] [2020-12-22 10:06:39,994 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c[22661,22674] [2020-12-22 10:06:40,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:06:40,926 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:06:41,004 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c[15614,15627] [2020-12-22 10:06:41,017 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c[22661,22674] [2020-12-22 10:06:41,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:06:41,641 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:06:41,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41 WrapperNode [2020-12-22 10:06:41,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:06:41,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:06:41,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:06:41,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:06:41,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:41,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:06:42,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:06:42,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:06:42,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:06:42,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (1/1) ... [2020-12-22 10:06:42,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:06:42,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:06:42,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:06:42,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:06:43,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (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 10:06:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:06:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:06:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:06:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:06:48,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:06:48,474 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:06:48,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:06:48 BoogieIcfgContainer [2020-12-22 10:06:48,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:06:48,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:06:48,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:06:48,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:06:48,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:06:39" (1/3) ... [2020-12-22 10:06:48,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3819bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:06:48, skipping insertion in model container [2020-12-22 10:06:48,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:41" (2/3) ... [2020-12-22 10:06:48,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3819bd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:06:48, skipping insertion in model container [2020-12-22 10:06:48,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:06:48" (3/3) ... [2020-12-22 10:06:48,487 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 10:06:48,494 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:06:48,500 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:06:48,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:06:48,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:06:48,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:06:48,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:06:48,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:06:48,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:06:48,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:06:48,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:06:48,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:06:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:06:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:06:48,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:48,598 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] [2020-12-22 10:06:48,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:06:48,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:48,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805818767] [2020-12-22 10:06:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:48,972 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 10:06:48,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805818767] [2020-12-22 10:06:48,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:48,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:06:48,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515972063] [2020-12-22 10:06:48,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:06:48,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:48,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:06:48,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:06:48,997 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:06:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:49,099 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:06:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:06:49,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:06:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:49,127 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:06:49,127 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:06:49,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:06:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:06:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:06:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:06:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:06:49,241 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:06:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:49,241 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:06:49,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:06:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:06:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:06:49,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:49,244 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] [2020-12-22 10:06:49,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:06:49,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:06:49,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:49,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125929014] [2020-12-22 10:06:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:49,438 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 10:06:49,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125929014] [2020-12-22 10:06:49,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:49,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:06:49,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387499356] [2020-12-22 10:06:49,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:06:49,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:49,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:06:49,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:06:49,442 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:06:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:49,596 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:06:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:06:49,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:06:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:49,604 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:06:49,605 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:06:49,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:06:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:06:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:06:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:06:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:06:49,662 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:06:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:49,662 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:06:49,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:06:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:06:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 10:06:49,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:49,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:49,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:06:49,675 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash -67197942, now seen corresponding path program 1 times [2020-12-22 10:06:49,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:49,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622381724] [2020-12-22 10:06:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:49,804 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 10:06:49,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622381724] [2020-12-22 10:06:49,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:49,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:06:49,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737361626] [2020-12-22 10:06:49,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:49,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:49,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:49,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:49,810 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 3 states. [2020-12-22 10:06:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:56,035 INFO L93 Difference]: Finished difference Result 2365 states and 4455 transitions. [2020-12-22 10:06:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:56,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 10:06:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:56,047 INFO L225 Difference]: With dead ends: 2365 [2020-12-22 10:06:56,047 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:06:56,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:06:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:06:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:06:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:06:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2561 transitions. [2020-12-22 10:06:56,102 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2561 transitions. Word has length 63 [2020-12-22 10:06:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:56,102 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2561 transitions. [2020-12-22 10:06:56,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2561 transitions. [2020-12-22 10:06:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:56,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:56,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:06:56,105 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:06:56,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064131184] [2020-12-22 10:06:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:56,216 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 10:06:56,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064131184] [2020-12-22 10:06:56,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:56,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:56,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844565190] [2020-12-22 10:06:56,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:56,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:56,222 INFO L87 Difference]: Start difference. First operand 1612 states and 2561 transitions. Second operand 3 states. [2020-12-22 10:06:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:56,265 INFO L93 Difference]: Finished difference Result 1728 states and 2745 transitions. [2020-12-22 10:06:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:56,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:06:56,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:56,276 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:06:56,276 INFO L226 Difference]: Without dead ends: 1667 [2020-12-22 10:06:56,277 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 10:06:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-22 10:06:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2020-12-22 10:06:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-12-22 10:06:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2646 transitions. [2020-12-22 10:06:56,337 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2646 transitions. Word has length 77 [2020-12-22 10:06:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:56,338 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 2646 transitions. [2020-12-22 10:06:56,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2646 transitions. [2020-12-22 10:06:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:56,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:56,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:06:56,341 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:06:56,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050656736] [2020-12-22 10:06:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:56,447 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 10:06:56,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050656736] [2020-12-22 10:06:56,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:56,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:56,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608679232] [2020-12-22 10:06:56,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:56,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:56,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:56,450 INFO L87 Difference]: Start difference. First operand 1665 states and 2646 transitions. Second operand 3 states. [2020-12-22 10:06:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:56,504 INFO L93 Difference]: Finished difference Result 1881 states and 2990 transitions. [2020-12-22 10:06:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:56,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:06:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:56,518 INFO L225 Difference]: With dead ends: 1881 [2020-12-22 10:06:56,519 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 10:06:56,520 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 10:06:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 10:06:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2020-12-22 10:06:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-12-22 10:06:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2805 transitions. [2020-12-22 10:06:56,593 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2805 transitions. Word has length 77 [2020-12-22 10:06:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:56,593 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 2805 transitions. [2020-12-22 10:06:56,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2805 transitions. [2020-12-22 10:06:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:56,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:56,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:06:56,596 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:06:56,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894489062] [2020-12-22 10:06:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894489062] [2020-12-22 10:06:56,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:56,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:56,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974202521] [2020-12-22 10:06:56,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:56,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:56,693 INFO L87 Difference]: Start difference. First operand 1765 states and 2805 transitions. Second operand 3 states. [2020-12-22 10:06:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:56,765 INFO L93 Difference]: Finished difference Result 2169 states and 3447 transitions. [2020-12-22 10:06:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:56,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:06:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:56,779 INFO L225 Difference]: With dead ends: 2169 [2020-12-22 10:06:56,779 INFO L226 Difference]: Without dead ends: 1955 [2020-12-22 10:06:56,781 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 10:06:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-12-22 10:06:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1953. [2020-12-22 10:06:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-12-22 10:06:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3101 transitions. [2020-12-22 10:06:56,863 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3101 transitions. Word has length 77 [2020-12-22 10:06:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:56,864 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3101 transitions. [2020-12-22 10:06:56,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3101 transitions. [2020-12-22 10:06:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:56,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:56,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:06:56,868 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:06:56,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394966883] [2020-12-22 10:06:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:57,050 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 10:06:57,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394966883] [2020-12-22 10:06:57,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:57,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:57,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155106658] [2020-12-22 10:06:57,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:57,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:57,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:57,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:57,055 INFO L87 Difference]: Start difference. First operand 1953 states and 3101 transitions. Second operand 3 states. [2020-12-22 10:06:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:57,113 INFO L93 Difference]: Finished difference Result 2709 states and 4295 transitions. [2020-12-22 10:06:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:57,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:06:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:57,127 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 10:06:57,128 INFO L226 Difference]: Without dead ends: 2307 [2020-12-22 10:06:57,131 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 10:06:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2020-12-22 10:06:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2020-12-22 10:06:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 10:06:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3649 transitions. [2020-12-22 10:06:57,202 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3649 transitions. Word has length 77 [2020-12-22 10:06:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:57,203 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 3649 transitions. [2020-12-22 10:06:57,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3649 transitions. [2020-12-22 10:06:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:57,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:57,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:57,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:06:57,206 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:06:57,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:57,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658359922] [2020-12-22 10:06:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:57,312 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 10:06:57,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658359922] [2020-12-22 10:06:57,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:57,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:57,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935725031] [2020-12-22 10:06:57,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:57,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:57,315 INFO L87 Difference]: Start difference. First operand 2305 states and 3649 transitions. Second operand 3 states. [2020-12-22 10:06:57,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:57,384 INFO L93 Difference]: Finished difference Result 3717 states and 5859 transitions. [2020-12-22 10:06:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:57,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:06:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:57,401 INFO L225 Difference]: With dead ends: 3717 [2020-12-22 10:06:57,401 INFO L226 Difference]: Without dead ends: 2963 [2020-12-22 10:06:57,404 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 10:06:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-12-22 10:06:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2020-12-22 10:06:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-12-22 10:06:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4657 transitions. [2020-12-22 10:06:57,514 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4657 transitions. Word has length 77 [2020-12-22 10:06:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:57,515 INFO L481 AbstractCegarLoop]: Abstraction has 2961 states and 4657 transitions. [2020-12-22 10:06:57,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:06:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4657 transitions. [2020-12-22 10:06:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:06:57,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:57,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:57,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:06:57,516 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:06:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:57,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952380443] [2020-12-22 10:06:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:57,651 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 10:06:57,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952380443] [2020-12-22 10:06:57,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:57,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:06:57,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879724818] [2020-12-22 10:06:57,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:06:57,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:57,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:06:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:06:57,656 INFO L87 Difference]: Start difference. First operand 2961 states and 4657 transitions. Second operand 8 states. [2020-12-22 10:06:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:58,669 INFO L93 Difference]: Finished difference Result 19881 states and 30973 transitions. [2020-12-22 10:06:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:06:58,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:06:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:58,778 INFO L225 Difference]: With dead ends: 19881 [2020-12-22 10:06:58,778 INFO L226 Difference]: Without dead ends: 18471 [2020-12-22 10:06:58,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:06:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-12-22 10:06:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 4369. [2020-12-22 10:06:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-12-22 10:06:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6785 transitions. [2020-12-22 10:06:59,189 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6785 transitions. Word has length 77 [2020-12-22 10:06:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:59,189 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6785 transitions. [2020-12-22 10:06:59,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:06:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6785 transitions. [2020-12-22 10:06:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:06:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:59,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:59,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:06:59,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:06:59,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:59,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196827933] [2020-12-22 10:06:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:59,300 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 10:06:59,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196827933] [2020-12-22 10:06:59,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:59,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:59,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14832847] [2020-12-22 10:06:59,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:06:59,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:59,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:06:59,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:06:59,306 INFO L87 Difference]: Start difference. First operand 4369 states and 6785 transitions. Second operand 3 states. [2020-12-22 10:06:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:59,623 INFO L93 Difference]: Finished difference Result 9653 states and 14819 transitions. [2020-12-22 10:06:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:06:59,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:06:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:59,639 INFO L225 Difference]: With dead ends: 9653 [2020-12-22 10:06:59,639 INFO L226 Difference]: Without dead ends: 6835 [2020-12-22 10:06:59,645 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 10:06:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2020-12-22 10:07:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6769. [2020-12-22 10:07:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:07:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10273 transitions. [2020-12-22 10:07:00,107 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10273 transitions. Word has length 79 [2020-12-22 10:07:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:00,108 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10273 transitions. [2020-12-22 10:07:00,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10273 transitions. [2020-12-22 10:07:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:07:00,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:00,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:00,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:07:00,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:07:00,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:00,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148207986] [2020-12-22 10:07:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:00,415 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 10:07:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148207986] [2020-12-22 10:07:00,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:00,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:00,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894738300] [2020-12-22 10:07:00,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:00,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:00,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:00,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:00,420 INFO L87 Difference]: Start difference. First operand 6769 states and 10273 transitions. Second operand 8 states. [2020-12-22 10:07:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:01,024 INFO L93 Difference]: Finished difference Result 11989 states and 18083 transitions. [2020-12-22 10:07:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:01,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:07:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:01,039 INFO L225 Difference]: With dead ends: 11989 [2020-12-22 10:07:01,039 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 10:07:01,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:07:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 10:07:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6769. [2020-12-22 10:07:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:07:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10209 transitions. [2020-12-22 10:07:01,384 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10209 transitions. Word has length 79 [2020-12-22 10:07:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:01,384 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10209 transitions. [2020-12-22 10:07:01,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10209 transitions. [2020-12-22 10:07:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:07:01,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:01,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:01,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:07:01,386 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:07:01,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:01,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993654297] [2020-12-22 10:07:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:01,485 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 10:07:01,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993654297] [2020-12-22 10:07:01,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:01,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:07:01,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191876783] [2020-12-22 10:07:01,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:07:01,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:07:01,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:07:01,487 INFO L87 Difference]: Start difference. First operand 6769 states and 10209 transitions. Second operand 6 states. [2020-12-22 10:07:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:02,034 INFO L93 Difference]: Finished difference Result 11987 states and 17954 transitions. [2020-12-22 10:07:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:07:02,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:07:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:02,047 INFO L225 Difference]: With dead ends: 11987 [2020-12-22 10:07:02,048 INFO L226 Difference]: Without dead ends: 6769 [2020-12-22 10:07:02,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:07:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-12-22 10:07:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2020-12-22 10:07:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:07:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10145 transitions. [2020-12-22 10:07:02,406 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10145 transitions. Word has length 80 [2020-12-22 10:07:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:02,406 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10145 transitions. [2020-12-22 10:07:02,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:07:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10145 transitions. [2020-12-22 10:07:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:07:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:02,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:02,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:07:02,408 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:07:02,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:02,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263121491] [2020-12-22 10:07:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:02,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263121491] [2020-12-22 10:07:02,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:02,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:02,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117234034] [2020-12-22 10:07:02,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:02,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:02,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:02,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:02,531 INFO L87 Difference]: Start difference. First operand 6769 states and 10145 transitions. Second operand 8 states. [2020-12-22 10:07:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:03,352 INFO L93 Difference]: Finished difference Result 10675 states and 15788 transitions. [2020-12-22 10:07:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:07:03,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:07:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:03,376 INFO L225 Difference]: With dead ends: 10675 [2020-12-22 10:07:03,376 INFO L226 Difference]: Without dead ends: 10673 [2020-12-22 10:07:03,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:07:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2020-12-22 10:07:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 6961. [2020-12-22 10:07:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-12-22 10:07:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10305 transitions. [2020-12-22 10:07:03,962 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10305 transitions. Word has length 80 [2020-12-22 10:07:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:03,963 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 10305 transitions. [2020-12-22 10:07:03,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10305 transitions. [2020-12-22 10:07:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:07:03,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:03,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:03,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:07:03,965 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:03,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:03,965 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:07:03,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:03,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133127408] [2020-12-22 10:07:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:04,033 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 10:07:04,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133127408] [2020-12-22 10:07:04,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:04,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:04,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042772992] [2020-12-22 10:07:04,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:04,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:04,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:04,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:04,035 INFO L87 Difference]: Start difference. First operand 6961 states and 10305 transitions. Second operand 3 states. [2020-12-22 10:07:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:04,492 INFO L93 Difference]: Finished difference Result 12472 states and 18375 transitions. [2020-12-22 10:07:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:04,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:07:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:04,511 INFO L225 Difference]: With dead ends: 12472 [2020-12-22 10:07:04,511 INFO L226 Difference]: Without dead ends: 9461 [2020-12-22 10:07:04,519 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 10:07:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-12-22 10:07:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2020-12-22 10:07:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-12-22 10:07:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13859 transitions. [2020-12-22 10:07:05,108 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13859 transitions. Word has length 81 [2020-12-22 10:07:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:05,109 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 13859 transitions. [2020-12-22 10:07:05,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13859 transitions. [2020-12-22 10:07:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:05,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:05,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:05,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:07:05,116 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:07:05,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:05,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422469580] [2020-12-22 10:07:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:07:05,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422469580] [2020-12-22 10:07:05,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:05,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:05,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798267332] [2020-12-22 10:07:05,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:05,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:05,279 INFO L87 Difference]: Start difference. First operand 9459 states and 13859 transitions. Second operand 8 states. [2020-12-22 10:07:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:07,930 INFO L93 Difference]: Finished difference Result 58465 states and 84394 transitions. [2020-12-22 10:07:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:07,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:08,051 INFO L225 Difference]: With dead ends: 58465 [2020-12-22 10:07:08,051 INFO L226 Difference]: Without dead ends: 50559 [2020-12-22 10:07:08,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50559 states. [2020-12-22 10:07:09,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50559 to 17363. [2020-12-22 10:07:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17363 states. [2020-12-22 10:07:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17363 states to 17363 states and 25155 transitions. [2020-12-22 10:07:09,662 INFO L78 Accepts]: Start accepts. Automaton has 17363 states and 25155 transitions. Word has length 111 [2020-12-22 10:07:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:09,663 INFO L481 AbstractCegarLoop]: Abstraction has 17363 states and 25155 transitions. [2020-12-22 10:07:09,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17363 states and 25155 transitions. [2020-12-22 10:07:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:09,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:09,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:07:09,670 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:07:09,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:09,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103593612] [2020-12-22 10:07:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:07:09,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103593612] [2020-12-22 10:07:09,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:09,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:09,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647837170] [2020-12-22 10:07:09,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:09,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:09,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:09,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:09,834 INFO L87 Difference]: Start difference. First operand 17363 states and 25155 transitions. Second operand 8 states. [2020-12-22 10:07:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:13,127 INFO L93 Difference]: Finished difference Result 66369 states and 95690 transitions. [2020-12-22 10:07:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:13,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:13,340 INFO L225 Difference]: With dead ends: 66369 [2020-12-22 10:07:13,340 INFO L226 Difference]: Without dead ends: 58463 [2020-12-22 10:07:13,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:13,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58463 states. [2020-12-22 10:07:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58463 to 29235. [2020-12-22 10:07:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29235 states. [2020-12-22 10:07:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29235 states to 29235 states and 42019 transitions. [2020-12-22 10:07:15,791 INFO L78 Accepts]: Start accepts. Automaton has 29235 states and 42019 transitions. Word has length 111 [2020-12-22 10:07:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:15,792 INFO L481 AbstractCegarLoop]: Abstraction has 29235 states and 42019 transitions. [2020-12-22 10:07:15,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 29235 states and 42019 transitions. [2020-12-22 10:07:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:15,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:15,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:15,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:07:15,801 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:07:15,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:15,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799470580] [2020-12-22 10:07:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:07:15,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799470580] [2020-12-22 10:07:15,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:15,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:15,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586133135] [2020-12-22 10:07:15,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:15,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:15,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:15,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:15,936 INFO L87 Difference]: Start difference. First operand 29235 states and 42019 transitions. Second operand 8 states. [2020-12-22 10:07:20,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:20,494 INFO L93 Difference]: Finished difference Result 74273 states and 106986 transitions. [2020-12-22 10:07:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:20,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:20,638 INFO L225 Difference]: With dead ends: 74273 [2020-12-22 10:07:20,638 INFO L226 Difference]: Without dead ends: 66367 [2020-12-22 10:07:20,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66367 states. [2020-12-22 10:07:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66367 to 37139. [2020-12-22 10:07:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37139 states. [2020-12-22 10:07:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37139 states to 37139 states and 53315 transitions. [2020-12-22 10:07:23,318 INFO L78 Accepts]: Start accepts. Automaton has 37139 states and 53315 transitions. Word has length 111 [2020-12-22 10:07:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:23,318 INFO L481 AbstractCegarLoop]: Abstraction has 37139 states and 53315 transitions. [2020-12-22 10:07:23,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 37139 states and 53315 transitions. [2020-12-22 10:07:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:23,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:23,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:23,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:07:23,332 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:07:23,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:23,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499386172] [2020-12-22 10:07:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:07:23,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499386172] [2020-12-22 10:07:23,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:23,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:23,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113023407] [2020-12-22 10:07:23,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:23,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:23,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:23,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:23,478 INFO L87 Difference]: Start difference. First operand 37139 states and 53315 transitions. Second operand 8 states. [2020-12-22 10:07:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:28,533 INFO L93 Difference]: Finished difference Result 82177 states and 118282 transitions. [2020-12-22 10:07:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:28,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:28,626 INFO L225 Difference]: With dead ends: 82177 [2020-12-22 10:07:28,626 INFO L226 Difference]: Without dead ends: 74271 [2020-12-22 10:07:28,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74271 states. [2020-12-22 10:07:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74271 to 45043. [2020-12-22 10:07:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45043 states. [2020-12-22 10:07:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45043 states to 45043 states and 64611 transitions. [2020-12-22 10:07:32,240 INFO L78 Accepts]: Start accepts. Automaton has 45043 states and 64611 transitions. Word has length 111 [2020-12-22 10:07:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:32,241 INFO L481 AbstractCegarLoop]: Abstraction has 45043 states and 64611 transitions. [2020-12-22 10:07:32,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:32,241 INFO L276 IsEmpty]: Start isEmpty. Operand 45043 states and 64611 transitions. [2020-12-22 10:07:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:32,250 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:32,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:07:32,250 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:32,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:07:32,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:32,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97742640] [2020-12-22 10:07:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:07:32,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97742640] [2020-12-22 10:07:32,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:32,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:32,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117692299] [2020-12-22 10:07:32,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:32,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:32,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:32,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:32,395 INFO L87 Difference]: Start difference. First operand 45043 states and 64611 transitions. Second operand 8 states. [2020-12-22 10:07:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:38,004 INFO L93 Difference]: Finished difference Result 90081 states and 129578 transitions. [2020-12-22 10:07:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:38,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:38,099 INFO L225 Difference]: With dead ends: 90081 [2020-12-22 10:07:38,099 INFO L226 Difference]: Without dead ends: 82175 [2020-12-22 10:07:38,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82175 states. [2020-12-22 10:07:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82175 to 52947. [2020-12-22 10:07:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52947 states. [2020-12-22 10:07:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52947 states to 52947 states and 75907 transitions. [2020-12-22 10:07:42,485 INFO L78 Accepts]: Start accepts. Automaton has 52947 states and 75907 transitions. Word has length 111 [2020-12-22 10:07:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:42,485 INFO L481 AbstractCegarLoop]: Abstraction has 52947 states and 75907 transitions. [2020-12-22 10:07:42,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 52947 states and 75907 transitions. [2020-12-22 10:07:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:07:42,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:42,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:42,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:07:42,497 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:07:42,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:42,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219288312] [2020-12-22 10:07:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:42,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219288312] [2020-12-22 10:07:42,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:42,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:42,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725268168] [2020-12-22 10:07:42,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:42,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:42,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:42,579 INFO L87 Difference]: Start difference. First operand 52947 states and 75907 transitions. Second operand 3 states. [2020-12-22 10:07:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:45,432 INFO L93 Difference]: Finished difference Result 88760 states and 127532 transitions. [2020-12-22 10:07:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:45,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:07:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:45,469 INFO L225 Difference]: With dead ends: 88760 [2020-12-22 10:07:45,469 INFO L226 Difference]: Without dead ends: 37366 [2020-12-22 10:07:45,497 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 10:07:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37366 states. [2020-12-22 10:07:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37366 to 37364. [2020-12-22 10:07:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37364 states. [2020-12-22 10:07:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37364 states to 37364 states and 53673 transitions. [2020-12-22 10:07:48,577 INFO L78 Accepts]: Start accepts. Automaton has 37364 states and 53673 transitions. Word has length 113 [2020-12-22 10:07:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:48,577 INFO L481 AbstractCegarLoop]: Abstraction has 37364 states and 53673 transitions. [2020-12-22 10:07:48,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 37364 states and 53673 transitions. [2020-12-22 10:07:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:07:48,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:48,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:48,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:07:48,584 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:07:48,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:48,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623374539] [2020-12-22 10:07:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:07:48,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623374539] [2020-12-22 10:07:48,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:48,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:48,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322659375] [2020-12-22 10:07:48,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:48,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:48,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:48,718 INFO L87 Difference]: Start difference. First operand 37364 states and 53673 transitions. Second operand 8 states. [2020-12-22 10:07:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:54,094 INFO L93 Difference]: Finished difference Result 70402 states and 101296 transitions. [2020-12-22 10:07:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:54,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:07:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:54,152 INFO L225 Difference]: With dead ends: 70402 [2020-12-22 10:07:54,152 INFO L226 Difference]: Without dead ends: 64896 [2020-12-22 10:07:54,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64896 states. [2020-12-22 10:07:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64896 to 42868. [2020-12-22 10:07:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42868 states. [2020-12-22 10:07:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42868 states to 42868 states and 61545 transitions. [2020-12-22 10:07:57,797 INFO L78 Accepts]: Start accepts. Automaton has 42868 states and 61545 transitions. Word has length 113 [2020-12-22 10:07:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:57,797 INFO L481 AbstractCegarLoop]: Abstraction has 42868 states and 61545 transitions. [2020-12-22 10:07:57,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 42868 states and 61545 transitions. [2020-12-22 10:07:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:07:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:57,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:57,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:07:57,804 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:07:57,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:57,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847870284] [2020-12-22 10:07:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:58,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847870284] [2020-12-22 10:07:58,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48191617] [2020-12-22 10:07:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:07:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:58,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:07:58,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:07:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:07:58,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:07:58,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:07:58,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30600501] [2020-12-22 10:07:58,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:07:58,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:58,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:07:58,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:07:58,834 INFO L87 Difference]: Start difference. First operand 42868 states and 61545 transitions. Second operand 16 states. [2020-12-22 10:07:59,906 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:08:00,092 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:08:00,477 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:08:04,786 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:08:05,006 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:08:11,734 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-12-22 10:08:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:28,988 INFO L93 Difference]: Finished difference Result 308809 states and 435780 transitions. [2020-12-22 10:08:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:08:28,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:08:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:29,504 INFO L225 Difference]: With dead ends: 308809 [2020-12-22 10:08:29,505 INFO L226 Difference]: Without dead ends: 267527 [2020-12-22 10:08:29,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:08:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267527 states. [2020-12-22 10:08:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267527 to 134561. [2020-12-22 10:08:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134561 states. [2020-12-22 10:08:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134561 states to 134561 states and 187783 transitions. [2020-12-22 10:08:44,375 INFO L78 Accepts]: Start accepts. Automaton has 134561 states and 187783 transitions. Word has length 114 [2020-12-22 10:08:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:44,375 INFO L481 AbstractCegarLoop]: Abstraction has 134561 states and 187783 transitions. [2020-12-22 10:08:44,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:08:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 134561 states and 187783 transitions. [2020-12-22 10:08:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:08:44,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:44,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:44,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:08:44,835 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:44,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:44,836 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:08:44,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:44,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027623483] [2020-12-22 10:08:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:45,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027623483] [2020-12-22 10:08:45,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89408662] [2020-12-22 10:08:45,250 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 10:08:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:45,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:08:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:08:45,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:08:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:46,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:08:46,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:08:46,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895106432] [2020-12-22 10:08:46,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:08:46,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:46,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:08:46,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:08:46,251 INFO L87 Difference]: Start difference. First operand 134561 states and 187783 transitions. Second operand 22 states. [2020-12-22 10:08:46,390 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:46,835 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:47,247 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:08:48,770 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:08:49,011 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:08:49,313 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:08:50,000 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:50,197 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:08:50,516 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:08:52,878 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:08:53,791 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:55,277 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:55,426 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:08:55,590 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:08:56,236 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:56,817 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:08:57,909 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:08:58,299 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:08:59,245 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:08:59,759 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:00,498 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:01,358 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:01,983 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:02,879 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:09:03,019 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:09:03,194 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:09:05,912 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:06,365 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:07,034 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:07,551 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:09:15,501 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:09:15,644 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:15,851 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:16,006 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:16,223 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:16,408 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:16,661 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:09:16,979 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:09:17,147 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:17,374 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:09:17,962 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:09:18,137 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:18,370 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:09:18,553 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:18,785 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:09:19,006 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:19,290 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:09:19,431 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:19,641 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:19,828 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:20,079 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:09:20,316 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:09:20,958 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:09:21,291 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:09:21,472 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:21,759 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:09:21,916 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:22,469 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:09:22,739 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:23,034 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:23,502 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:09:23,659 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:23,871 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:24,190 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:09:24,331 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:24,512 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:39,692 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:09:40,056 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:40,244 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:40,653 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:09:40,823 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:41,051 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:09:41,290 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:42,362 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:09:42,679 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:42,865 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:43,018 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:09:43,271 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:43,489 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:09:43,904 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:44,775 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:44,944 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:45,284 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:09:46,845 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:09:47,173 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:47,631 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:47,949 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:48,808 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:51,402 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:13,547 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:14,814 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:15,242 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:15,415 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:10:16,456 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:20,206 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-22 10:10:20,381 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:20,602 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:10:20,807 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 10:10:21,069 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-22 10:10:21,295 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:21,527 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-22 10:10:21,847 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-12-22 10:10:24,244 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-22 10:10:24,575 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:24,808 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:25,213 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:10:26,105 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:26,341 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-12-22 10:10:26,572 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 10:10:26,884 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64