/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.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:02:55,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:02:55,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:02:55,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:02:55,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:02:55,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:02:55,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:02:55,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:02:55,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:02:55,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:02:55,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:02:55,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:02:55,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:02:55,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:02:55,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:02:55,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:02:55,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:02:55,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:02:55,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:02:55,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:02:55,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:02:55,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:02:55,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:02:55,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:02:55,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:02:55,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:02:55,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:02:55,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:02:55,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:02:55,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:02:55,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:02:55,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:02:55,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:02:55,477 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:02:55,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:02:55,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:02:55,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:02:55,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:02:55,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:02:55,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:02:55,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:02:55,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:02:55,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:02:55,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:02:55,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:02:55,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:02:55,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:02:55,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:02:55,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:02:55,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:02:55,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:02:55,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:02:55,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:02:55,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:02:55,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:02:55,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:02:55,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:02:55,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:02:55,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:02:55,972 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:02:55,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:02:56,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70f47759/9252ffe9f2294806b36b15a272f2c095/FLAG9422e986c [2020-12-22 10:02:57,172 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:02:57,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:02:57,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70f47759/9252ffe9f2294806b36b15a272f2c095/FLAG9422e986c [2020-12-22 10:02:57,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70f47759/9252ffe9f2294806b36b15a272f2c095 [2020-12-22 10:02:57,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:02:57,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:02:57,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:02:57,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:02:57,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:02:57,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:57" (1/1) ... [2020-12-22 10:02:57,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576efe3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:02:57, skipping insertion in model container [2020-12-22 10:02:57,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:02:57" (1/1) ... [2020-12-22 10:02:57,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:02:57,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:02:58,217 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.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[15651,15664] [2020-12-22 10:02:58,393 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.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[23156,23169] [2020-12-22 10:02:59,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:02:59,346 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:02:59,430 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.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[15651,15664] [2020-12-22 10:02:59,446 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.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c[23156,23169] [2020-12-22 10:02:59,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:03:00,076 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:03:00,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00 WrapperNode [2020-12-22 10:03:00,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:03:00,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:03:00,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:03:00,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:03:00,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:03:00,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:03:00,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:03:00,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:03:00,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:00,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:01,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (1/1) ... [2020-12-22 10:03:01,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:03:01,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:03:01,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:03:01,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:03:01,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (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 10:03:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:03:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:03:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:03:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:03:07,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:03:07,228 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:03:07,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:03:07 BoogieIcfgContainer [2020-12-22 10:03:07,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:03:07,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:03:07,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:03:07,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:03:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:02:57" (1/3) ... [2020-12-22 10:03:07,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55031762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:03:07, skipping insertion in model container [2020-12-22 10:03:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:00" (2/3) ... [2020-12-22 10:03:07,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55031762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:03:07, skipping insertion in model container [2020-12-22 10:03:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:03:07" (3/3) ... [2020-12-22 10:03:07,243 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:03:07,251 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:03:07,258 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:03:07,280 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:03:07,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:03:07,334 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:03:07,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:03:07,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:03:07,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:03:07,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:03:07,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:03:07,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:03:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:03:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:03:07,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:07,400 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 10:03:07,400 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:03:07,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:07,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970559021] [2020-12-22 10:03:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:07,749 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 10:03:07,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970559021] [2020-12-22 10:03:07,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:07,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:03:07,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39222012] [2020-12-22 10:03:07,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:03:07,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:07,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:03:07,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:03:07,776 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:03:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:07,881 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:03:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:03:07,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:03:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:07,935 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:03:07,935 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:03:07,943 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 10:03:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:03:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:03:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:03:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:03:08,047 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:03:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:08,047 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:03:08,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:03:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:03:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:03:08,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:08,051 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 10:03:08,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:03:08,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:08,052 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:03:08,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:08,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070828326] [2020-12-22 10:03:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:08,250 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 10:03:08,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070828326] [2020-12-22 10:03:08,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:08,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:03:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563270539] [2020-12-22 10:03:08,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:03:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:03:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:03:08,256 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:03:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:08,432 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:03:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:03:08,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:03:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:08,438 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:03:08,439 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:03:08,442 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 10:03:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:03:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:03:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:03:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:03:08,492 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:03:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:08,492 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:03:08,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:03:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:03:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 10:03:08,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:08,496 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] [2020-12-22 10:03:08,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:03:08,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash -573497638, now seen corresponding path program 1 times [2020-12-22 10:03:08,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397133656] [2020-12-22 10:03:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:08,829 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 10:03:08,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397133656] [2020-12-22 10:03:08,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:08,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:08,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970869710] [2020-12-22 10:03:08,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:03:08,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:08,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:03:08,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:03:08,840 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 4 states. [2020-12-22 10:03:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:19,903 INFO L93 Difference]: Finished difference Result 3116 states and 5891 transitions. [2020-12-22 10:03:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:03:19,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 10:03:19,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:19,918 INFO L225 Difference]: With dead ends: 3116 [2020-12-22 10:03:19,918 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 10:03:19,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:03:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 10:03:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-12-22 10:03:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 10:03:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3558 transitions. [2020-12-22 10:03:19,986 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3558 transitions. Word has length 67 [2020-12-22 10:03:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:19,986 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3558 transitions. [2020-12-22 10:03:19,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:03:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3558 transitions. [2020-12-22 10:03:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:19,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:19,990 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 10:03:19,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:03:19,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:03:19,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:19,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719367871] [2020-12-22 10:03:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:20,107 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 10:03:20,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719367871] [2020-12-22 10:03:20,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:20,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:20,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408036951] [2020-12-22 10:03:20,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:20,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:20,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:20,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:20,111 INFO L87 Difference]: Start difference. First operand 2363 states and 3558 transitions. Second operand 3 states. [2020-12-22 10:03:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:20,169 INFO L93 Difference]: Finished difference Result 2479 states and 3742 transitions. [2020-12-22 10:03:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:20,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:03:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:20,186 INFO L225 Difference]: With dead ends: 2479 [2020-12-22 10:03:20,186 INFO L226 Difference]: Without dead ends: 2418 [2020-12-22 10:03:20,187 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 10:03:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-12-22 10:03:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2020-12-22 10:03:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-12-22 10:03:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3643 transitions. [2020-12-22 10:03:20,253 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3643 transitions. Word has length 77 [2020-12-22 10:03:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 2416 states and 3643 transitions. [2020-12-22 10:03:20,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3643 transitions. [2020-12-22 10:03:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:20,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:20,260 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 10:03:20,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:03:20,260 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:03:20,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:20,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608000823] [2020-12-22 10:03:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:20,403 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 10:03:20,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608000823] [2020-12-22 10:03:20,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:20,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:20,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144069444] [2020-12-22 10:03:20,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:20,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:20,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:20,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:20,406 INFO L87 Difference]: Start difference. First operand 2416 states and 3643 transitions. Second operand 3 states. [2020-12-22 10:03:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:20,461 INFO L93 Difference]: Finished difference Result 2632 states and 3987 transitions. [2020-12-22 10:03:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:20,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:03:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:20,476 INFO L225 Difference]: With dead ends: 2632 [2020-12-22 10:03:20,476 INFO L226 Difference]: Without dead ends: 2518 [2020-12-22 10:03:20,478 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 10:03:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-12-22 10:03:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2020-12-22 10:03:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-12-22 10:03:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3802 transitions. [2020-12-22 10:03:20,542 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3802 transitions. Word has length 77 [2020-12-22 10:03:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:20,543 INFO L481 AbstractCegarLoop]: Abstraction has 2516 states and 3802 transitions. [2020-12-22 10:03:20,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3802 transitions. [2020-12-22 10:03:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:20,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:20,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:03:20,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:03:20,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:20,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:03:20,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:20,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34683474] [2020-12-22 10:03:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:20,611 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 10:03:20,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34683474] [2020-12-22 10:03:20,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:20,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:20,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106152096] [2020-12-22 10:03:20,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:20,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:20,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:20,614 INFO L87 Difference]: Start difference. First operand 2516 states and 3802 transitions. Second operand 3 states. [2020-12-22 10:03:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:20,725 INFO L93 Difference]: Finished difference Result 2920 states and 4444 transitions. [2020-12-22 10:03:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:20,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:03:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:20,741 INFO L225 Difference]: With dead ends: 2920 [2020-12-22 10:03:20,742 INFO L226 Difference]: Without dead ends: 2706 [2020-12-22 10:03:20,743 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 10:03:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-22 10:03:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2704. [2020-12-22 10:03:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-12-22 10:03:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4098 transitions. [2020-12-22 10:03:20,834 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4098 transitions. Word has length 77 [2020-12-22 10:03:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:20,834 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 4098 transitions. [2020-12-22 10:03:20,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4098 transitions. [2020-12-22 10:03:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:20,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:20,837 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 10:03:20,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:03:20,837 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:03:20,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:20,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787094830] [2020-12-22 10:03:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:03:20,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787094830] [2020-12-22 10:03:20,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:20,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:20,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999591214] [2020-12-22 10:03:20,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:20,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:20,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:20,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:20,952 INFO L87 Difference]: Start difference. First operand 2704 states and 4098 transitions. Second operand 3 states. [2020-12-22 10:03:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:21,027 INFO L93 Difference]: Finished difference Result 3460 states and 5292 transitions. [2020-12-22 10:03:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:21,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:03:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:21,043 INFO L225 Difference]: With dead ends: 3460 [2020-12-22 10:03:21,044 INFO L226 Difference]: Without dead ends: 3058 [2020-12-22 10:03:21,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-12-22 10:03:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2020-12-22 10:03:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3056 states. [2020-12-22 10:03:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4646 transitions. [2020-12-22 10:03:21,152 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4646 transitions. Word has length 77 [2020-12-22 10:03:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:21,154 INFO L481 AbstractCegarLoop]: Abstraction has 3056 states and 4646 transitions. [2020-12-22 10:03:21,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4646 transitions. [2020-12-22 10:03:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:21,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:21,163 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 10:03:21,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:03:21,163 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:03:21,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:21,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161582119] [2020-12-22 10:03:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:21,287 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 10:03:21,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161582119] [2020-12-22 10:03:21,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:21,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:21,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811008394] [2020-12-22 10:03:21,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:21,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:21,290 INFO L87 Difference]: Start difference. First operand 3056 states and 4646 transitions. Second operand 3 states. [2020-12-22 10:03:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:21,385 INFO L93 Difference]: Finished difference Result 4468 states and 6856 transitions. [2020-12-22 10:03:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:21,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:03:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:21,404 INFO L225 Difference]: With dead ends: 4468 [2020-12-22 10:03:21,404 INFO L226 Difference]: Without dead ends: 3714 [2020-12-22 10:03:21,408 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 10:03:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-12-22 10:03:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2020-12-22 10:03:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-12-22 10:03:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5654 transitions. [2020-12-22 10:03:21,564 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5654 transitions. Word has length 77 [2020-12-22 10:03:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:21,564 INFO L481 AbstractCegarLoop]: Abstraction has 3712 states and 5654 transitions. [2020-12-22 10:03:21,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5654 transitions. [2020-12-22 10:03:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:03:21,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:21,566 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 10:03:21,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:03:21,566 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:03:21,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:21,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905520247] [2020-12-22 10:03:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:21,707 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 10:03:21,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905520247] [2020-12-22 10:03:21,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:21,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:21,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240210416] [2020-12-22 10:03:21,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:21,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:21,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:21,711 INFO L87 Difference]: Start difference. First operand 3712 states and 5654 transitions. Second operand 8 states. [2020-12-22 10:03:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:22,957 INFO L93 Difference]: Finished difference Result 20632 states and 31970 transitions. [2020-12-22 10:03:22,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:03:22,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:03:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:23,047 INFO L225 Difference]: With dead ends: 20632 [2020-12-22 10:03:23,048 INFO L226 Difference]: Without dead ends: 19222 [2020-12-22 10:03:23,059 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 10:03:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19222 states. [2020-12-22 10:03:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19222 to 5120. [2020-12-22 10:03:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-22 10:03:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7782 transitions. [2020-12-22 10:03:23,539 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7782 transitions. Word has length 77 [2020-12-22 10:03:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:23,540 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 7782 transitions. [2020-12-22 10:03:23,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7782 transitions. [2020-12-22 10:03:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:03:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:23,541 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 10:03:23,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:03:23,542 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:03:23,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:23,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576183778] [2020-12-22 10:03:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:23,660 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 10:03:23,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576183778] [2020-12-22 10:03:23,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:23,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:23,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938765629] [2020-12-22 10:03:23,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:23,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:23,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:23,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:23,666 INFO L87 Difference]: Start difference. First operand 5120 states and 7782 transitions. Second operand 3 states. [2020-12-22 10:03:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:24,048 INFO L93 Difference]: Finished difference Result 10404 states and 15816 transitions. [2020-12-22 10:03:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:24,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:03:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:24,067 INFO L225 Difference]: With dead ends: 10404 [2020-12-22 10:03:24,067 INFO L226 Difference]: Without dead ends: 7586 [2020-12-22 10:03:24,074 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 10:03:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-12-22 10:03:24,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7520. [2020-12-22 10:03:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:03:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11270 transitions. [2020-12-22 10:03:24,639 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11270 transitions. Word has length 79 [2020-12-22 10:03:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:24,640 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11270 transitions. [2020-12-22 10:03:24,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11270 transitions. [2020-12-22 10:03:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:03:24,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:24,641 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 10:03:24,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:03:24,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:03:24,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:24,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145143729] [2020-12-22 10:03:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:24,931 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 10:03:24,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145143729] [2020-12-22 10:03:24,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:24,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:24,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818923423] [2020-12-22 10:03:24,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:24,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:24,934 INFO L87 Difference]: Start difference. First operand 7520 states and 11270 transitions. Second operand 8 states. [2020-12-22 10:03:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:25,630 INFO L93 Difference]: Finished difference Result 12740 states and 19080 transitions. [2020-12-22 10:03:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:25,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:03:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:25,649 INFO L225 Difference]: With dead ends: 12740 [2020-12-22 10:03:25,649 INFO L226 Difference]: Without dead ends: 7522 [2020-12-22 10:03:25,660 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 10:03:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2020-12-22 10:03:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 7520. [2020-12-22 10:03:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:03:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11206 transitions. [2020-12-22 10:03:26,073 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11206 transitions. Word has length 79 [2020-12-22 10:03:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:26,073 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11206 transitions. [2020-12-22 10:03:26,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11206 transitions. [2020-12-22 10:03:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:03:26,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:26,075 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 10:03:26,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:03:26,075 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:26,076 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:03:26,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:26,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020100054] [2020-12-22 10:03:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:26,189 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 10:03:26,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020100054] [2020-12-22 10:03:26,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:26,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:03:26,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974866786] [2020-12-22 10:03:26,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:03:26,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:03:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:03:26,192 INFO L87 Difference]: Start difference. First operand 7520 states and 11206 transitions. Second operand 6 states. [2020-12-22 10:03:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:26,812 INFO L93 Difference]: Finished difference Result 12738 states and 18951 transitions. [2020-12-22 10:03:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:03:26,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:03:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:26,834 INFO L225 Difference]: With dead ends: 12738 [2020-12-22 10:03:26,834 INFO L226 Difference]: Without dead ends: 7520 [2020-12-22 10:03:26,843 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 10:03:26,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-12-22 10:03:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-12-22 10:03:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:03:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11142 transitions. [2020-12-22 10:03:27,279 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11142 transitions. Word has length 80 [2020-12-22 10:03:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:27,279 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11142 transitions. [2020-12-22 10:03:27,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:03:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11142 transitions. [2020-12-22 10:03:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:03:27,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:27,281 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 10:03:27,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:03:27,281 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:03:27,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:27,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426353650] [2020-12-22 10:03:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:27,420 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 10:03:27,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426353650] [2020-12-22 10:03:27,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:27,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:27,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815311660] [2020-12-22 10:03:27,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:27,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:27,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:27,429 INFO L87 Difference]: Start difference. First operand 7520 states and 11142 transitions. Second operand 8 states. [2020-12-22 10:03:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:28,335 INFO L93 Difference]: Finished difference Result 11426 states and 16785 transitions. [2020-12-22 10:03:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:03:28,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:03:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:28,363 INFO L225 Difference]: With dead ends: 11426 [2020-12-22 10:03:28,363 INFO L226 Difference]: Without dead ends: 11424 [2020-12-22 10:03:28,369 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 10:03:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2020-12-22 10:03:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7712. [2020-12-22 10:03:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2020-12-22 10:03:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11302 transitions. [2020-12-22 10:03:28,976 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11302 transitions. Word has length 80 [2020-12-22 10:03:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:28,976 INFO L481 AbstractCegarLoop]: Abstraction has 7712 states and 11302 transitions. [2020-12-22 10:03:28,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11302 transitions. [2020-12-22 10:03:28,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:03:28,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:28,978 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 10:03:28,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:03:28,978 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:28,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:28,979 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:03:28,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:28,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729831215] [2020-12-22 10:03:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:29,039 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 10:03:29,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729831215] [2020-12-22 10:03:29,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:29,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:03:29,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595520462] [2020-12-22 10:03:29,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:03:29,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:03:29,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:03:29,042 INFO L87 Difference]: Start difference. First operand 7712 states and 11302 transitions. Second operand 3 states. [2020-12-22 10:03:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:29,731 INFO L93 Difference]: Finished difference Result 13223 states and 19372 transitions. [2020-12-22 10:03:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:03:29,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:03:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:29,757 INFO L225 Difference]: With dead ends: 13223 [2020-12-22 10:03:29,757 INFO L226 Difference]: Without dead ends: 10212 [2020-12-22 10:03:29,766 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 10:03:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2020-12-22 10:03:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 10210. [2020-12-22 10:03:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10210 states. [2020-12-22 10:03:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14856 transitions. [2020-12-22 10:03:30,853 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14856 transitions. Word has length 81 [2020-12-22 10:03:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:30,853 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states and 14856 transitions. [2020-12-22 10:03:30,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:03:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14856 transitions. [2020-12-22 10:03:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:30,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:30,861 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 10:03:30,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:03:30,862 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:30,862 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:03:30,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:30,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459632232] [2020-12-22 10:03:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:31,038 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 10:03:31,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459632232] [2020-12-22 10:03:31,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:31,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:31,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862777246] [2020-12-22 10:03:31,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:31,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:31,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:31,042 INFO L87 Difference]: Start difference. First operand 10210 states and 14856 transitions. Second operand 8 states. [2020-12-22 10:03:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:34,653 INFO L93 Difference]: Finished difference Result 59216 states and 85391 transitions. [2020-12-22 10:03:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:34,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:34,804 INFO L225 Difference]: With dead ends: 59216 [2020-12-22 10:03:34,805 INFO L226 Difference]: Without dead ends: 51310 [2020-12-22 10:03:34,830 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 10:03:34,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2020-12-22 10:03:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2020-12-22 10:03:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2020-12-22 10:03:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26152 transitions. [2020-12-22 10:03:36,375 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26152 transitions. Word has length 111 [2020-12-22 10:03:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:36,375 INFO L481 AbstractCegarLoop]: Abstraction has 18114 states and 26152 transitions. [2020-12-22 10:03:36,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26152 transitions. [2020-12-22 10:03:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:36,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:36,383 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 10:03:36,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:03:36,383 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:36,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:03:36,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:36,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478100471] [2020-12-22 10:03:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:36,533 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 10:03:36,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478100471] [2020-12-22 10:03:36,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:36,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:36,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346896794] [2020-12-22 10:03:36,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:36,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:36,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:36,535 INFO L87 Difference]: Start difference. First operand 18114 states and 26152 transitions. Second operand 8 states. [2020-12-22 10:03:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:40,245 INFO L93 Difference]: Finished difference Result 67120 states and 96687 transitions. [2020-12-22 10:03:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:40,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:40,349 INFO L225 Difference]: With dead ends: 67120 [2020-12-22 10:03:40,349 INFO L226 Difference]: Without dead ends: 59214 [2020-12-22 10:03:40,371 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 10:03:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2020-12-22 10:03:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2020-12-22 10:03:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29986 states. [2020-12-22 10:03:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43016 transitions. [2020-12-22 10:03:42,591 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43016 transitions. Word has length 111 [2020-12-22 10:03:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:42,592 INFO L481 AbstractCegarLoop]: Abstraction has 29986 states and 43016 transitions. [2020-12-22 10:03:42,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43016 transitions. [2020-12-22 10:03:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:42,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:42,599 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 10:03:42,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:03:42,600 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:03:42,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:42,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849275448] [2020-12-22 10:03:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:42,746 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 10:03:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849275448] [2020-12-22 10:03:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:42,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094227222] [2020-12-22 10:03:42,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:42,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:42,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:42,749 INFO L87 Difference]: Start difference. First operand 29986 states and 43016 transitions. Second operand 8 states. [2020-12-22 10:03:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:47,354 INFO L93 Difference]: Finished difference Result 75024 states and 107983 transitions. [2020-12-22 10:03:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:47,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:47,493 INFO L225 Difference]: With dead ends: 75024 [2020-12-22 10:03:47,494 INFO L226 Difference]: Without dead ends: 67118 [2020-12-22 10:03:47,522 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 10:03:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2020-12-22 10:03:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2020-12-22 10:03:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37890 states. [2020-12-22 10:03:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54312 transitions. [2020-12-22 10:03:50,833 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54312 transitions. Word has length 111 [2020-12-22 10:03:50,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:03:50,834 INFO L481 AbstractCegarLoop]: Abstraction has 37890 states and 54312 transitions. [2020-12-22 10:03:50,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:03:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54312 transitions. [2020-12-22 10:03:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:03:50,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:03:50,844 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 10:03:50,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:03:50,845 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:03:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:03:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:03:50,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:03:50,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804577053] [2020-12-22 10:03:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:03:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:03:50,989 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 10:03:50,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804577053] [2020-12-22 10:03:50,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:03:50,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:03:50,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505258980] [2020-12-22 10:03:50,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:03:50,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:03:50,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:03:50,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:03:50,993 INFO L87 Difference]: Start difference. First operand 37890 states and 54312 transitions. Second operand 8 states. [2020-12-22 10:03:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:03:56,308 INFO L93 Difference]: Finished difference Result 82928 states and 119279 transitions. [2020-12-22 10:03:56,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:03:56,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:03:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:03:56,431 INFO L225 Difference]: With dead ends: 82928 [2020-12-22 10:03:56,431 INFO L226 Difference]: Without dead ends: 75022 [2020-12-22 10:03:56,463 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 10:03:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2020-12-22 10:04:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2020-12-22 10:04:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45794 states. [2020-12-22 10:04:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65608 transitions. [2020-12-22 10:04:00,430 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65608 transitions. Word has length 111 [2020-12-22 10:04:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:00,430 INFO L481 AbstractCegarLoop]: Abstraction has 45794 states and 65608 transitions. [2020-12-22 10:04:00,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65608 transitions. [2020-12-22 10:04:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:04:00,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:00,441 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 10:04:00,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:04:00,441 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:04:00,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:00,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450871920] [2020-12-22 10:04:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:00,696 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 10:04:00,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450871920] [2020-12-22 10:04:00,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:00,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:04:00,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374640532] [2020-12-22 10:04:00,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:04:00,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:00,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:04:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:04:00,699 INFO L87 Difference]: Start difference. First operand 45794 states and 65608 transitions. Second operand 8 states. [2020-12-22 10:04:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:06,777 INFO L93 Difference]: Finished difference Result 90832 states and 130575 transitions. [2020-12-22 10:04:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:04:06,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:04:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:06,877 INFO L225 Difference]: With dead ends: 90832 [2020-12-22 10:04:06,877 INFO L226 Difference]: Without dead ends: 82926 [2020-12-22 10:04:06,902 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 10:04:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2020-12-22 10:04:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2020-12-22 10:04:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53698 states. [2020-12-22 10:04:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 76904 transitions. [2020-12-22 10:04:11,604 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 76904 transitions. Word has length 111 [2020-12-22 10:04:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:11,604 INFO L481 AbstractCegarLoop]: Abstraction has 53698 states and 76904 transitions. [2020-12-22 10:04:11,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 76904 transitions. [2020-12-22 10:04:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:04:11,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:11,616 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 10:04:11,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:04:11,616 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:11,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:11,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:04:11,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:11,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270945148] [2020-12-22 10:04:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:11,693 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 10:04:11,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270945148] [2020-12-22 10:04:11,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:11,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:04:11,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125127221] [2020-12-22 10:04:11,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:04:11,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:04:11,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:04:11,695 INFO L87 Difference]: Start difference. First operand 53698 states and 76904 transitions. Second operand 3 states. [2020-12-22 10:04:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:15,428 INFO L93 Difference]: Finished difference Result 89511 states and 128529 transitions. [2020-12-22 10:04:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:04:15,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:04:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:15,466 INFO L225 Difference]: With dead ends: 89511 [2020-12-22 10:04:15,466 INFO L226 Difference]: Without dead ends: 38117 [2020-12-22 10:04:15,488 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 10:04:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2020-12-22 10:04:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 38115. [2020-12-22 10:04:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38115 states. [2020-12-22 10:04:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38115 states to 38115 states and 54670 transitions. [2020-12-22 10:04:18,741 INFO L78 Accepts]: Start accepts. Automaton has 38115 states and 54670 transitions. Word has length 113 [2020-12-22 10:04:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:18,741 INFO L481 AbstractCegarLoop]: Abstraction has 38115 states and 54670 transitions. [2020-12-22 10:04:18,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:04:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 38115 states and 54670 transitions. [2020-12-22 10:04:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:04:18,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:18,749 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 10:04:18,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:04:18,749 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:04:18,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:18,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619798442] [2020-12-22 10:04:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:18,887 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 10:04:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619798442] [2020-12-22 10:04:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:04:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:04:18,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886494060] [2020-12-22 10:04:18,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:04:18,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:04:18,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:04:18,890 INFO L87 Difference]: Start difference. First operand 38115 states and 54670 transitions. Second operand 8 states. [2020-12-22 10:04:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:04:24,592 INFO L93 Difference]: Finished difference Result 71153 states and 102293 transitions. [2020-12-22 10:04:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:04:24,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:04:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:04:24,659 INFO L225 Difference]: With dead ends: 71153 [2020-12-22 10:04:24,659 INFO L226 Difference]: Without dead ends: 65647 [2020-12-22 10:04:24,673 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 10:04:24,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2020-12-22 10:04:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 43619. [2020-12-22 10:04:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43619 states. [2020-12-22 10:04:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43619 states to 43619 states and 62542 transitions. [2020-12-22 10:04:28,803 INFO L78 Accepts]: Start accepts. Automaton has 43619 states and 62542 transitions. Word has length 113 [2020-12-22 10:04:28,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:04:28,804 INFO L481 AbstractCegarLoop]: Abstraction has 43619 states and 62542 transitions. [2020-12-22 10:04:28,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:04:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 43619 states and 62542 transitions. [2020-12-22 10:04:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:04:28,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:04:28,811 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 10:04:28,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:04:28,811 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:04:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:04:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:04:28,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:04:28,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248340167] [2020-12-22 10:04:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:04:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:29,204 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 10:04:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248340167] [2020-12-22 10:04:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575860314] [2020-12-22 10:04:29,205 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 10:04:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:04:29,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:04:29,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:04:29,918 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 10:04:29,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:04:29,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:04:29,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959788429] [2020-12-22 10:04:29,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:04:29,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:04:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:04:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:04:29,921 INFO L87 Difference]: Start difference. First operand 43619 states and 62542 transitions. Second operand 16 states. [2020-12-22 10:04:30,950 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:04:31,514 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:04:35,795 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:04:36,015 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:05:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:05:01,277 INFO L93 Difference]: Finished difference Result 309560 states and 436777 transitions. [2020-12-22 10:05:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:05:01,281 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:05:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:05:02,114 INFO L225 Difference]: With dead ends: 309560 [2020-12-22 10:05:02,114 INFO L226 Difference]: Without dead ends: 268278 [2020-12-22 10:05:02,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:05:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268278 states. [2020-12-22 10:05:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268278 to 135312. [2020-12-22 10:05:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135312 states. [2020-12-22 10:05:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135312 states to 135312 states and 188780 transitions. [2020-12-22 10:05:18,455 INFO L78 Accepts]: Start accepts. Automaton has 135312 states and 188780 transitions. Word has length 114 [2020-12-22 10:05:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:05:18,455 INFO L481 AbstractCegarLoop]: Abstraction has 135312 states and 188780 transitions. [2020-12-22 10:05:18,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:05:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 135312 states and 188780 transitions. [2020-12-22 10:05:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:05:18,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:05:18,479 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 10:05:18,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:05:18,693 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:05:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:05:18,695 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:05:18,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:05:18,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154334131] [2020-12-22 10:05:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:05:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:19,273 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 10:05:19,430 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 10:05:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154334131] [2020-12-22 10:05:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918711350] [2020-12-22 10:05:19,431 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 10:05:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:05:19,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:05:19,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:05:19,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:05:20,393 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 10:05:20,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:05:20,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:05:20,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820383557] [2020-12-22 10:05:20,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:05:20,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:05:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:05:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:05:20,395 INFO L87 Difference]: Start difference. First operand 135312 states and 188780 transitions. Second operand 22 states. [2020-12-22 10:05:20,992 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:21,427 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:05:23,089 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:23,329 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:05:23,632 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:05:24,353 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:24,554 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:05:24,875 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:05:27,264 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:28,154 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:28,422 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:29,966 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:05:31,147 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:32,204 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:05:32,579 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:05:34,088 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:34,568 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:34,830 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:05:36,179 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:37,066 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:05:37,365 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:05:39,981 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:40,443 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:41,118 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:41,628 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:05:49,993 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:05:50,329 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:50,676 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:50,849 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:51,092 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:05:51,398 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:05:51,559 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:51,784 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:05:52,317 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:05:52,487 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:52,697 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:05:52,861 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:53,079 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:05:53,294 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:05:53,583 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:05:53,719 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:53,928 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:05:54,104 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:54,338 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:05:55,602 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:05:55,770 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:05:56,045 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:05:56,206 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:05:56,750 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:05:57,320 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:05:57,637 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:05:57,788 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:05:57,991 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:05:58,295 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:05:58,582 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:06:14,126 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:06:14,471 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:06:14,654 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:06:15,051 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:06:15,214 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:06:15,423 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:06:15,647 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:06:16,868 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:06:17,162 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:06:17,336 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:06:17,710 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:06:17,904 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:06:18,289 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:06:18,953 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:06:19,116 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:06:19,448 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:06:21,341 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:06:21,674 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:06:22,131 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:06:22,435 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:06:23,076 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:06:25,906 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45