/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:06:44,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:06:44,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:06:44,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:06:44,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:06:44,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:06:44,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:06:44,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:06:44,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:06:44,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:06:44,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:06:44,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:06:44,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:06:44,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:06:44,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:06:44,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:06:44,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:06:44,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:06:44,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:06:44,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:06:44,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:06:44,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:06:44,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:06:44,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:06:44,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:06:44,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:06:44,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:06:44,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:06:44,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:06:44,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:06:44,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:06:44,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:06:44,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:06:44,537 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:06:44,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:06:44,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:06:44,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:06:44,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:06:44,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:06:44,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:06:44,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:06:44,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:06:44,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:06:44,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:06:44,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:06:44,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:06:44,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:06:44,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:06:44,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:06:44,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:06:44,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:06:44,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:06:44,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:06:44,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:06:44,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:06:45,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:06:45,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:06:45,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:06:45,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:06:45,047 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:06:45,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:06:45,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b3fbd20/dde510b677d1428295efd13bd685d568/FLAG2a1df1b74 [2020-12-22 10:06:46,291 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:06:46,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:06:46,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b3fbd20/dde510b677d1428295efd13bd685d568/FLAG2a1df1b74 [2020-12-22 10:06:46,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b3fbd20/dde510b677d1428295efd13bd685d568 [2020-12-22 10:06:46,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:06:46,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:06:46,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:06:46,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:06:46,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:06:46,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:06:46" (1/1) ... [2020-12-22 10:06:46,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cffeef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:46, skipping insertion in model container [2020-12-22 10:06:46,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:06:46" (1/1) ... [2020-12-22 10:06:46,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:06:46,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:06:47,584 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[15614,15627] [2020-12-22 10:06:47,681 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[22432,22445] [2020-12-22 10:06:48,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:06:48,702 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:06:48,797 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[15614,15627] [2020-12-22 10:06:48,867 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[22432,22445] [2020-12-22 10:06:49,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:06:49,570 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:06:49,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49 WrapperNode [2020-12-22 10:06:49,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:06:49,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:06:49,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:06:49,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:06:49,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:49,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:06:50,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:06:50,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:06:50,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:06:50,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... [2020-12-22 10:06:50,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:06:50,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:06:50,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:06:50,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:06:50,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:06:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:06:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:06:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:06:50,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:06:56,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:06:56,590 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:06:56,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:06:56 BoogieIcfgContainer [2020-12-22 10:06:56,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:06:56,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:06:56,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:06:56,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:06:56,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:06:46" (1/3) ... [2020-12-22 10:06:56,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f4f098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:06:56, skipping insertion in model container [2020-12-22 10:06:56,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:06:49" (2/3) ... [2020-12-22 10:06:56,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f4f098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:06:56, skipping insertion in model container [2020-12-22 10:06:56,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:06:56" (3/3) ... [2020-12-22 10:06:56,603 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 10:06:56,611 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:06:56,618 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:06:56,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:06:56,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:06:56,673 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:06:56,673 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:06:56,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:06:56,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:06:56,674 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:06:56,674 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:06:56,674 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:06:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:06:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:06:56,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:56,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:56,721 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:56,728 INFO L82 PathProgramCache]: Analyzing trace with hash -321533933, now seen corresponding path program 1 times [2020-12-22 10:06:56,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:56,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447023698] [2020-12-22 10:06:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:57,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447023698] [2020-12-22 10:06:57,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:57,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:06:57,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969457136] [2020-12-22 10:06:57,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:06:57,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:06:57,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:06:57,035 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 2 states. [2020-12-22 10:06:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:57,132 INFO L93 Difference]: Finished difference Result 1806 states and 3420 transitions. [2020-12-22 10:06:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:06:57,138 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2020-12-22 10:06:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:57,193 INFO L225 Difference]: With dead ends: 1806 [2020-12-22 10:06:57,193 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:06:57,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:06:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:06:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:06:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:06:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1622 transitions. [2020-12-22 10:06:57,345 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1622 transitions. Word has length 38 [2020-12-22 10:06:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:57,345 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1622 transitions. [2020-12-22 10:06:57,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:06:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1622 transitions. [2020-12-22 10:06:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:06:57,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:57,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:57,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:06:57,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:06:57,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:57,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938960724] [2020-12-22 10:06:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:57,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938960724] [2020-12-22 10:06:57,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:57,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:06:57,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261525840] [2020-12-22 10:06:57,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:06:57,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:06:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:06:57,603 INFO L87 Difference]: Start difference. First operand 861 states and 1622 transitions. Second operand 5 states. [2020-12-22 10:06:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:06:57,768 INFO L93 Difference]: Finished difference Result 926 states and 1723 transitions. [2020-12-22 10:06:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:06:57,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:06:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:06:57,775 INFO L225 Difference]: With dead ends: 926 [2020-12-22 10:06:57,775 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 10:06:57,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:06:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 10:06:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2020-12-22 10:06:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 10:06:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1582 transitions. [2020-12-22 10:06:57,807 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1582 transitions. Word has length 38 [2020-12-22 10:06:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:06:57,808 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1582 transitions. [2020-12-22 10:06:57,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:06:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1582 transitions. [2020-12-22 10:06:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 10:06:57,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:06:57,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:06:57,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:06:57,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:06:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:06:57,820 INFO L82 PathProgramCache]: Analyzing trace with hash -196717918, now seen corresponding path program 1 times [2020-12-22 10:06:57,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:06:57,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405890136] [2020-12-22 10:06:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:06:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:06:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:06:58,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405890136] [2020-12-22 10:06:58,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:06:58,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:06:58,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133505997] [2020-12-22 10:06:58,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:06:58,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:06:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:06:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:06:58,086 INFO L87 Difference]: Start difference. First operand 861 states and 1582 transitions. Second operand 4 states. [2020-12-22 10:07:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:09,237 INFO L93 Difference]: Finished difference Result 3116 states and 5891 transitions. [2020-12-22 10:07:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:07:09,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 10:07:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:09,254 INFO L225 Difference]: With dead ends: 3116 [2020-12-22 10:07:09,255 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 10:07:09,257 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 10:07:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 10:07:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-12-22 10:07:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 10:07:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3558 transitions. [2020-12-22 10:07:09,323 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3558 transitions. Word has length 61 [2020-12-22 10:07:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:09,323 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 3558 transitions. [2020-12-22 10:07:09,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:07:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3558 transitions. [2020-12-22 10:07:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:09,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:09,325 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 10:07:09,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:07:09,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:09,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:07:09,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:09,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567337128] [2020-12-22 10:07:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:09,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567337128] [2020-12-22 10:07:09,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:09,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:09,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145382591] [2020-12-22 10:07:09,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:09,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:09,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:09,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,429 INFO L87 Difference]: Start difference. First operand 2363 states and 3558 transitions. Second operand 3 states. [2020-12-22 10:07:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:09,476 INFO L93 Difference]: Finished difference Result 2479 states and 3742 transitions. [2020-12-22 10:07:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:09,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:07:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:09,492 INFO L225 Difference]: With dead ends: 2479 [2020-12-22 10:07:09,492 INFO L226 Difference]: Without dead ends: 2418 [2020-12-22 10:07:09,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-12-22 10:07:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2020-12-22 10:07:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-12-22 10:07:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3643 transitions. [2020-12-22 10:07:09,554 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3643 transitions. Word has length 77 [2020-12-22 10:07:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:09,555 INFO L481 AbstractCegarLoop]: Abstraction has 2416 states and 3643 transitions. [2020-12-22 10:07:09,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3643 transitions. [2020-12-22 10:07:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:09,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:09,557 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 10:07:09,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:07:09,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:07:09,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:09,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810586335] [2020-12-22 10:07:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:09,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810586335] [2020-12-22 10:07:09,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:09,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:09,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917104144] [2020-12-22 10:07:09,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:09,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,641 INFO L87 Difference]: Start difference. First operand 2416 states and 3643 transitions. Second operand 3 states. [2020-12-22 10:07:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:09,695 INFO L93 Difference]: Finished difference Result 2632 states and 3987 transitions. [2020-12-22 10:07:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:09,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:07:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:09,710 INFO L225 Difference]: With dead ends: 2632 [2020-12-22 10:07:09,711 INFO L226 Difference]: Without dead ends: 2518 [2020-12-22 10:07:09,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-12-22 10:07:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2020-12-22 10:07:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-12-22 10:07:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3802 transitions. [2020-12-22 10:07:09,778 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3802 transitions. Word has length 77 [2020-12-22 10:07:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:09,778 INFO L481 AbstractCegarLoop]: Abstraction has 2516 states and 3802 transitions. [2020-12-22 10:07:09,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3802 transitions. [2020-12-22 10:07:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:09,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:09,780 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 10:07:09,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:07:09,781 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:07:09,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:09,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206021251] [2020-12-22 10:07:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:09,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206021251] [2020-12-22 10:07:09,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:09,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:09,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645216109] [2020-12-22 10:07:09,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:09,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,856 INFO L87 Difference]: Start difference. First operand 2516 states and 3802 transitions. Second operand 3 states. [2020-12-22 10:07:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:09,916 INFO L93 Difference]: Finished difference Result 2920 states and 4444 transitions. [2020-12-22 10:07:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:09,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:07:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:09,932 INFO L225 Difference]: With dead ends: 2920 [2020-12-22 10:07:09,933 INFO L226 Difference]: Without dead ends: 2706 [2020-12-22 10:07:09,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-22 10:07:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2704. [2020-12-22 10:07:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-12-22 10:07:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4098 transitions. [2020-12-22 10:07:10,011 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4098 transitions. Word has length 77 [2020-12-22 10:07:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:10,012 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 4098 transitions. [2020-12-22 10:07:10,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4098 transitions. [2020-12-22 10:07:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:10,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:10,013 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 10:07:10,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:07:10,014 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:10,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:07:10,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:10,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077056869] [2020-12-22 10:07:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:10,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077056869] [2020-12-22 10:07:10,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:10,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:10,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730572179] [2020-12-22 10:07:10,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:10,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:10,085 INFO L87 Difference]: Start difference. First operand 2704 states and 4098 transitions. Second operand 3 states. [2020-12-22 10:07:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:10,156 INFO L93 Difference]: Finished difference Result 3460 states and 5292 transitions. [2020-12-22 10:07:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:10,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:07:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:10,174 INFO L225 Difference]: With dead ends: 3460 [2020-12-22 10:07:10,174 INFO L226 Difference]: Without dead ends: 3058 [2020-12-22 10:07:10,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2020-12-22 10:07:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 3056. [2020-12-22 10:07:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3056 states. [2020-12-22 10:07:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4646 transitions. [2020-12-22 10:07:10,276 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4646 transitions. Word has length 77 [2020-12-22 10:07:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:10,277 INFO L481 AbstractCegarLoop]: Abstraction has 3056 states and 4646 transitions. [2020-12-22 10:07:10,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4646 transitions. [2020-12-22 10:07:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:10,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:10,278 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 10:07:10,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:07:10,278 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:07:10,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:10,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040520105] [2020-12-22 10:07:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:10,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040520105] [2020-12-22 10:07:10,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:10,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:10,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912826754] [2020-12-22 10:07:10,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:10,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:10,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:10,361 INFO L87 Difference]: Start difference. First operand 3056 states and 4646 transitions. Second operand 3 states. [2020-12-22 10:07:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:10,480 INFO L93 Difference]: Finished difference Result 4468 states and 6856 transitions. [2020-12-22 10:07:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:10,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:07:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:10,505 INFO L225 Difference]: With dead ends: 4468 [2020-12-22 10:07:10,505 INFO L226 Difference]: Without dead ends: 3714 [2020-12-22 10:07:10,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-12-22 10:07:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3712. [2020-12-22 10:07:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3712 states. [2020-12-22 10:07:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5654 transitions. [2020-12-22 10:07:10,657 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5654 transitions. Word has length 77 [2020-12-22 10:07:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:10,658 INFO L481 AbstractCegarLoop]: Abstraction has 3712 states and 5654 transitions. [2020-12-22 10:07:10,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5654 transitions. [2020-12-22 10:07:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:07:10,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:10,659 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 10:07:10,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:07:10,659 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:10,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:07:10,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:10,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493883597] [2020-12-22 10:07:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:10,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493883597] [2020-12-22 10:07:10,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:10,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:10,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797777370] [2020-12-22 10:07:10,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:10,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:10,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:10,864 INFO L87 Difference]: Start difference. First operand 3712 states and 5654 transitions. Second operand 8 states. [2020-12-22 10:07:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:12,001 INFO L93 Difference]: Finished difference Result 20632 states and 31970 transitions. [2020-12-22 10:07:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:07:12,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:07:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:12,073 INFO L225 Difference]: With dead ends: 20632 [2020-12-22 10:07:12,074 INFO L226 Difference]: Without dead ends: 19222 [2020-12-22 10:07:12,084 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 10:07:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19222 states. [2020-12-22 10:07:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19222 to 5120. [2020-12-22 10:07:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5120 states. [2020-12-22 10:07:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 7782 transitions. [2020-12-22 10:07:12,522 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 7782 transitions. Word has length 77 [2020-12-22 10:07:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:12,523 INFO L481 AbstractCegarLoop]: Abstraction has 5120 states and 7782 transitions. [2020-12-22 10:07:12,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 7782 transitions. [2020-12-22 10:07:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:07:12,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:12,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:12,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:07:12,525 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:07:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:12,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301978730] [2020-12-22 10:07:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:12,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301978730] [2020-12-22 10:07:12,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:12,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:12,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845237784] [2020-12-22 10:07:12,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:12,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:12,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:12,612 INFO L87 Difference]: Start difference. First operand 5120 states and 7782 transitions. Second operand 3 states. [2020-12-22 10:07:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:13,165 INFO L93 Difference]: Finished difference Result 10404 states and 15816 transitions. [2020-12-22 10:07:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:13,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:07:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:13,188 INFO L225 Difference]: With dead ends: 10404 [2020-12-22 10:07:13,188 INFO L226 Difference]: Without dead ends: 7586 [2020-12-22 10:07:13,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-12-22 10:07:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7520. [2020-12-22 10:07:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:07:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11270 transitions. [2020-12-22 10:07:13,730 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11270 transitions. Word has length 79 [2020-12-22 10:07:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:13,730 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11270 transitions. [2020-12-22 10:07:13,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11270 transitions. [2020-12-22 10:07:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:07:13,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:13,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:13,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:07:13,732 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:07:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:13,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462924099] [2020-12-22 10:07:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:14,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462924099] [2020-12-22 10:07:14,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:14,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:14,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970451776] [2020-12-22 10:07:14,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:14,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:14,063 INFO L87 Difference]: Start difference. First operand 7520 states and 11270 transitions. Second operand 8 states. [2020-12-22 10:07:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:14,733 INFO L93 Difference]: Finished difference Result 12740 states and 19080 transitions. [2020-12-22 10:07:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:14,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:07:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:14,752 INFO L225 Difference]: With dead ends: 12740 [2020-12-22 10:07:14,752 INFO L226 Difference]: Without dead ends: 7522 [2020-12-22 10:07:14,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:07:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2020-12-22 10:07:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 7520. [2020-12-22 10:07:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:07:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11206 transitions. [2020-12-22 10:07:15,328 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11206 transitions. Word has length 79 [2020-12-22 10:07:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:15,328 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11206 transitions. [2020-12-22 10:07:15,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11206 transitions. [2020-12-22 10:07:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:07:15,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:15,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:15,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:07:15,330 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:15,331 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:07:15,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:15,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320800937] [2020-12-22 10:07:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:15,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320800937] [2020-12-22 10:07:15,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:15,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:07:15,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909373868] [2020-12-22 10:07:15,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:07:15,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:15,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:07:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:07:15,479 INFO L87 Difference]: Start difference. First operand 7520 states and 11206 transitions. Second operand 6 states. [2020-12-22 10:07:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:15,982 INFO L93 Difference]: Finished difference Result 12738 states and 18951 transitions. [2020-12-22 10:07:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:07:15,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:07:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:16,001 INFO L225 Difference]: With dead ends: 12738 [2020-12-22 10:07:16,001 INFO L226 Difference]: Without dead ends: 7520 [2020-12-22 10:07:16,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:07:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-12-22 10:07:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-12-22 10:07:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-12-22 10:07:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11142 transitions. [2020-12-22 10:07:16,461 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11142 transitions. Word has length 80 [2020-12-22 10:07:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:16,461 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 11142 transitions. [2020-12-22 10:07:16,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:07:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11142 transitions. [2020-12-22 10:07:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:07:16,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:16,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:16,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:07:16,466 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:07:16,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:16,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012250206] [2020-12-22 10:07:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:16,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012250206] [2020-12-22 10:07:16,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:16,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:16,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388727491] [2020-12-22 10:07:16,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:16,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:16,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:16,620 INFO L87 Difference]: Start difference. First operand 7520 states and 11142 transitions. Second operand 8 states. [2020-12-22 10:07:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:17,575 INFO L93 Difference]: Finished difference Result 11426 states and 16785 transitions. [2020-12-22 10:07:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:07:17,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:07:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:17,596 INFO L225 Difference]: With dead ends: 11426 [2020-12-22 10:07:17,596 INFO L226 Difference]: Without dead ends: 11424 [2020-12-22 10:07:17,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:07:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2020-12-22 10:07:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7712. [2020-12-22 10:07:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2020-12-22 10:07:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 11302 transitions. [2020-12-22 10:07:18,144 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 11302 transitions. Word has length 80 [2020-12-22 10:07:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:18,145 INFO L481 AbstractCegarLoop]: Abstraction has 7712 states and 11302 transitions. [2020-12-22 10:07:18,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 11302 transitions. [2020-12-22 10:07:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:07:18,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:18,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:18,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:07:18,148 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:07:18,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:18,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827092334] [2020-12-22 10:07:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:07:18,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827092334] [2020-12-22 10:07:18,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:18,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:07:18,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097620476] [2020-12-22 10:07:18,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:07:18,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:18,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:07:18,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:18,213 INFO L87 Difference]: Start difference. First operand 7712 states and 11302 transitions. Second operand 3 states. [2020-12-22 10:07:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:18,871 INFO L93 Difference]: Finished difference Result 13223 states and 19372 transitions. [2020-12-22 10:07:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:07:18,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:07:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:18,893 INFO L225 Difference]: With dead ends: 13223 [2020-12-22 10:07:18,893 INFO L226 Difference]: Without dead ends: 10212 [2020-12-22 10:07:18,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:07:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10212 states. [2020-12-22 10:07:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10212 to 10210. [2020-12-22 10:07:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10210 states. [2020-12-22 10:07:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 14856 transitions. [2020-12-22 10:07:19,581 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 14856 transitions. Word has length 81 [2020-12-22 10:07:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:19,582 INFO L481 AbstractCegarLoop]: Abstraction has 10210 states and 14856 transitions. [2020-12-22 10:07:19,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:07:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 14856 transitions. [2020-12-22 10:07:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:19,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:19,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:19,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:07:19,589 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:07:19,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:19,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034570275] [2020-12-22 10:07:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:07:19,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034570275] [2020-12-22 10:07:19,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:19,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:19,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970485043] [2020-12-22 10:07:19,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:19,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:19,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:19,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:19,752 INFO L87 Difference]: Start difference. First operand 10210 states and 14856 transitions. Second operand 8 states. [2020-12-22 10:07:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:23,312 INFO L93 Difference]: Finished difference Result 59216 states and 85391 transitions. [2020-12-22 10:07:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:23,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:23,423 INFO L225 Difference]: With dead ends: 59216 [2020-12-22 10:07:23,423 INFO L226 Difference]: Without dead ends: 51310 [2020-12-22 10:07:23,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2020-12-22 10:07:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2020-12-22 10:07:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18114 states. [2020-12-22 10:07:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26152 transitions. [2020-12-22 10:07:25,347 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26152 transitions. Word has length 111 [2020-12-22 10:07:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:25,348 INFO L481 AbstractCegarLoop]: Abstraction has 18114 states and 26152 transitions. [2020-12-22 10:07:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26152 transitions. [2020-12-22 10:07:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:25,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:25,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:25,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:07:25,355 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:25,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:07:25,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:25,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116534682] [2020-12-22 10:07:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:07:25,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116534682] [2020-12-22 10:07:25,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:25,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:25,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233788353] [2020-12-22 10:07:25,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:25,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:25,516 INFO L87 Difference]: Start difference. First operand 18114 states and 26152 transitions. Second operand 8 states. [2020-12-22 10:07:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:29,606 INFO L93 Difference]: Finished difference Result 67120 states and 96687 transitions. [2020-12-22 10:07:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:29,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:29,711 INFO L225 Difference]: With dead ends: 67120 [2020-12-22 10:07:29,711 INFO L226 Difference]: Without dead ends: 59214 [2020-12-22 10:07:29,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2020-12-22 10:07:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2020-12-22 10:07:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29986 states. [2020-12-22 10:07:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43016 transitions. [2020-12-22 10:07:32,025 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43016 transitions. Word has length 111 [2020-12-22 10:07:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:32,026 INFO L481 AbstractCegarLoop]: Abstraction has 29986 states and 43016 transitions. [2020-12-22 10:07:32,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43016 transitions. [2020-12-22 10:07:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:32,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:32,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:32,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:07:32,037 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:32,037 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:07:32,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:32,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769013298] [2020-12-22 10:07:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:07:32,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769013298] [2020-12-22 10:07:32,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:32,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:32,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032531507] [2020-12-22 10:07:32,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:32,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:32,199 INFO L87 Difference]: Start difference. First operand 29986 states and 43016 transitions. Second operand 8 states. [2020-12-22 10:07:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:36,743 INFO L93 Difference]: Finished difference Result 75024 states and 107983 transitions. [2020-12-22 10:07:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:36,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:36,831 INFO L225 Difference]: With dead ends: 75024 [2020-12-22 10:07:36,831 INFO L226 Difference]: Without dead ends: 67118 [2020-12-22 10:07:36,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:36,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2020-12-22 10:07:40,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2020-12-22 10:07:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37890 states. [2020-12-22 10:07:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54312 transitions. [2020-12-22 10:07:40,212 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54312 transitions. Word has length 111 [2020-12-22 10:07:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:40,213 INFO L481 AbstractCegarLoop]: Abstraction has 37890 states and 54312 transitions. [2020-12-22 10:07:40,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54312 transitions. [2020-12-22 10:07:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:40,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:40,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:40,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:07:40,223 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:40,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:40,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:07:40,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:40,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922739753] [2020-12-22 10:07:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:07:40,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922739753] [2020-12-22 10:07:40,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:40,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:40,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715616172] [2020-12-22 10:07:40,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:40,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:40,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:40,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:40,360 INFO L87 Difference]: Start difference. First operand 37890 states and 54312 transitions. Second operand 8 states. [2020-12-22 10:07:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:45,557 INFO L93 Difference]: Finished difference Result 82928 states and 119279 transitions. [2020-12-22 10:07:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:45,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:45,642 INFO L225 Difference]: With dead ends: 82928 [2020-12-22 10:07:45,642 INFO L226 Difference]: Without dead ends: 75022 [2020-12-22 10:07:45,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75022 states. [2020-12-22 10:07:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75022 to 45794. [2020-12-22 10:07:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45794 states. [2020-12-22 10:07:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45794 states to 45794 states and 65608 transitions. [2020-12-22 10:07:49,245 INFO L78 Accepts]: Start accepts. Automaton has 45794 states and 65608 transitions. Word has length 111 [2020-12-22 10:07:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:07:49,245 INFO L481 AbstractCegarLoop]: Abstraction has 45794 states and 65608 transitions. [2020-12-22 10:07:49,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:07:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 45794 states and 65608 transitions. [2020-12-22 10:07:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:07:49,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:07:49,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:07:49,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:07:49,256 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:07:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:07:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:07:49,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:07:49,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249624963] [2020-12-22 10:07:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:07:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:07:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:07:49,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249624963] [2020-12-22 10:07:49,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:07:49,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:07:49,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460145406] [2020-12-22 10:07:49,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:07:49,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:07:49,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:07:49,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:07:49,393 INFO L87 Difference]: Start difference. First operand 45794 states and 65608 transitions. Second operand 8 states. [2020-12-22 10:07:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:07:55,995 INFO L93 Difference]: Finished difference Result 90832 states and 130575 transitions. [2020-12-22 10:07:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:07:55,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:07:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:07:56,123 INFO L225 Difference]: With dead ends: 90832 [2020-12-22 10:07:56,123 INFO L226 Difference]: Without dead ends: 82926 [2020-12-22 10:07:56,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:07:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82926 states. [2020-12-22 10:08:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82926 to 53698. [2020-12-22 10:08:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53698 states. [2020-12-22 10:08:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53698 states to 53698 states and 76904 transitions. [2020-12-22 10:08:00,864 INFO L78 Accepts]: Start accepts. Automaton has 53698 states and 76904 transitions. Word has length 111 [2020-12-22 10:08:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:00,865 INFO L481 AbstractCegarLoop]: Abstraction has 53698 states and 76904 transitions. [2020-12-22 10:08:00,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 53698 states and 76904 transitions. [2020-12-22 10:08:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:08:00,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:00,879 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 10:08:00,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:08:00,879 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:08:00,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:00,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663466387] [2020-12-22 10:08:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:00,951 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 10:08:00,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663466387] [2020-12-22 10:08:00,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:00,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:00,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351369868] [2020-12-22 10:08:00,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:00,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:00,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:00,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:00,953 INFO L87 Difference]: Start difference. First operand 53698 states and 76904 transitions. Second operand 3 states. [2020-12-22 10:08:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:04,232 INFO L93 Difference]: Finished difference Result 89511 states and 128529 transitions. [2020-12-22 10:08:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:04,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:08:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:04,280 INFO L225 Difference]: With dead ends: 89511 [2020-12-22 10:08:04,280 INFO L226 Difference]: Without dead ends: 38117 [2020-12-22 10:08:04,307 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 10:08:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2020-12-22 10:08:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 38115. [2020-12-22 10:08:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38115 states. [2020-12-22 10:08:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38115 states to 38115 states and 54670 transitions. [2020-12-22 10:08:07,370 INFO L78 Accepts]: Start accepts. Automaton has 38115 states and 54670 transitions. Word has length 113 [2020-12-22 10:08:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:07,371 INFO L481 AbstractCegarLoop]: Abstraction has 38115 states and 54670 transitions. [2020-12-22 10:08:07,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38115 states and 54670 transitions. [2020-12-22 10:08:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:08:07,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:07,387 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 10:08:07,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:08:07,387 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:07,388 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:08:07,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:07,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701391955] [2020-12-22 10:08:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:07,525 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 10:08:07,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701391955] [2020-12-22 10:08:07,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:07,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:07,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376978025] [2020-12-22 10:08:07,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:07,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:07,528 INFO L87 Difference]: Start difference. First operand 38115 states and 54670 transitions. Second operand 8 states. [2020-12-22 10:08:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:13,412 INFO L93 Difference]: Finished difference Result 71153 states and 102293 transitions. [2020-12-22 10:08:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:13,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:08:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:13,477 INFO L225 Difference]: With dead ends: 71153 [2020-12-22 10:08:13,478 INFO L226 Difference]: Without dead ends: 65647 [2020-12-22 10:08:13,492 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 10:08:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2020-12-22 10:08:17,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 43619. [2020-12-22 10:08:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43619 states. [2020-12-22 10:08:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43619 states to 43619 states and 62542 transitions. [2020-12-22 10:08:17,292 INFO L78 Accepts]: Start accepts. Automaton has 43619 states and 62542 transitions. Word has length 113 [2020-12-22 10:08:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:17,292 INFO L481 AbstractCegarLoop]: Abstraction has 43619 states and 62542 transitions. [2020-12-22 10:08:17,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43619 states and 62542 transitions. [2020-12-22 10:08:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:08:17,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:17,300 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 10:08:17,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:08:17,301 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:17,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:17,301 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:08:17,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:17,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562762608] [2020-12-22 10:08:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:17,667 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 10:08:17,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562762608] [2020-12-22 10:08:17,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455151774] [2020-12-22 10:08:17,668 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 10:08:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:17,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:08:17,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:08:18,563 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 10:08:18,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:08:18,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:08:18,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319299391] [2020-12-22 10:08:18,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:08:18,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:08:18,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:08:18,566 INFO L87 Difference]: Start difference. First operand 43619 states and 62542 transitions. Second operand 16 states. [2020-12-22 10:08:19,588 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:08:20,132 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:08:25,147 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:08:25,397 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:08:34,193 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:08:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:50,859 INFO L93 Difference]: Finished difference Result 309560 states and 436777 transitions. [2020-12-22 10:08:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:08:50,860 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:08:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:51,655 INFO L225 Difference]: With dead ends: 309560 [2020-12-22 10:08:51,655 INFO L226 Difference]: Without dead ends: 268278 [2020-12-22 10:08:51,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:08:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268278 states. [2020-12-22 10:09:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268278 to 135312. [2020-12-22 10:09:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135312 states. [2020-12-22 10:09:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135312 states to 135312 states and 188780 transitions. [2020-12-22 10:09:08,014 INFO L78 Accepts]: Start accepts. Automaton has 135312 states and 188780 transitions. Word has length 114 [2020-12-22 10:09:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:08,014 INFO L481 AbstractCegarLoop]: Abstraction has 135312 states and 188780 transitions. [2020-12-22 10:09:08,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:09:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 135312 states and 188780 transitions. [2020-12-22 10:09:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:09:08,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:08,034 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 10:09:08,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:09:08,248 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:08,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:09:08,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:08,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519820614] [2020-12-22 10:09:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:08,722 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 10:09:08,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519820614] [2020-12-22 10:09:08,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772003896] [2020-12-22 10:09:08,723 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 10:09:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:08,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:09:08,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:09:09,237 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:09:09,857 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 10:09:09,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:09:09,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:09:09,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571396576] [2020-12-22 10:09:09,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:09:09,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:09,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:09:09,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:09:09,860 INFO L87 Difference]: Start difference. First operand 135312 states and 188780 transitions. Second operand 22 states. [2020-12-22 10:09:10,459 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:09:10,886 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:09:12,299 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:12,492 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:12,747 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:09:13,057 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:09:13,813 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:09:14,015 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:09:14,335 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:09:14,636 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:09:16,956 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:17,849 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:18,133 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:19,047 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-12-22 10:09:19,182 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:19,512 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:19,661 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:19,824 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:09:21,090 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:22,204 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:09:22,613 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:09:23,630 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:24,173 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:24,416 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 10:09:24,990 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:25,240 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:09:25,783 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:26,429 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:27,398 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:09:27,541 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 10:09:27,719 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:09:28,849 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2020-12-22 10:09:29,243 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:09:30,477 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:30,943 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:31,593 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:32,217 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:09:40,615 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:09:40,754 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:40,966 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:41,113 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:41,320 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:41,498 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:41,754 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:09:42,062 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:09:42,228 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:42,455 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:09:43,040 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:09:43,216 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:43,438 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:09:43,616 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:43,834 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:09:44,188 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:09:44,464 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:09:44,605 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:44,808 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:09:44,990 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:45,227 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:09:45,448 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:09:46,059 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:09:46,383 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:09:46,560 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:09:46,870 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:09:47,029 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:09:47,801 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:48,414 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:09:48,566 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:09:48,773 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:09:49,080 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:09:49,217 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:09:49,391 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:05,126 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:10:05,467 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:05,649 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:06,062 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:10:06,232 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:06,450 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:10:06,678 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:07,925 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:10:08,232 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:08,414 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:08,571 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:10:08,815 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:09,018 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:10:09,420 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:10,112 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:10:10,279 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:10,609 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:10:12,151 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 10:10:12,376 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:10:12,667 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:10:13,237 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:13,560 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:14,353 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:17,030 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45