/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.5.ufo.BOUNDED-10.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:53:44,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:53:44,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:53:44,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:53:44,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:53:44,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:53:44,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:53:44,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:53:44,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:53:44,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:53:44,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:53:44,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:53:44,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:53:44,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:53:44,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:53:44,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:53:44,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:53:44,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:53:44,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:53:44,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:53:44,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:53:44,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:53:44,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:53:44,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:53:45,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:53:45,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:53:45,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:53:45,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:53:45,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:53:45,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:53:45,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:53:45,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:53:45,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:53:45,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:53:45,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:53:45,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:53:45,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:53:45,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:53:45,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:53:45,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:53:45,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:53:45,047 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:53:45,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:53:45,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:53:45,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:53:45,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:53:45,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:53:45,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:53:45,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:53:45,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:53:45,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:53:45,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:53:45,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:53:45,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:53:45,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:53:45,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:53:45,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:53:45,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:53:45,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:53:45,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:53:45,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:53:45,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:53:45,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:53:45,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:53:45,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:53:45,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:53:45,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:53:45,471 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:53:45,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2020-12-22 09:53:45,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab34a95e/6876b2d7d2814b4eb98dff98e00f3ab3/FLAG0e336d2b8 [2020-12-22 09:53:46,438 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:53:46,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2020-12-22 09:53:46,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab34a95e/6876b2d7d2814b4eb98dff98e00f3ab3/FLAG0e336d2b8 [2020-12-22 09:53:46,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab34a95e/6876b2d7d2814b4eb98dff98e00f3ab3 [2020-12-22 09:53:46,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:53:46,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:53:46,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:53:46,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:53:46,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:53:46,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:53:46" (1/1) ... [2020-12-22 09:53:46,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538a0626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:46, skipping insertion in model container [2020-12-22 09:53:46,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:53:46" (1/1) ... [2020-12-22 09:53:46,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:53:47,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:53:47,567 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.5.ufo.BOUNDED-10.pals+Problem12_label03.c[11730,11743] [2020-12-22 09:53:47,635 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.5.ufo.BOUNDED-10.pals+Problem12_label03.c[13824,13837] [2020-12-22 09:53:48,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:53:48,660 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:53:48,737 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.5.ufo.BOUNDED-10.pals+Problem12_label03.c[11730,11743] [2020-12-22 09:53:48,746 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.5.ufo.BOUNDED-10.pals+Problem12_label03.c[13824,13837] [2020-12-22 09:53:49,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:53:49,390 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:53:49,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49 WrapperNode [2020-12-22 09:53:49,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:53:49,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:53:49,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:53:49,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:53:49,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:49,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:53:50,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:53:50,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:53:50,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:53:50,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (1/1) ... [2020-12-22 09:53:50,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:53:50,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:53:50,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:53:50,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:53:50,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (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 09:53:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:53:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:53:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:53:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:53:56,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:53:56,522 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2020-12-22 09:53:56,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:53:56 BoogieIcfgContainer [2020-12-22 09:53:56,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:53:56,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:53:56,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:53:56,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:53:56,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:53:46" (1/3) ... [2020-12-22 09:53:56,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641de89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:53:56, skipping insertion in model container [2020-12-22 09:53:56,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:53:49" (2/3) ... [2020-12-22 09:53:56,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641de89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:53:56, skipping insertion in model container [2020-12-22 09:53:56,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:53:56" (3/3) ... [2020-12-22 09:53:56,535 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label03.c [2020-12-22 09:53:56,541 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:53:56,547 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:53:56,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:53:56,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:53:56,598 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:53:56,598 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:53:56,598 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:53:56,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:53:56,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:53:56,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:53:56,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:53:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states. [2020-12-22 09:53:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 09:53:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:53:56,644 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] [2020-12-22 09:53:56,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:53:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:53:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash -972795963, now seen corresponding path program 1 times [2020-12-22 09:53:56,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:53:56,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776101547] [2020-12-22 09:53:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:53:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:53:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:53:56,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776101547] [2020-12-22 09:53:56,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:53:56,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:53:56,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130032861] [2020-12-22 09:53:56,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:53:56,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:53:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:53:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:53:56,976 INFO L87 Difference]: Start difference. First operand 909 states. Second operand 3 states. [2020-12-22 09:54:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:03,583 INFO L93 Difference]: Finished difference Result 2552 states and 4892 transitions. [2020-12-22 09:54:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:03,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 09:54:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:03,623 INFO L225 Difference]: With dead ends: 2552 [2020-12-22 09:54:03,623 INFO L226 Difference]: Without dead ends: 1594 [2020-12-22 09:54:03,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-12-22 09:54:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2020-12-22 09:54:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1594 states. [2020-12-22 09:54:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2568 transitions. [2020-12-22 09:54:03,814 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2568 transitions. Word has length 20 [2020-12-22 09:54:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:03,815 INFO L481 AbstractCegarLoop]: Abstraction has 1594 states and 2568 transitions. [2020-12-22 09:54:03,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2568 transitions. [2020-12-22 09:54:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 09:54:03,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:03,818 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] [2020-12-22 09:54:03,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:54:03,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:03,820 INFO L82 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2020-12-22 09:54:03,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:03,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43654073] [2020-12-22 09:54:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:03,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43654073] [2020-12-22 09:54:03,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:03,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:54:03,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534005368] [2020-12-22 09:54:03,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:54:03,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:54:03,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:54:03,959 INFO L87 Difference]: Start difference. First operand 1594 states and 2568 transitions. Second operand 5 states. [2020-12-22 09:54:04,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:04,137 INFO L93 Difference]: Finished difference Result 1650 states and 2654 transitions. [2020-12-22 09:54:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:54:04,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 09:54:04,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:04,147 INFO L225 Difference]: With dead ends: 1650 [2020-12-22 09:54:04,147 INFO L226 Difference]: Without dead ends: 1594 [2020-12-22 09:54:04,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-12-22 09:54:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2020-12-22 09:54:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1594 states. [2020-12-22 09:54:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2537 transitions. [2020-12-22 09:54:04,191 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2537 transitions. Word has length 34 [2020-12-22 09:54:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:04,191 INFO L481 AbstractCegarLoop]: Abstraction has 1594 states and 2537 transitions. [2020-12-22 09:54:04,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:54:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2537 transitions. [2020-12-22 09:54:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:04,201 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] [2020-12-22 09:54:04,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:54:04,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2020-12-22 09:54:04,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:04,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453970941] [2020-12-22 09:54:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:04,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453970941] [2020-12-22 09:54:04,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:04,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:04,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156687479] [2020-12-22 09:54:04,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:04,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:04,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,419 INFO L87 Difference]: Start difference. First operand 1594 states and 2537 transitions. Second operand 3 states. [2020-12-22 09:54:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:04,463 INFO L93 Difference]: Finished difference Result 1692 states and 2691 transitions. [2020-12-22 09:54:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:04,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:54:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:04,473 INFO L225 Difference]: With dead ends: 1692 [2020-12-22 09:54:04,474 INFO L226 Difference]: Without dead ends: 1640 [2020-12-22 09:54:04,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-12-22 09:54:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1638. [2020-12-22 09:54:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-12-22 09:54:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2607 transitions. [2020-12-22 09:54:04,535 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2607 transitions. Word has length 64 [2020-12-22 09:54:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:04,537 INFO L481 AbstractCegarLoop]: Abstraction has 1638 states and 2607 transitions. [2020-12-22 09:54:04,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2607 transitions. [2020-12-22 09:54:04,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:04,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:04,540 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] [2020-12-22 09:54:04,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:54:04,541 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:04,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:04,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2020-12-22 09:54:04,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:04,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173751703] [2020-12-22 09:54:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:04,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173751703] [2020-12-22 09:54:04,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:04,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:04,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653326715] [2020-12-22 09:54:04,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:04,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:04,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,628 INFO L87 Difference]: Start difference. First operand 1638 states and 2607 transitions. Second operand 3 states. [2020-12-22 09:54:04,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:04,675 INFO L93 Difference]: Finished difference Result 1818 states and 2891 transitions. [2020-12-22 09:54:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:04,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:54:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:04,686 INFO L225 Difference]: With dead ends: 1818 [2020-12-22 09:54:04,686 INFO L226 Difference]: Without dead ends: 1722 [2020-12-22 09:54:04,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-12-22 09:54:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2020-12-22 09:54:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1720 states. [2020-12-22 09:54:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2736 transitions. [2020-12-22 09:54:04,744 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2736 transitions. Word has length 64 [2020-12-22 09:54:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:04,747 INFO L481 AbstractCegarLoop]: Abstraction has 1720 states and 2736 transitions. [2020-12-22 09:54:04,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2736 transitions. [2020-12-22 09:54:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:04,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:04,748 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] [2020-12-22 09:54:04,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:54:04,749 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:04,749 INFO L82 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2020-12-22 09:54:04,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:04,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126146828] [2020-12-22 09:54:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:04,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126146828] [2020-12-22 09:54:04,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:04,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:04,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747897232] [2020-12-22 09:54:04,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:04,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:04,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:04,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,875 INFO L87 Difference]: Start difference. First operand 1720 states and 2736 transitions. Second operand 3 states. [2020-12-22 09:54:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:04,931 INFO L93 Difference]: Finished difference Result 2052 states and 3258 transitions. [2020-12-22 09:54:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:04,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:54:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:04,943 INFO L225 Difference]: With dead ends: 2052 [2020-12-22 09:54:04,943 INFO L226 Difference]: Without dead ends: 1874 [2020-12-22 09:54:04,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-12-22 09:54:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1872. [2020-12-22 09:54:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-12-22 09:54:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2972 transitions. [2020-12-22 09:54:05,000 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2972 transitions. Word has length 64 [2020-12-22 09:54:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:05,000 INFO L481 AbstractCegarLoop]: Abstraction has 1872 states and 2972 transitions. [2020-12-22 09:54:05,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2972 transitions. [2020-12-22 09:54:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:05,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:05,002 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] [2020-12-22 09:54:05,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:54:05,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:05,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2020-12-22 09:54:05,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:05,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935125730] [2020-12-22 09:54:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:05,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935125730] [2020-12-22 09:54:05,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:05,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:05,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263081207] [2020-12-22 09:54:05,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:05,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:05,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:05,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:05,108 INFO L87 Difference]: Start difference. First operand 1872 states and 2972 transitions. Second operand 3 states. [2020-12-22 09:54:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:05,164 INFO L93 Difference]: Finished difference Result 2484 states and 3926 transitions. [2020-12-22 09:54:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:05,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:54:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:05,177 INFO L225 Difference]: With dead ends: 2484 [2020-12-22 09:54:05,178 INFO L226 Difference]: Without dead ends: 2154 [2020-12-22 09:54:05,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2020-12-22 09:54:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2152. [2020-12-22 09:54:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2020-12-22 09:54:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3400 transitions. [2020-12-22 09:54:05,244 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3400 transitions. Word has length 64 [2020-12-22 09:54:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:05,245 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 3400 transitions. [2020-12-22 09:54:05,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3400 transitions. [2020-12-22 09:54:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:05,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:05,246 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] [2020-12-22 09:54:05,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:54:05,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2020-12-22 09:54:05,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:05,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597883593] [2020-12-22 09:54:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597883593] [2020-12-22 09:54:05,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:05,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:05,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480299246] [2020-12-22 09:54:05,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:05,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:05,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:05,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:05,311 INFO L87 Difference]: Start difference. First operand 2152 states and 3400 transitions. Second operand 3 states. [2020-12-22 09:54:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:05,384 INFO L93 Difference]: Finished difference Result 3276 states and 5130 transitions. [2020-12-22 09:54:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:05,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 09:54:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:05,400 INFO L225 Difference]: With dead ends: 3276 [2020-12-22 09:54:05,400 INFO L226 Difference]: Without dead ends: 2666 [2020-12-22 09:54:05,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-12-22 09:54:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-12-22 09:54:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-12-22 09:54:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4168 transitions. [2020-12-22 09:54:05,496 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4168 transitions. Word has length 64 [2020-12-22 09:54:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:05,497 INFO L481 AbstractCegarLoop]: Abstraction has 2664 states and 4168 transitions. [2020-12-22 09:54:05,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4168 transitions. [2020-12-22 09:54:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 09:54:05,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:05,498 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] [2020-12-22 09:54:05,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:54:05,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2020-12-22 09:54:05,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:05,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108757016] [2020-12-22 09:54:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:05,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108757016] [2020-12-22 09:54:05,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:05,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:05,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007895512] [2020-12-22 09:54:05,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:05,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:05,653 INFO L87 Difference]: Start difference. First operand 2664 states and 4168 transitions. Second operand 7 states. [2020-12-22 09:54:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:06,400 INFO L93 Difference]: Finished difference Result 13884 states and 21298 transitions. [2020-12-22 09:54:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 09:54:06,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-22 09:54:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:06,506 INFO L225 Difference]: With dead ends: 13884 [2020-12-22 09:54:06,506 INFO L226 Difference]: Without dead ends: 12762 [2020-12-22 09:54:06,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:54:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2020-12-22 09:54:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 3784. [2020-12-22 09:54:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-12-22 09:54:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5816 transitions. [2020-12-22 09:54:06,852 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5816 transitions. Word has length 64 [2020-12-22 09:54:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:06,852 INFO L481 AbstractCegarLoop]: Abstraction has 3784 states and 5816 transitions. [2020-12-22 09:54:06,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5816 transitions. [2020-12-22 09:54:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:54:06,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:06,853 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] [2020-12-22 09:54:06,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:54:06,854 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:06,854 INFO L82 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2020-12-22 09:54:06,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:06,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949649412] [2020-12-22 09:54:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:07,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949649412] [2020-12-22 09:54:07,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:07,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:54:07,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104692349] [2020-12-22 09:54:07,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:07,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:07,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:07,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:07,041 INFO L87 Difference]: Start difference. First operand 3784 states and 5816 transitions. Second operand 3 states. [2020-12-22 09:54:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:07,281 INFO L93 Difference]: Finished difference Result 7070 states and 10732 transitions. [2020-12-22 09:54:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:07,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 09:54:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:07,295 INFO L225 Difference]: With dead ends: 7070 [2020-12-22 09:54:07,295 INFO L226 Difference]: Without dead ends: 4828 [2020-12-22 09:54:07,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2020-12-22 09:54:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2020-12-22 09:54:07,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-12-22 09:54:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7322 transitions. [2020-12-22 09:54:07,583 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7322 transitions. Word has length 66 [2020-12-22 09:54:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:07,583 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 7322 transitions. [2020-12-22 09:54:07,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7322 transitions. [2020-12-22 09:54:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:54:07,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:07,586 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] [2020-12-22 09:54:07,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:54:07,586 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2020-12-22 09:54:07,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:07,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090344825] [2020-12-22 09:54:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:07,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090344825] [2020-12-22 09:54:07,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:07,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:07,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064103773] [2020-12-22 09:54:07,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:07,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:07,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:07,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:07,808 INFO L87 Difference]: Start difference. First operand 4826 states and 7322 transitions. Second operand 7 states. [2020-12-22 09:54:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:08,285 INFO L93 Difference]: Finished difference Result 8110 states and 12188 transitions. [2020-12-22 09:54:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:08,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-22 09:54:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:08,299 INFO L225 Difference]: With dead ends: 8110 [2020-12-22 09:54:08,299 INFO L226 Difference]: Without dead ends: 4828 [2020-12-22 09:54:08,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:54:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2020-12-22 09:54:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2020-12-22 09:54:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-12-22 09:54:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7274 transitions. [2020-12-22 09:54:08,589 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7274 transitions. Word has length 66 [2020-12-22 09:54:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:08,589 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 7274 transitions. [2020-12-22 09:54:08,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7274 transitions. [2020-12-22 09:54:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:54:08,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:08,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:08,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:54:08,591 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:08,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2020-12-22 09:54:08,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:08,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182599711] [2020-12-22 09:54:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:08,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182599711] [2020-12-22 09:54:08,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:08,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:54:08,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241786266] [2020-12-22 09:54:08,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:54:08,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:08,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:54:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:54:08,716 INFO L87 Difference]: Start difference. First operand 4826 states and 7274 transitions. Second operand 6 states. [2020-12-22 09:54:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:09,129 INFO L93 Difference]: Finished difference Result 8108 states and 12091 transitions. [2020-12-22 09:54:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:54:09,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:54:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:09,144 INFO L225 Difference]: With dead ends: 8108 [2020-12-22 09:54:09,144 INFO L226 Difference]: Without dead ends: 4826 [2020-12-22 09:54:09,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:54:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2020-12-22 09:54:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2020-12-22 09:54:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-12-22 09:54:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7226 transitions. [2020-12-22 09:54:09,529 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7226 transitions. Word has length 67 [2020-12-22 09:54:09,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:09,529 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 7226 transitions. [2020-12-22 09:54:09,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:54:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7226 transitions. [2020-12-22 09:54:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:54:09,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:09,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:09,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:54:09,531 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:09,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2020-12-22 09:54:09,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:09,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725712593] [2020-12-22 09:54:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:09,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725712593] [2020-12-22 09:54:09,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:09,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:54:09,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910310181] [2020-12-22 09:54:09,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:54:09,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:09,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:54:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:54:09,618 INFO L87 Difference]: Start difference. First operand 4826 states and 7226 transitions. Second operand 6 states. [2020-12-22 09:54:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:10,052 INFO L93 Difference]: Finished difference Result 8108 states and 11995 transitions. [2020-12-22 09:54:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:54:10,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:54:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:10,063 INFO L225 Difference]: With dead ends: 8108 [2020-12-22 09:54:10,063 INFO L226 Difference]: Without dead ends: 4826 [2020-12-22 09:54:10,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:54:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2020-12-22 09:54:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2020-12-22 09:54:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4826 states. [2020-12-22 09:54:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7178 transitions. [2020-12-22 09:54:10,384 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7178 transitions. Word has length 67 [2020-12-22 09:54:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:10,384 INFO L481 AbstractCegarLoop]: Abstraction has 4826 states and 7178 transitions. [2020-12-22 09:54:10,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:54:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7178 transitions. [2020-12-22 09:54:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:54:10,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:10,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:10,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:54:10,386 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2020-12-22 09:54:10,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:10,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495258887] [2020-12-22 09:54:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:10,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495258887] [2020-12-22 09:54:10,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:10,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:54:10,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590273550] [2020-12-22 09:54:10,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:54:10,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:54:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:54:10,495 INFO L87 Difference]: Start difference. First operand 4826 states and 7178 transitions. Second operand 5 states. [2020-12-22 09:54:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:11,044 INFO L93 Difference]: Finished difference Result 7669 states and 11152 transitions. [2020-12-22 09:54:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:11,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 09:54:11,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:11,126 INFO L225 Difference]: With dead ends: 7669 [2020-12-22 09:54:11,126 INFO L226 Difference]: Without dead ends: 7667 [2020-12-22 09:54:11,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:54:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2020-12-22 09:54:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 5018. [2020-12-22 09:54:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5018 states. [2020-12-22 09:54:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 7354 transitions. [2020-12-22 09:54:11,572 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 7354 transitions. Word has length 67 [2020-12-22 09:54:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:11,572 INFO L481 AbstractCegarLoop]: Abstraction has 5018 states and 7354 transitions. [2020-12-22 09:54:11,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:54:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 7354 transitions. [2020-12-22 09:54:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:11,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:11,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:11,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:54:11,577 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2020-12-22 09:54:11,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:11,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338344917] [2020-12-22 09:54:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 09:54:11,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338344917] [2020-12-22 09:54:11,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:11,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981889846] [2020-12-22 09:54:11,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:11,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:11,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:11,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:11,726 INFO L87 Difference]: Start difference. First operand 5018 states and 7354 transitions. Second operand 7 states. [2020-12-22 09:54:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:13,309 INFO L93 Difference]: Finished difference Result 23094 states and 32784 transitions. [2020-12-22 09:54:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:13,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 09:54:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:13,348 INFO L225 Difference]: With dead ends: 23094 [2020-12-22 09:54:13,348 INFO L226 Difference]: Without dead ends: 19620 [2020-12-22 09:54:13,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:54:13,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19620 states. [2020-12-22 09:54:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19620 to 8490. [2020-12-22 09:54:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8490 states. [2020-12-22 09:54:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 12202 transitions. [2020-12-22 09:54:14,069 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 12202 transitions. Word has length 95 [2020-12-22 09:54:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:14,070 INFO L481 AbstractCegarLoop]: Abstraction has 8490 states and 12202 transitions. [2020-12-22 09:54:14,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 12202 transitions. [2020-12-22 09:54:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:14,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:14,088 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:14,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:54:14,088 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2020-12-22 09:54:14,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:14,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400591818] [2020-12-22 09:54:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 09:54:14,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400591818] [2020-12-22 09:54:14,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:14,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:14,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502066527] [2020-12-22 09:54:14,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:14,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:14,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:14,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:14,221 INFO L87 Difference]: Start difference. First operand 8490 states and 12202 transitions. Second operand 7 states. [2020-12-22 09:54:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:15,972 INFO L93 Difference]: Finished difference Result 26566 states and 37632 transitions. [2020-12-22 09:54:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:15,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 09:54:15,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:16,018 INFO L225 Difference]: With dead ends: 26566 [2020-12-22 09:54:16,019 INFO L226 Difference]: Without dead ends: 23092 [2020-12-22 09:54:16,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:54:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2020-12-22 09:54:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 13706. [2020-12-22 09:54:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13706 states. [2020-12-22 09:54:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 19434 transitions. [2020-12-22 09:54:17,131 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 19434 transitions. Word has length 95 [2020-12-22 09:54:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:17,131 INFO L481 AbstractCegarLoop]: Abstraction has 13706 states and 19434 transitions. [2020-12-22 09:54:17,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 19434 transitions. [2020-12-22 09:54:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:17,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:17,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:17,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:54:17,140 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:17,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2020-12-22 09:54:17,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:17,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401305391] [2020-12-22 09:54:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:54:17,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401305391] [2020-12-22 09:54:17,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:17,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:17,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262884103] [2020-12-22 09:54:17,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:17,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:17,278 INFO L87 Difference]: Start difference. First operand 13706 states and 19434 transitions. Second operand 7 states. [2020-12-22 09:54:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:19,037 INFO L93 Difference]: Finished difference Result 30038 states and 42480 transitions. [2020-12-22 09:54:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:19,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 09:54:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:19,084 INFO L225 Difference]: With dead ends: 30038 [2020-12-22 09:54:19,085 INFO L226 Difference]: Without dead ends: 26564 [2020-12-22 09:54:19,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:54:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26564 states. [2020-12-22 09:54:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26564 to 17178. [2020-12-22 09:54:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17178 states. [2020-12-22 09:54:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 24282 transitions. [2020-12-22 09:54:20,244 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 24282 transitions. Word has length 95 [2020-12-22 09:54:20,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:20,245 INFO L481 AbstractCegarLoop]: Abstraction has 17178 states and 24282 transitions. [2020-12-22 09:54:20,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 24282 transitions. [2020-12-22 09:54:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:20,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:20,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:20,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:54:20,252 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2020-12-22 09:54:20,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366419860] [2020-12-22 09:54:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 09:54:20,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366419860] [2020-12-22 09:54:20,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:20,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:20,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494368741] [2020-12-22 09:54:20,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:20,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:20,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:20,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:20,374 INFO L87 Difference]: Start difference. First operand 17178 states and 24282 transitions. Second operand 7 states. [2020-12-22 09:54:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:22,044 INFO L93 Difference]: Finished difference Result 33510 states and 47328 transitions. [2020-12-22 09:54:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:22,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 09:54:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:22,089 INFO L225 Difference]: With dead ends: 33510 [2020-12-22 09:54:22,089 INFO L226 Difference]: Without dead ends: 30036 [2020-12-22 09:54:22,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:54:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30036 states. [2020-12-22 09:54:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30036 to 20650. [2020-12-22 09:54:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20650 states. [2020-12-22 09:54:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20650 states to 20650 states and 29130 transitions. [2020-12-22 09:54:23,552 INFO L78 Accepts]: Start accepts. Automaton has 20650 states and 29130 transitions. Word has length 95 [2020-12-22 09:54:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:23,552 INFO L481 AbstractCegarLoop]: Abstraction has 20650 states and 29130 transitions. [2020-12-22 09:54:23,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20650 states and 29130 transitions. [2020-12-22 09:54:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:23,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:54:23,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:54:23,559 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2020-12-22 09:54:23,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:23,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406756375] [2020-12-22 09:54:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:54:23,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406756375] [2020-12-22 09:54:23,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:23,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:54:23,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142324145] [2020-12-22 09:54:23,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:54:23,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:23,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:54:23,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:54:23,682 INFO L87 Difference]: Start difference. First operand 20650 states and 29130 transitions. Second operand 7 states. [2020-12-22 09:54:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:25,808 INFO L93 Difference]: Finished difference Result 34902 states and 49296 transitions. [2020-12-22 09:54:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:54:25,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 09:54:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:25,872 INFO L225 Difference]: With dead ends: 34902 [2020-12-22 09:54:25,872 INFO L226 Difference]: Without dead ends: 32468 [2020-12-22 09:54:25,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:54:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2020-12-22 09:54:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 23082. [2020-12-22 09:54:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23082 states. [2020-12-22 09:54:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23082 states to 23082 states and 32554 transitions. [2020-12-22 09:54:27,478 INFO L78 Accepts]: Start accepts. Automaton has 23082 states and 32554 transitions. Word has length 95 [2020-12-22 09:54:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:27,479 INFO L481 AbstractCegarLoop]: Abstraction has 23082 states and 32554 transitions. [2020-12-22 09:54:27,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:54:27,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23082 states and 32554 transitions. [2020-12-22 09:54:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 09:54:27,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:27,487 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:54:27,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:54:27,487 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1418474400, now seen corresponding path program 1 times [2020-12-22 09:54:27,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:27,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436136339] [2020-12-22 09:54:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:27,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436136339] [2020-12-22 09:54:27,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:54:27,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:54:27,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844579044] [2020-12-22 09:54:27,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:54:27,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:54:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:27,566 INFO L87 Difference]: Start difference. First operand 23082 states and 32554 transitions. Second operand 3 states. [2020-12-22 09:54:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:35,065 INFO L93 Difference]: Finished difference Result 26088 states and 37385 transitions. [2020-12-22 09:54:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:54:35,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 09:54:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:35,107 INFO L225 Difference]: With dead ends: 26088 [2020-12-22 09:54:35,107 INFO L226 Difference]: Without dead ends: 24584 [2020-12-22 09:54:35,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:54:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24584 states. [2020-12-22 09:54:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24584 to 24584. [2020-12-22 09:54:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24584 states. [2020-12-22 09:54:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 34260 transitions. [2020-12-22 09:54:36,588 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 34260 transitions. Word has length 95 [2020-12-22 09:54:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:54:36,589 INFO L481 AbstractCegarLoop]: Abstraction has 24584 states and 34260 transitions. [2020-12-22 09:54:36,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:54:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 34260 transitions. [2020-12-22 09:54:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 09:54:36,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:54:36,597 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] [2020-12-22 09:54:36,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:54:36,597 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:54:36,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:54:36,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2020-12-22 09:54:36,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:54:36,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893979377] [2020-12-22 09:54:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:54:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:36,864 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-12-22 09:54:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:54:37,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893979377] [2020-12-22 09:54:37,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925105952] [2020-12-22 09:54:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:54:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:54:37,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 09:54:37,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:54:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:54:37,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:54:37,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 09:54:37,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225460708] [2020-12-22 09:54:37,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 09:54:37,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:54:37,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 09:54:37,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-12-22 09:54:37,805 INFO L87 Difference]: Start difference. First operand 24584 states and 34260 transitions. Second operand 21 states. [2020-12-22 09:54:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:54:52,878 INFO L93 Difference]: Finished difference Result 141385 states and 195741 transitions. [2020-12-22 09:54:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-12-22 09:54:52,878 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-12-22 09:54:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:54:53,087 INFO L225 Difference]: With dead ends: 141385 [2020-12-22 09:54:53,088 INFO L226 Difference]: Without dead ends: 119847 [2020-12-22 09:54:53,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4681 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2354, Invalid=10078, Unknown=0, NotChecked=0, Total=12432 [2020-12-22 09:54:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119847 states. [2020-12-22 09:55:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119847 to 75264. [2020-12-22 09:55:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75264 states. [2020-12-22 09:55:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75264 states to 75264 states and 103668 transitions. [2020-12-22 09:55:00,293 INFO L78 Accepts]: Start accepts. Automaton has 75264 states and 103668 transitions. Word has length 96 [2020-12-22 09:55:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:55:00,293 INFO L481 AbstractCegarLoop]: Abstraction has 75264 states and 103668 transitions. [2020-12-22 09:55:00,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 09:55:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 75264 states and 103668 transitions. [2020-12-22 09:55:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:55:00,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:55:00,302 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] [2020-12-22 09:55:00,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:55:00,516 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:55:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:55:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1879245087, now seen corresponding path program 1 times [2020-12-22 09:55:00,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:55:00,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598741017] [2020-12-22 09:55:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:55:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:55:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:55:00,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598741017] [2020-12-22 09:55:00,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210251066] [2020-12-22 09:55:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:55:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:55:00,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:55:00,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:55:01,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:55:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:55:01,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:55:01,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:55:01,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619642639] [2020-12-22 09:55:01,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:55:01,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:55:01,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:55:01,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:55:01,582 INFO L87 Difference]: Start difference. First operand 75264 states and 103668 transitions. Second operand 17 states. [2020-12-22 09:55:02,435 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 09:55:05,726 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 09:55:05,879 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 09:55:06,088 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 09:55:06,330 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 09:55:06,581 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 09:55:07,268 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 09:55:07,612 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 09:55:07,871 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-22 09:55:08,021 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 09:55:08,334 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 09:55:09,048 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 09:55:09,372 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 09:55:10,445 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 09:55:15,063 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 09:56:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:56:34,696 INFO L93 Difference]: Finished difference Result 951470 states and 1295743 transitions. [2020-12-22 09:56:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-12-22 09:56:34,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-12-22 09:56:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:56:36,576 INFO L225 Difference]: With dead ends: 951470 [2020-12-22 09:56:36,577 INFO L226 Difference]: Without dead ends: 879252 [2020-12-22 09:56:36,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6261 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2263, Invalid=14249, Unknown=0, NotChecked=0, Total=16512 [2020-12-22 09:56:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879252 states. [2020-12-22 09:57:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879252 to 338020. [2020-12-22 09:57:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338020 states. [2020-12-22 09:57:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338020 states to 338020 states and 460732 transitions. [2020-12-22 09:57:16,216 INFO L78 Accepts]: Start accepts. Automaton has 338020 states and 460732 transitions. Word has length 97 [2020-12-22 09:57:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:57:16,217 INFO L481 AbstractCegarLoop]: Abstraction has 338020 states and 460732 transitions. [2020-12-22 09:57:16,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:57:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 338020 states and 460732 transitions. [2020-12-22 09:57:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 09:57:16,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:57:16,232 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] [2020-12-22 09:57:16,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:57:16,447 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:57:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:57:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash -135405655, now seen corresponding path program 1 times [2020-12-22 09:57:16,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:57:16,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397389661] [2020-12-22 09:57:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:57:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:57:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:57:16,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397389661] [2020-12-22 09:57:16,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:57:16,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:57:16,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775912524] [2020-12-22 09:57:16,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:57:16,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:57:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:57:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:57:16,542 INFO L87 Difference]: Start difference. First operand 338020 states and 460732 transitions. Second operand 3 states.