/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/product-lines/email_spec11_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:22:04,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:22:04,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:22:04,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:22:04,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:22:04,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:22:04,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:22:04,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:22:05,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:22:05,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:22:05,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:22:05,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:22:05,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:22:05,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:22:05,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:22:05,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:22:05,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:22:05,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:22:05,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:22:05,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:22:05,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:22:05,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:22:05,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:22:05,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:22:05,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:22:05,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:22:05,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:22:05,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:22:05,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:22:05,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:22:05,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:22:05,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:22:05,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:22:05,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:22:05,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:22:05,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:22:05,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:22:05,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:22:05,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:22:05,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:22:05,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:22:05,099 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:22:05,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:22:05,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:22:05,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:22:05,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:22:05,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:22:05,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:22:05,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:22:05,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:22:05,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:22:05,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:22:05,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:22:05,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:22:05,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:22:05,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:22:05,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:22:05,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:22:05,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:22:05,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:22:05,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:22:05,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:22:05,551 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:22:05,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2020-12-22 06:22:05,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bbd12a5/3497bb031bdb4b7394b7de01e9f2c187/FLAGdd634fa93 [2020-12-22 06:22:06,417 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:22:06,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2020-12-22 06:22:06,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bbd12a5/3497bb031bdb4b7394b7de01e9f2c187/FLAGdd634fa93 [2020-12-22 06:22:06,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bbd12a5/3497bb031bdb4b7394b7de01e9f2c187 [2020-12-22 06:22:06,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:22:06,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:22:06,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:22:06,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:22:06,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:22:06,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:22:06" (1/1) ... [2020-12-22 06:22:06,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326af531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:06, skipping insertion in model container [2020-12-22 06:22:06,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:22:06" (1/1) ... [2020-12-22 06:22:06,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:22:06,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:22:07,359 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/product-lines/email_spec11_product35.cil.c[60812,60825] [2020-12-22 06:22:07,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:22:07,435 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:22:07,575 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/product-lines/email_spec11_product35.cil.c[60812,60825] [2020-12-22 06:22:07,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:22:07,707 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:22:07,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07 WrapperNode [2020-12-22 06:22:07,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:22:07,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:22:07,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:22:07,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:22:07,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:07,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:07,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:22:07,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:22:07,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:22:07,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:22:08,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (1/1) ... [2020-12-22 06:22:08,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:22:08,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:22:08,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:22:08,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:22:08,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (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 06:22:08,302 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:22:08,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:22:08,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:22:08,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:22:08,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:22:12,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:22:12,663 INFO L299 CfgBuilder]: Removed 937 assume(true) statements. [2020-12-22 06:22:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:22:12 BoogieIcfgContainer [2020-12-22 06:22:12,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:22:12,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:22:12,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:22:12,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:22:12,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:22:06" (1/3) ... [2020-12-22 06:22:12,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c5129f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:22:12, skipping insertion in model container [2020-12-22 06:22:12,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:22:07" (2/3) ... [2020-12-22 06:22:12,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c5129f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:22:12, skipping insertion in model container [2020-12-22 06:22:12,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:22:12" (3/3) ... [2020-12-22 06:22:12,676 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product35.cil.c [2020-12-22 06:22:12,682 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:22:12,687 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:22:12,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:22:12,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:22:12,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:22:12,741 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:22:12,741 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:22:12,741 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:22:12,741 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:22:12,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:22:12,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:22:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states. [2020-12-22 06:22:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:22:12,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:12,796 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] [2020-12-22 06:22:12,797 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 859785730, now seen corresponding path program 1 times [2020-12-22 06:22:12,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:12,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388556241] [2020-12-22 06:22:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:13,227 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 06:22:13,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388556241] [2020-12-22 06:22:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:13,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407383380] [2020-12-22 06:22:13,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:13,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:13,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:13,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:13,253 INFO L87 Difference]: Start difference. First operand 1330 states. Second operand 3 states. [2020-12-22 06:22:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:13,537 INFO L93 Difference]: Finished difference Result 3955 states and 6755 transitions. [2020-12-22 06:22:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:13,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:22:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:13,582 INFO L225 Difference]: With dead ends: 3955 [2020-12-22 06:22:13,582 INFO L226 Difference]: Without dead ends: 2432 [2020-12-22 06:22:13,595 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 06:22:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2020-12-22 06:22:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1225. [2020-12-22 06:22:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2092 transitions. [2020-12-22 06:22:13,752 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2092 transitions. Word has length 65 [2020-12-22 06:22:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:13,753 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2092 transitions. [2020-12-22 06:22:13,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2092 transitions. [2020-12-22 06:22:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:22:13,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:13,763 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 06:22:13,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:22:13,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:13,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1960805871, now seen corresponding path program 1 times [2020-12-22 06:22:13,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:13,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473361280] [2020-12-22 06:22:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:14,002 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 06:22:14,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473361280] [2020-12-22 06:22:14,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:14,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:14,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756884297] [2020-12-22 06:22:14,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:14,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:14,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:14,009 INFO L87 Difference]: Start difference. First operand 1225 states and 2092 transitions. Second operand 5 states. [2020-12-22 06:22:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:14,328 INFO L93 Difference]: Finished difference Result 3624 states and 6192 transitions. [2020-12-22 06:22:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:22:14,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:22:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:14,346 INFO L225 Difference]: With dead ends: 3624 [2020-12-22 06:22:14,346 INFO L226 Difference]: Without dead ends: 2418 [2020-12-22 06:22:14,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:22:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-12-22 06:22:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1225. [2020-12-22 06:22:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2091 transitions. [2020-12-22 06:22:14,426 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2091 transitions. Word has length 67 [2020-12-22 06:22:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:14,426 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2091 transitions. [2020-12-22 06:22:14,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2091 transitions. [2020-12-22 06:22:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:22:14,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:14,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:14,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:22:14,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash 122726308, now seen corresponding path program 1 times [2020-12-22 06:22:14,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:14,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649735896] [2020-12-22 06:22:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:14,594 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 06:22:14,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649735896] [2020-12-22 06:22:14,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:14,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:14,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918328442] [2020-12-22 06:22:14,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:14,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:14,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:14,597 INFO L87 Difference]: Start difference. First operand 1225 states and 2091 transitions. Second operand 3 states. [2020-12-22 06:22:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:14,685 INFO L93 Difference]: Finished difference Result 2432 states and 4156 transitions. [2020-12-22 06:22:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:14,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:22:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:14,693 INFO L225 Difference]: With dead ends: 2432 [2020-12-22 06:22:14,693 INFO L226 Difference]: Without dead ends: 1230 [2020-12-22 06:22:14,697 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 06:22:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-12-22 06:22:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1225. [2020-12-22 06:22:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2090 transitions. [2020-12-22 06:22:14,771 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2090 transitions. Word has length 68 [2020-12-22 06:22:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:14,778 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2090 transitions. [2020-12-22 06:22:14,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2090 transitions. [2020-12-22 06:22:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:22:14,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:14,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:14,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:22:14,782 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash 436740382, now seen corresponding path program 1 times [2020-12-22 06:22:14,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:14,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440453324] [2020-12-22 06:22:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:14,958 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 06:22:14,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440453324] [2020-12-22 06:22:14,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:14,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:14,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82613767] [2020-12-22 06:22:14,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:14,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:14,963 INFO L87 Difference]: Start difference. First operand 1225 states and 2090 transitions. Second operand 3 states. [2020-12-22 06:22:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:15,048 INFO L93 Difference]: Finished difference Result 2442 states and 4169 transitions. [2020-12-22 06:22:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:15,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:22:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:15,058 INFO L225 Difference]: With dead ends: 2442 [2020-12-22 06:22:15,058 INFO L226 Difference]: Without dead ends: 1225 [2020-12-22 06:22:15,063 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 06:22:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-12-22 06:22:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2020-12-22 06:22:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2088 transitions. [2020-12-22 06:22:15,119 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2088 transitions. Word has length 69 [2020-12-22 06:22:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:15,119 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2088 transitions. [2020-12-22 06:22:15,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2088 transitions. [2020-12-22 06:22:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:22:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:15,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:15,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:22:15,122 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 543510121, now seen corresponding path program 1 times [2020-12-22 06:22:15,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:15,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112915082] [2020-12-22 06:22:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:15,225 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 06:22:15,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112915082] [2020-12-22 06:22:15,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:15,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:15,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521215003] [2020-12-22 06:22:15,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:15,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:15,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:15,228 INFO L87 Difference]: Start difference. First operand 1225 states and 2088 transitions. Second operand 5 states. [2020-12-22 06:22:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:15,544 INFO L93 Difference]: Finished difference Result 3614 states and 6172 transitions. [2020-12-22 06:22:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:15,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:22:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:15,562 INFO L225 Difference]: With dead ends: 3614 [2020-12-22 06:22:15,562 INFO L226 Difference]: Without dead ends: 2416 [2020-12-22 06:22:15,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:22:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2020-12-22 06:22:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1225. [2020-12-22 06:22:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2087 transitions. [2020-12-22 06:22:15,654 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2087 transitions. Word has length 70 [2020-12-22 06:22:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:15,654 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2087 transitions. [2020-12-22 06:22:15,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2087 transitions. [2020-12-22 06:22:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:22:15,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:15,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:15,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:22:15,657 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:15,657 INFO L82 PathProgramCache]: Analyzing trace with hash 935956198, now seen corresponding path program 1 times [2020-12-22 06:22:15,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:15,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853415174] [2020-12-22 06:22:15,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:15,777 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 06:22:15,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853415174] [2020-12-22 06:22:15,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:15,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:15,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733502692] [2020-12-22 06:22:15,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:15,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:15,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:15,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:15,780 INFO L87 Difference]: Start difference. First operand 1225 states and 2087 transitions. Second operand 5 states. [2020-12-22 06:22:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:16,119 INFO L93 Difference]: Finished difference Result 3619 states and 6177 transitions. [2020-12-22 06:22:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:16,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:22:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:16,135 INFO L225 Difference]: With dead ends: 3619 [2020-12-22 06:22:16,135 INFO L226 Difference]: Without dead ends: 2421 [2020-12-22 06:22:16,138 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 06:22:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-12-22 06:22:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1225. [2020-12-22 06:22:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-12-22 06:22:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2086 transitions. [2020-12-22 06:22:16,235 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2086 transitions. Word has length 71 [2020-12-22 06:22:16,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:16,235 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 2086 transitions. [2020-12-22 06:22:16,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2086 transitions. [2020-12-22 06:22:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:22:16,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:16,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:16,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:22:16,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1587868366, now seen corresponding path program 1 times [2020-12-22 06:22:16,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:16,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742669713] [2020-12-22 06:22:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:16,359 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 06:22:16,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742669713] [2020-12-22 06:22:16,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:16,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:16,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741368543] [2020-12-22 06:22:16,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:16,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:16,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:16,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:16,363 INFO L87 Difference]: Start difference. First operand 1225 states and 2086 transitions. Second operand 3 states. [2020-12-22 06:22:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:16,457 INFO L93 Difference]: Finished difference Result 2165 states and 3659 transitions. [2020-12-22 06:22:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:16,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:22:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:16,465 INFO L225 Difference]: With dead ends: 2165 [2020-12-22 06:22:16,466 INFO L226 Difference]: Without dead ends: 1228 [2020-12-22 06:22:16,469 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 06:22:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2020-12-22 06:22:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1227. [2020-12-22 06:22:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:22:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2088 transitions. [2020-12-22 06:22:16,559 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2088 transitions. Word has length 72 [2020-12-22 06:22:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:16,561 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2088 transitions. [2020-12-22 06:22:16,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2088 transitions. [2020-12-22 06:22:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:22:16,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:16,567 INFO L422 BasicCegarLoop]: trace histogram [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 06:22:16,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:22:16,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1198024288, now seen corresponding path program 1 times [2020-12-22 06:22:16,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:16,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022065751] [2020-12-22 06:22:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:16,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022065751] [2020-12-22 06:22:16,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:16,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:16,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636455916] [2020-12-22 06:22:16,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:16,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:16,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:16,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:16,664 INFO L87 Difference]: Start difference. First operand 1227 states and 2088 transitions. Second operand 3 states. [2020-12-22 06:22:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:16,807 INFO L93 Difference]: Finished difference Result 3567 states and 6088 transitions. [2020-12-22 06:22:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:16,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:22:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:16,822 INFO L225 Difference]: With dead ends: 3567 [2020-12-22 06:22:16,822 INFO L226 Difference]: Without dead ends: 2371 [2020-12-22 06:22:16,826 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 06:22:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-12-22 06:22:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1434. [2020-12-22 06:22:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-12-22 06:22:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2470 transitions. [2020-12-22 06:22:16,953 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2470 transitions. Word has length 80 [2020-12-22 06:22:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:16,954 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 2470 transitions. [2020-12-22 06:22:16,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2470 transitions. [2020-12-22 06:22:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:22:16,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:16,957 INFO L422 BasicCegarLoop]: trace histogram [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 06:22:16,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:22:16,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:16,958 INFO L82 PathProgramCache]: Analyzing trace with hash -159328351, now seen corresponding path program 1 times [2020-12-22 06:22:16,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:16,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137502364] [2020-12-22 06:22:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:17,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137502364] [2020-12-22 06:22:17,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:17,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:17,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735105926] [2020-12-22 06:22:17,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:17,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:17,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:17,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:17,064 INFO L87 Difference]: Start difference. First operand 1434 states and 2470 transitions. Second operand 5 states. [2020-12-22 06:22:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:17,463 INFO L93 Difference]: Finished difference Result 4232 states and 7316 transitions. [2020-12-22 06:22:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:17,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 06:22:17,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:17,481 INFO L225 Difference]: With dead ends: 4232 [2020-12-22 06:22:17,481 INFO L226 Difference]: Without dead ends: 2829 [2020-12-22 06:22:17,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:22:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2020-12-22 06:22:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1434. [2020-12-22 06:22:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-12-22 06:22:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2468 transitions. [2020-12-22 06:22:17,601 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2468 transitions. Word has length 81 [2020-12-22 06:22:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:17,601 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 2468 transitions. [2020-12-22 06:22:17,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2468 transitions. [2020-12-22 06:22:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:22:17,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:17,604 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:17,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:22:17,604 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:17,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1920313002, now seen corresponding path program 1 times [2020-12-22 06:22:17,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:17,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664867048] [2020-12-22 06:22:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:17,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664867048] [2020-12-22 06:22:17,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:17,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:17,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80622228] [2020-12-22 06:22:17,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:17,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:17,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:17,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:17,676 INFO L87 Difference]: Start difference. First operand 1434 states and 2468 transitions. Second operand 3 states. [2020-12-22 06:22:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:17,867 INFO L93 Difference]: Finished difference Result 4230 states and 7308 transitions. [2020-12-22 06:22:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:17,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:22:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:17,884 INFO L225 Difference]: With dead ends: 4230 [2020-12-22 06:22:17,884 INFO L226 Difference]: Without dead ends: 2827 [2020-12-22 06:22:17,888 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 06:22:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-12-22 06:22:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1890. [2020-12-22 06:22:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-12-22 06:22:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3309 transitions. [2020-12-22 06:22:18,064 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3309 transitions. Word has length 82 [2020-12-22 06:22:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:18,064 INFO L481 AbstractCegarLoop]: Abstraction has 1890 states and 3309 transitions. [2020-12-22 06:22:18,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3309 transitions. [2020-12-22 06:22:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:22:18,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:18,068 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:18,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:22:18,069 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:18,069 INFO L82 PathProgramCache]: Analyzing trace with hash 814645452, now seen corresponding path program 1 times [2020-12-22 06:22:18,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:18,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957257974] [2020-12-22 06:22:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957257974] [2020-12-22 06:22:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876767184] [2020-12-22 06:22:18,149 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 06:22:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:18,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:22:18,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:22:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:18,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:22:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:22:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795497755] [2020-12-22 06:22:18,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:18,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:18,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:18,686 INFO L87 Difference]: Start difference. First operand 1890 states and 3309 transitions. Second operand 5 states. [2020-12-22 06:22:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:18,936 INFO L93 Difference]: Finished difference Result 4030 states and 6932 transitions. [2020-12-22 06:22:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:22:18,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:22:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:18,954 INFO L225 Difference]: With dead ends: 4030 [2020-12-22 06:22:18,954 INFO L226 Difference]: Without dead ends: 3093 [2020-12-22 06:22:18,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:18,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2020-12-22 06:22:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2153. [2020-12-22 06:22:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-12-22 06:22:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3788 transitions. [2020-12-22 06:22:19,155 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3788 transitions. Word has length 82 [2020-12-22 06:22:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:19,155 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3788 transitions. [2020-12-22 06:22:19,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3788 transitions. [2020-12-22 06:22:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:22:19,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:19,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:19,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:22:19,374 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:19,376 INFO L82 PathProgramCache]: Analyzing trace with hash -168015537, now seen corresponding path program 1 times [2020-12-22 06:22:19,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:19,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999125283] [2020-12-22 06:22:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:19,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999125283] [2020-12-22 06:22:19,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:19,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:19,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654552915] [2020-12-22 06:22:19,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:19,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:19,450 INFO L87 Difference]: Start difference. First operand 2153 states and 3788 transitions. Second operand 3 states. [2020-12-22 06:22:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:19,679 INFO L93 Difference]: Finished difference Result 6046 states and 10649 transitions. [2020-12-22 06:22:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:19,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:22:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:19,690 INFO L225 Difference]: With dead ends: 6046 [2020-12-22 06:22:19,691 INFO L226 Difference]: Without dead ends: 3994 [2020-12-22 06:22:19,695 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 06:22:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2020-12-22 06:22:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3057. [2020-12-22 06:22:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3057 states. [2020-12-22 06:22:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 5449 transitions. [2020-12-22 06:22:19,901 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 5449 transitions. Word has length 86 [2020-12-22 06:22:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:19,901 INFO L481 AbstractCegarLoop]: Abstraction has 3057 states and 5449 transitions. [2020-12-22 06:22:19,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 5449 transitions. [2020-12-22 06:22:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:22:19,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:19,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:19,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:22:19,908 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1969183695, now seen corresponding path program 1 times [2020-12-22 06:22:19,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:19,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143203261] [2020-12-22 06:22:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:19,984 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 06:22:19,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143203261] [2020-12-22 06:22:19,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:19,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:19,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869647894] [2020-12-22 06:22:19,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:19,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:19,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:19,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:19,987 INFO L87 Difference]: Start difference. First operand 3057 states and 5449 transitions. Second operand 3 states. [2020-12-22 06:22:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:20,363 INFO L93 Difference]: Finished difference Result 8494 states and 15151 transitions. [2020-12-22 06:22:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:20,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:22:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:20,379 INFO L225 Difference]: With dead ends: 8494 [2020-12-22 06:22:20,379 INFO L226 Difference]: Without dead ends: 5572 [2020-12-22 06:22:20,385 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 06:22:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5572 states. [2020-12-22 06:22:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5572 to 4635. [2020-12-22 06:22:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2020-12-22 06:22:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 8346 transitions. [2020-12-22 06:22:20,737 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 8346 transitions. Word has length 87 [2020-12-22 06:22:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:20,737 INFO L481 AbstractCegarLoop]: Abstraction has 4635 states and 8346 transitions. [2020-12-22 06:22:20,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 8346 transitions. [2020-12-22 06:22:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:22:20,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:20,748 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, 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 06:22:20,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:22:20,749 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -703254594, now seen corresponding path program 1 times [2020-12-22 06:22:20,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:20,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540985002] [2020-12-22 06:22:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:20,855 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 06:22:20,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540985002] [2020-12-22 06:22:20,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:20,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:20,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68101824] [2020-12-22 06:22:20,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:20,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:20,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:20,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:20,860 INFO L87 Difference]: Start difference. First operand 4635 states and 8346 transitions. Second operand 3 states. [2020-12-22 06:22:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:21,404 INFO L93 Difference]: Finished difference Result 12944 states and 23325 transitions. [2020-12-22 06:22:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:21,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:22:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:21,425 INFO L225 Difference]: With dead ends: 12944 [2020-12-22 06:22:21,426 INFO L226 Difference]: Without dead ends: 8478 [2020-12-22 06:22:21,433 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 06:22:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2020-12-22 06:22:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 7541. [2020-12-22 06:22:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7541 states. [2020-12-22 06:22:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7541 states to 7541 states and 13675 transitions. [2020-12-22 06:22:21,846 INFO L78 Accepts]: Start accepts. Automaton has 7541 states and 13675 transitions. Word has length 88 [2020-12-22 06:22:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:21,846 INFO L481 AbstractCegarLoop]: Abstraction has 7541 states and 13675 transitions. [2020-12-22 06:22:21,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7541 states and 13675 transitions. [2020-12-22 06:22:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:22:21,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:21,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:21,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:22:21,859 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1318137694, now seen corresponding path program 1 times [2020-12-22 06:22:21,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:21,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337618760] [2020-12-22 06:22:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:21,925 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 06:22:21,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337618760] [2020-12-22 06:22:21,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:21,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:21,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950612640] [2020-12-22 06:22:21,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:21,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:21,927 INFO L87 Difference]: Start difference. First operand 7541 states and 13675 transitions. Second operand 3 states. [2020-12-22 06:22:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:22,638 INFO L93 Difference]: Finished difference Result 21988 states and 39923 transitions. [2020-12-22 06:22:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:22,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:22:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:22,684 INFO L225 Difference]: With dead ends: 21988 [2020-12-22 06:22:22,685 INFO L226 Difference]: Without dead ends: 14624 [2020-12-22 06:22:22,699 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 06:22:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14624 states. [2020-12-22 06:22:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14624 to 13687. [2020-12-22 06:22:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13687 states. [2020-12-22 06:22:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13687 states to 13687 states and 24940 transitions. [2020-12-22 06:22:23,540 INFO L78 Accepts]: Start accepts. Automaton has 13687 states and 24940 transitions. Word has length 89 [2020-12-22 06:22:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:23,540 INFO L481 AbstractCegarLoop]: Abstraction has 13687 states and 24940 transitions. [2020-12-22 06:22:23,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13687 states and 24940 transitions. [2020-12-22 06:22:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:22:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:23,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:23,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:22:23,560 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash -753607633, now seen corresponding path program 1 times [2020-12-22 06:22:23,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:23,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500794104] [2020-12-22 06:22:23,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:23,634 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 06:22:23,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500794104] [2020-12-22 06:22:23,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:23,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:23,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338284801] [2020-12-22 06:22:23,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:23,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:23,637 INFO L87 Difference]: Start difference. First operand 13687 states and 24940 transitions. Second operand 3 states. [2020-12-22 06:22:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:24,972 INFO L93 Difference]: Finished difference Result 40256 states and 73417 transitions. [2020-12-22 06:22:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:24,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 06:22:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:25,067 INFO L225 Difference]: With dead ends: 40256 [2020-12-22 06:22:25,068 INFO L226 Difference]: Without dead ends: 26754 [2020-12-22 06:22:25,094 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 06:22:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26754 states. [2020-12-22 06:22:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26754 to 25817. [2020-12-22 06:22:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25817 states. [2020-12-22 06:22:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25817 states to 25817 states and 47149 transitions. [2020-12-22 06:22:26,267 INFO L78 Accepts]: Start accepts. Automaton has 25817 states and 47149 transitions. Word has length 90 [2020-12-22 06:22:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:26,267 INFO L481 AbstractCegarLoop]: Abstraction has 25817 states and 47149 transitions. [2020-12-22 06:22:26,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 25817 states and 47149 transitions. [2020-12-22 06:22:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:22:26,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:26,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:26,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:22:26,297 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash 981623151, now seen corresponding path program 1 times [2020-12-22 06:22:26,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:26,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709626556] [2020-12-22 06:22:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:26,367 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 06:22:26,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709626556] [2020-12-22 06:22:26,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:26,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:26,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862951792] [2020-12-22 06:22:26,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:26,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:26,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:26,369 INFO L87 Difference]: Start difference. First operand 25817 states and 47149 transitions. Second operand 3 states. [2020-12-22 06:22:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:28,188 INFO L93 Difference]: Finished difference Result 71285 states and 129780 transitions. [2020-12-22 06:22:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:28,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:22:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:28,317 INFO L225 Difference]: With dead ends: 71285 [2020-12-22 06:22:28,318 INFO L226 Difference]: Without dead ends: 45700 [2020-12-22 06:22:28,354 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 06:22:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45700 states. [2020-12-22 06:22:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45700 to 44763. [2020-12-22 06:22:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44763 states. [2020-12-22 06:22:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 81326 transitions. [2020-12-22 06:22:30,201 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 81326 transitions. Word has length 91 [2020-12-22 06:22:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:30,202 INFO L481 AbstractCegarLoop]: Abstraction has 44763 states and 81326 transitions. [2020-12-22 06:22:30,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 81326 transitions. [2020-12-22 06:22:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:30,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:30,227 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:30,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:22:30,228 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1719422760, now seen corresponding path program 1 times [2020-12-22 06:22:30,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:30,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874427142] [2020-12-22 06:22:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 06:22:30,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874427142] [2020-12-22 06:22:30,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:30,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:30,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904011832] [2020-12-22 06:22:30,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:30,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:30,308 INFO L87 Difference]: Start difference. First operand 44763 states and 81326 transitions. Second operand 5 states. [2020-12-22 06:22:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:34,064 INFO L93 Difference]: Finished difference Result 131898 states and 239613 transitions. [2020-12-22 06:22:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:22:34,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:22:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:34,287 INFO L225 Difference]: With dead ends: 131898 [2020-12-22 06:22:34,287 INFO L226 Difference]: Without dead ends: 87435 [2020-12-22 06:22:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:22:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87435 states. [2020-12-22 06:22:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87435 to 44763. [2020-12-22 06:22:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44763 states. [2020-12-22 06:22:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 81068 transitions. [2020-12-22 06:22:37,034 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 81068 transitions. Word has length 92 [2020-12-22 06:22:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:37,034 INFO L481 AbstractCegarLoop]: Abstraction has 44763 states and 81068 transitions. [2020-12-22 06:22:37,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 81068 transitions. [2020-12-22 06:22:37,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:37,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:37,065 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 06:22:37,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:22:37,065 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:37,066 INFO L82 PathProgramCache]: Analyzing trace with hash 613755210, now seen corresponding path program 2 times [2020-12-22 06:22:37,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:37,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083624860] [2020-12-22 06:22:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:37,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083624860] [2020-12-22 06:22:37,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:37,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:37,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544406625] [2020-12-22 06:22:37,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:37,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:37,140 INFO L87 Difference]: Start difference. First operand 44763 states and 81068 transitions. Second operand 5 states. [2020-12-22 06:22:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:38,741 INFO L93 Difference]: Finished difference Result 90157 states and 163182 transitions. [2020-12-22 06:22:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:38,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:22:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:38,819 INFO L225 Difference]: With dead ends: 90157 [2020-12-22 06:22:38,819 INFO L226 Difference]: Without dead ends: 45700 [2020-12-22 06:22:38,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 06:22:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45700 states. [2020-12-22 06:22:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45700 to 44763. [2020-12-22 06:22:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44763 states. [2020-12-22 06:22:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 80940 transitions. [2020-12-22 06:22:41,053 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 80940 transitions. Word has length 92 [2020-12-22 06:22:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:41,053 INFO L481 AbstractCegarLoop]: Abstraction has 44763 states and 80940 transitions. [2020-12-22 06:22:41,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 80940 transitions. [2020-12-22 06:22:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:41,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:41,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:41,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:22:41,071 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:41,072 INFO L82 PathProgramCache]: Analyzing trace with hash -934853507, now seen corresponding path program 1 times [2020-12-22 06:22:41,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:41,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255805677] [2020-12-22 06:22:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:41,323 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 06:22:41,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255805677] [2020-12-22 06:22:41,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:41,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:41,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433103793] [2020-12-22 06:22:41,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:41,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:41,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:41,325 INFO L87 Difference]: Start difference. First operand 44763 states and 80940 transitions. Second operand 3 states. [2020-12-22 06:22:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:44,743 INFO L93 Difference]: Finished difference Result 125783 states and 227256 transitions. [2020-12-22 06:22:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:44,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 06:22:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:44,885 INFO L225 Difference]: With dead ends: 125783 [2020-12-22 06:22:44,886 INFO L226 Difference]: Without dead ends: 81286 [2020-12-22 06:22:44,930 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 06:22:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81286 states. [2020-12-22 06:22:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81286 to 80349. [2020-12-22 06:22:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80349 states. [2020-12-22 06:22:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80349 states to 80349 states and 144941 transitions. [2020-12-22 06:22:48,654 INFO L78 Accepts]: Start accepts. Automaton has 80349 states and 144941 transitions. Word has length 92 [2020-12-22 06:22:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:48,654 INFO L481 AbstractCegarLoop]: Abstraction has 80349 states and 144941 transitions. [2020-12-22 06:22:48,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 80349 states and 144941 transitions. [2020-12-22 06:22:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:22:48,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:48,671 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:48,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:22:48,671 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1314152380, now seen corresponding path program 1 times [2020-12-22 06:22:48,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:48,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007510098] [2020-12-22 06:22:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:22:49,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007510098] [2020-12-22 06:22:49,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:49,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:22:49,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683935519] [2020-12-22 06:22:49,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:22:49,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:22:49,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:22:49,187 INFO L87 Difference]: Start difference. First operand 80349 states and 144941 transitions. Second operand 9 states. [2020-12-22 06:22:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:57,361 INFO L93 Difference]: Finished difference Result 165509 states and 297796 transitions. [2020-12-22 06:22:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:22:57,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 06:22:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:57,686 INFO L225 Difference]: With dead ends: 165509 [2020-12-22 06:22:57,686 INFO L226 Difference]: Without dead ends: 164640 [2020-12-22 06:22:57,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:22:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164640 states. [2020-12-22 06:23:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164640 to 160281. [2020-12-22 06:23:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160281 states. [2020-12-22 06:23:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160281 states to 160281 states and 289183 transitions. [2020-12-22 06:23:04,892 INFO L78 Accepts]: Start accepts. Automaton has 160281 states and 289183 transitions. Word has length 93 [2020-12-22 06:23:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 160281 states and 289183 transitions. [2020-12-22 06:23:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:23:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 160281 states and 289183 transitions. [2020-12-22 06:23:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:23:04,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:04,927 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:23:04,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:23:04,928 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:23:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2064335230, now seen corresponding path program 1 times [2020-12-22 06:23:04,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:04,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495517856] [2020-12-22 06:23:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:23:05,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495517856] [2020-12-22 06:23:05,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:05,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:23:05,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147949566] [2020-12-22 06:23:05,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:23:05,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:23:05,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:23:05,065 INFO L87 Difference]: Start difference. First operand 160281 states and 289183 transitions. Second operand 9 states. [2020-12-22 06:23:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:19,304 INFO L93 Difference]: Finished difference Result 330486 states and 594763 transitions. [2020-12-22 06:23:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 06:23:19,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-12-22 06:23:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:20,030 INFO L225 Difference]: With dead ends: 330486 [2020-12-22 06:23:20,031 INFO L226 Difference]: Without dead ends: 328948 [2020-12-22 06:23:20,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2020-12-22 06:23:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328948 states. [2020-12-22 06:23:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328948 to 320734. [2020-12-22 06:23:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320734 states. [2020-12-22 06:23:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320734 states to 320734 states and 578658 transitions. [2020-12-22 06:23:34,981 INFO L78 Accepts]: Start accepts. Automaton has 320734 states and 578658 transitions. Word has length 94 [2020-12-22 06:23:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:34,981 INFO L481 AbstractCegarLoop]: Abstraction has 320734 states and 578658 transitions. [2020-12-22 06:23:34,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:23:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 320734 states and 578658 transitions. [2020-12-22 06:23:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:23:35,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:35,060 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:23:35,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:23:35,060 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:23:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:35,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2086967484, now seen corresponding path program 1 times [2020-12-22 06:23:35,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:35,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287375081] [2020-12-22 06:23:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:23:35,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287375081] [2020-12-22 06:23:35,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:35,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:23:35,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25321716] [2020-12-22 06:23:35,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:23:35,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:35,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:23:35,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:23:35,727 INFO L87 Difference]: Start difference. First operand 320734 states and 578658 transitions. Second operand 9 states. [2020-12-22 06:23:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:49,746 INFO L93 Difference]: Finished difference Result 339762 states and 610374 transitions. [2020-12-22 06:23:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:23:49,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-12-22 06:23:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:50,599 INFO L225 Difference]: With dead ends: 339762 [2020-12-22 06:23:50,600 INFO L226 Difference]: Without dead ends: 336488 [2020-12-22 06:23:50,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:23:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336488 states. [2020-12-22 06:24:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336488 to 322408. [2020-12-22 06:24:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322408 states. [2020-12-22 06:24:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322408 states to 322408 states and 581424 transitions. [2020-12-22 06:24:08,870 INFO L78 Accepts]: Start accepts. Automaton has 322408 states and 581424 transitions. Word has length 94 [2020-12-22 06:24:08,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:24:08,870 INFO L481 AbstractCegarLoop]: Abstraction has 322408 states and 581424 transitions. [2020-12-22 06:24:08,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:24:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 322408 states and 581424 transitions. [2020-12-22 06:24:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:24:08,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:24:08,947 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:24:08,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:24:08,948 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:24:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:24:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash 936071204, now seen corresponding path program 1 times [2020-12-22 06:24:08,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:24:08,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396877653] [2020-12-22 06:24:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:24:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:24:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:24:09,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396877653] [2020-12-22 06:24:09,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:24:09,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:24:09,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252037475] [2020-12-22 06:24:09,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:24:09,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:24:09,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:24:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:24:09,108 INFO L87 Difference]: Start difference. First operand 322408 states and 581424 transitions. Second operand 5 states.