/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:21:13,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:21:13,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:21:13,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:21:13,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:21:13,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:21:13,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:21:13,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:21:13,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:21:13,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:21:13,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:21:13,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:21:13,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:21:13,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:21:13,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:21:13,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:21:13,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:21:13,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:21:13,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:21:13,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:21:13,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:21:13,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:21:13,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:21:13,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:21:13,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:21:13,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:21:13,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:21:13,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:21:13,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:21:13,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:21:13,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:21:13,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:21:13,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:21:13,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:21:13,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:21:13,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:21:13,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:21:13,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:21:13,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:21:13,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:21:13,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:21:13,462 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:21:13,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:21:13,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:21:13,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:21:13,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:21:13,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:21:13,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:21:13,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:21:13,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:21:13,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:21:13,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:21:13,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:21:13,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:21:13,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:21:13,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:21:13,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:21:13,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:21:13,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:21:13,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:21:13,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:21:13,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:21:13,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:21:13,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:21:13,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:21:13,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:21:13,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:21:13,945 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:21:13,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2020-12-22 06:21:14,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0cd2ec0/9e9ab58b232a4fd699e6af9cb89035d7/FLAGee94a9bcb [2020-12-22 06:21:14,836 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:21:14,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2020-12-22 06:21:14,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0cd2ec0/9e9ab58b232a4fd699e6af9cb89035d7/FLAGee94a9bcb [2020-12-22 06:21:14,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0cd2ec0/9e9ab58b232a4fd699e6af9cb89035d7 [2020-12-22 06:21:14,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:21:14,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:21:14,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:21:14,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:21:14,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:21:14,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:21:14" (1/1) ... [2020-12-22 06:21:14,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3883c01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:14, skipping insertion in model container [2020-12-22 06:21:14,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:21:14" (1/1) ... [2020-12-22 06:21:15,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:21:15,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:21:15,865 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_product26.cil.c[63303,63316] [2020-12-22 06:21:15,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:21:15,898 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:21:16,052 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_product26.cil.c[63303,63316] [2020-12-22 06:21:16,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:21:16,159 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:21:16,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16 WrapperNode [2020-12-22 06:21:16,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:21:16,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:21:16,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:21:16,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:21:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:21:16,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:21:16,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:21:16,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:21:16,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (1/1) ... [2020-12-22 06:21:16,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:21:16,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:21:16,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:21:16,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:21:16,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (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 06:21:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:21:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:21:16,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:21:20,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:21:20,944 INFO L299 CfgBuilder]: Removed 725 assume(true) statements. [2020-12-22 06:21:20,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:21:20 BoogieIcfgContainer [2020-12-22 06:21:20,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:21:20,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:21:20,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:21:20,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:21:20,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:21:14" (1/3) ... [2020-12-22 06:21:20,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:21:20, skipping insertion in model container [2020-12-22 06:21:20,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:16" (2/3) ... [2020-12-22 06:21:20,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:21:20, skipping insertion in model container [2020-12-22 06:21:20,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:21:20" (3/3) ... [2020-12-22 06:21:20,957 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2020-12-22 06:21:20,964 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:21:20,970 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:21:20,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:21:21,022 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:21:21,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:21:21,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:21:21,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:21:21,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:21:21,023 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:21:21,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:21:21,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:21:21,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states. [2020-12-22 06:21:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:21:21,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:21,077 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] [2020-12-22 06:21:21,077 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 06:21:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:21,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1984536039, now seen corresponding path program 1 times [2020-12-22 06:21:21,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:21,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93197211] [2020-12-22 06:21:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:21,547 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 06:21:21,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93197211] [2020-12-22 06:21:21,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:21,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:21,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959656787] [2020-12-22 06:21:21,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:21,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:21,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:21,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:21,577 INFO L87 Difference]: Start difference. First operand 1026 states. Second operand 3 states. [2020-12-22 06:21:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:21,809 INFO L93 Difference]: Finished difference Result 3043 states and 5219 transitions. [2020-12-22 06:21:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:21,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 06:21:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:21,850 INFO L225 Difference]: With dead ends: 3043 [2020-12-22 06:21:21,850 INFO L226 Difference]: Without dead ends: 1868 [2020-12-22 06:21:21,863 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 06:21:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2020-12-22 06:21:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 943. [2020-12-22 06:21:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1614 transitions. [2020-12-22 06:21:22,005 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1614 transitions. Word has length 55 [2020-12-22 06:21:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:22,005 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1614 transitions. [2020-12-22 06:21:22,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1614 transitions. [2020-12-22 06:21:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:21:22,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:22,017 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] [2020-12-22 06:21:22,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:21:22,018 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 06:21:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:22,020 INFO L82 PathProgramCache]: Analyzing trace with hash -517830424, now seen corresponding path program 1 times [2020-12-22 06:21:22,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:22,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003278635] [2020-12-22 06:21:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:22,236 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 06:21:22,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003278635] [2020-12-22 06:21:22,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:22,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:22,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787760832] [2020-12-22 06:21:22,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:22,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:22,240 INFO L87 Difference]: Start difference. First operand 943 states and 1614 transitions. Second operand 5 states. [2020-12-22 06:21:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:22,543 INFO L93 Difference]: Finished difference Result 2778 states and 4758 transitions. [2020-12-22 06:21:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:21:22,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-12-22 06:21:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:22,556 INFO L225 Difference]: With dead ends: 2778 [2020-12-22 06:21:22,557 INFO L226 Difference]: Without dead ends: 1854 [2020-12-22 06:21:22,560 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 06:21:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-12-22 06:21:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 943. [2020-12-22 06:21:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1613 transitions. [2020-12-22 06:21:22,617 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1613 transitions. Word has length 57 [2020-12-22 06:21:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:22,618 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1613 transitions. [2020-12-22 06:21:22,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1613 transitions. [2020-12-22 06:21:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:21:22,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:22,621 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] [2020-12-22 06:21:22,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:21:22,621 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 06:21:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash 451936827, now seen corresponding path program 1 times [2020-12-22 06:21:22,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:22,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892173950] [2020-12-22 06:21:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:22,774 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 06:21:22,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892173950] [2020-12-22 06:21:22,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:22,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:22,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230050048] [2020-12-22 06:21:22,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:22,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:22,777 INFO L87 Difference]: Start difference. First operand 943 states and 1613 transitions. Second operand 3 states. [2020-12-22 06:21:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:22,863 INFO L93 Difference]: Finished difference Result 1868 states and 3200 transitions. [2020-12-22 06:21:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:22,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 06:21:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:22,871 INFO L225 Difference]: With dead ends: 1868 [2020-12-22 06:21:22,871 INFO L226 Difference]: Without dead ends: 948 [2020-12-22 06:21:22,874 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 06:21:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-12-22 06:21:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 943. [2020-12-22 06:21:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1612 transitions. [2020-12-22 06:21:22,923 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1612 transitions. Word has length 58 [2020-12-22 06:21:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:22,929 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1612 transitions. [2020-12-22 06:21:22,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1612 transitions. [2020-12-22 06:21:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:21:22,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:22,931 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] [2020-12-22 06:21:22,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:21:22,932 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 06:21:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:22,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1783616459, now seen corresponding path program 1 times [2020-12-22 06:21:22,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:22,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981061992] [2020-12-22 06:21:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:23,064 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 06:21:23,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981061992] [2020-12-22 06:21:23,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:23,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:23,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089342180] [2020-12-22 06:21:23,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:23,067 INFO L87 Difference]: Start difference. First operand 943 states and 1612 transitions. Second operand 3 states. [2020-12-22 06:21:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:23,146 INFO L93 Difference]: Finished difference Result 1878 states and 3213 transitions. [2020-12-22 06:21:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:23,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:21:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:23,153 INFO L225 Difference]: With dead ends: 1878 [2020-12-22 06:21:23,153 INFO L226 Difference]: Without dead ends: 943 [2020-12-22 06:21:23,155 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 06:21:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-12-22 06:21:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2020-12-22 06:21:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1610 transitions. [2020-12-22 06:21:23,208 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1610 transitions. Word has length 59 [2020-12-22 06:21:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:23,210 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1610 transitions. [2020-12-22 06:21:23,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1610 transitions. [2020-12-22 06:21:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:21:23,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:23,214 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] [2020-12-22 06:21:23,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:21:23,216 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 06:21:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:23,217 INFO L82 PathProgramCache]: Analyzing trace with hash -314807488, now seen corresponding path program 1 times [2020-12-22 06:21:23,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:23,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201726094] [2020-12-22 06:21:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:23,375 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 06:21:23,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201726094] [2020-12-22 06:21:23,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:23,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:23,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866936867] [2020-12-22 06:21:23,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:23,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:23,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:23,381 INFO L87 Difference]: Start difference. First operand 943 states and 1610 transitions. Second operand 5 states. [2020-12-22 06:21:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:23,669 INFO L93 Difference]: Finished difference Result 2768 states and 4738 transitions. [2020-12-22 06:21:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:23,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:21:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:23,684 INFO L225 Difference]: With dead ends: 2768 [2020-12-22 06:21:23,685 INFO L226 Difference]: Without dead ends: 1852 [2020-12-22 06:21:23,690 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 06:21:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-12-22 06:21:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 943. [2020-12-22 06:21:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1609 transitions. [2020-12-22 06:21:23,753 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1609 transitions. Word has length 60 [2020-12-22 06:21:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:23,753 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1609 transitions. [2020-12-22 06:21:23,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1609 transitions. [2020-12-22 06:21:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:21:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:23,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:23,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:21:23,756 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 06:21:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1157805053, now seen corresponding path program 1 times [2020-12-22 06:21:23,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:23,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695130656] [2020-12-22 06:21:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:23,855 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 06:21:23,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695130656] [2020-12-22 06:21:23,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:23,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:23,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746208229] [2020-12-22 06:21:23,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:23,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:23,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:23,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:23,858 INFO L87 Difference]: Start difference. First operand 943 states and 1609 transitions. Second operand 5 states. [2020-12-22 06:21:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:24,117 INFO L93 Difference]: Finished difference Result 2773 states and 4743 transitions. [2020-12-22 06:21:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:24,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:21:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:24,129 INFO L225 Difference]: With dead ends: 2773 [2020-12-22 06:21:24,129 INFO L226 Difference]: Without dead ends: 1857 [2020-12-22 06:21:24,132 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 06:21:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-12-22 06:21:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 943. [2020-12-22 06:21:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-12-22 06:21:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1608 transitions. [2020-12-22 06:21:24,224 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1608 transitions. Word has length 61 [2020-12-22 06:21:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:24,224 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1608 transitions. [2020-12-22 06:21:24,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1608 transitions. [2020-12-22 06:21:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:21:24,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:24,226 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] [2020-12-22 06:21:24,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:21:24,228 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 06:21:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1524213275, now seen corresponding path program 1 times [2020-12-22 06:21:24,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:24,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421365558] [2020-12-22 06:21:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:24,342 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 06:21:24,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421365558] [2020-12-22 06:21:24,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:24,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:24,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876509594] [2020-12-22 06:21:24,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:24,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:24,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:24,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:24,344 INFO L87 Difference]: Start difference. First operand 943 states and 1608 transitions. Second operand 3 states. [2020-12-22 06:21:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:24,411 INFO L93 Difference]: Finished difference Result 1601 states and 2703 transitions. [2020-12-22 06:21:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:24,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 06:21:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:24,418 INFO L225 Difference]: With dead ends: 1601 [2020-12-22 06:21:24,418 INFO L226 Difference]: Without dead ends: 946 [2020-12-22 06:21:24,421 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 06:21:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-12-22 06:21:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 945. [2020-12-22 06:21:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-12-22 06:21:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1610 transitions. [2020-12-22 06:21:24,490 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1610 transitions. Word has length 62 [2020-12-22 06:21:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:24,492 INFO L481 AbstractCegarLoop]: Abstraction has 945 states and 1610 transitions. [2020-12-22 06:21:24,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1610 transitions. [2020-12-22 06:21:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:21:24,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:24,494 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] [2020-12-22 06:21:24,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:21:24,494 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 06:21:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1952579383, now seen corresponding path program 1 times [2020-12-22 06:21:24,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:24,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85262156] [2020-12-22 06:21:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:24,589 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 06:21:24,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85262156] [2020-12-22 06:21:24,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:24,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:24,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662049931] [2020-12-22 06:21:24,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:24,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:24,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:24,592 INFO L87 Difference]: Start difference. First operand 945 states and 1610 transitions. Second operand 3 states. [2020-12-22 06:21:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:24,710 INFO L93 Difference]: Finished difference Result 2721 states and 4654 transitions. [2020-12-22 06:21:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:24,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:21:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:24,722 INFO L225 Difference]: With dead ends: 2721 [2020-12-22 06:21:24,722 INFO L226 Difference]: Without dead ends: 1807 [2020-12-22 06:21:24,726 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 06:21:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2020-12-22 06:21:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1152. [2020-12-22 06:21:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-12-22 06:21:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1992 transitions. [2020-12-22 06:21:24,806 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1992 transitions. Word has length 70 [2020-12-22 06:21:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:24,808 INFO L481 AbstractCegarLoop]: Abstraction has 1152 states and 1992 transitions. [2020-12-22 06:21:24,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1992 transitions. [2020-12-22 06:21:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:21:24,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:24,816 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] [2020-12-22 06:21:24,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:21:24,817 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 06:21:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash -599811464, now seen corresponding path program 1 times [2020-12-22 06:21:24,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:24,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816056318] [2020-12-22 06:21:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:24,944 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 06:21:24,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816056318] [2020-12-22 06:21:24,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:24,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:24,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132840648] [2020-12-22 06:21:24,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:24,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:24,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:24,951 INFO L87 Difference]: Start difference. First operand 1152 states and 1992 transitions. Second operand 5 states. [2020-12-22 06:21:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:25,288 INFO L93 Difference]: Finished difference Result 3386 states and 5882 transitions. [2020-12-22 06:21:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:25,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:21:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:25,302 INFO L225 Difference]: With dead ends: 3386 [2020-12-22 06:21:25,302 INFO L226 Difference]: Without dead ends: 2265 [2020-12-22 06:21:25,305 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 06:21:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-12-22 06:21:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1152. [2020-12-22 06:21:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-12-22 06:21:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1990 transitions. [2020-12-22 06:21:25,395 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1990 transitions. Word has length 71 [2020-12-22 06:21:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:25,396 INFO L481 AbstractCegarLoop]: Abstraction has 1152 states and 1990 transitions. [2020-12-22 06:21:25,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1990 transitions. [2020-12-22 06:21:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:21:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:25,398 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] [2020-12-22 06:21:25,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:21:25,399 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 06:21:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2010058559, now seen corresponding path program 1 times [2020-12-22 06:21:25,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:25,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805719433] [2020-12-22 06:21:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:25,476 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 06:21:25,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805719433] [2020-12-22 06:21:25,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:25,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:25,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072593864] [2020-12-22 06:21:25,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:25,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:25,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:25,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:25,479 INFO L87 Difference]: Start difference. First operand 1152 states and 1990 transitions. Second operand 3 states. [2020-12-22 06:21:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:25,652 INFO L93 Difference]: Finished difference Result 3384 states and 5874 transitions. [2020-12-22 06:21:25,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:25,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:21:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:25,666 INFO L225 Difference]: With dead ends: 3384 [2020-12-22 06:21:25,666 INFO L226 Difference]: Without dead ends: 2263 [2020-12-22 06:21:25,669 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 06:21:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-12-22 06:21:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1608. [2020-12-22 06:21:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-12-22 06:21:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2831 transitions. [2020-12-22 06:21:25,810 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2831 transitions. Word has length 72 [2020-12-22 06:21:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:25,810 INFO L481 AbstractCegarLoop]: Abstraction has 1608 states and 2831 transitions. [2020-12-22 06:21:25,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2831 transitions. [2020-12-22 06:21:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:21:25,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:25,814 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] [2020-12-22 06:21:25,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:21:25,814 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 06:21:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:25,815 INFO L82 PathProgramCache]: Analyzing trace with hash 315338083, now seen corresponding path program 1 times [2020-12-22 06:21:25,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:25,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080758182] [2020-12-22 06:21:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:25,897 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 06:21:25,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080758182] [2020-12-22 06:21:25,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348872469] [2020-12-22 06:21:25,898 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 06:21:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:26,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:21:26,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:21:26,706 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 06:21:26,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:21:26,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:21:26,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969298143] [2020-12-22 06:21:26,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:26,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:26,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:26,708 INFO L87 Difference]: Start difference. First operand 1608 states and 2831 transitions. Second operand 5 states. [2020-12-22 06:21:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:26,966 INFO L93 Difference]: Finished difference Result 3184 states and 5498 transitions. [2020-12-22 06:21:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:21:26,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:21:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:26,983 INFO L225 Difference]: With dead ends: 3184 [2020-12-22 06:21:26,983 INFO L226 Difference]: Without dead ends: 2529 [2020-12-22 06:21:26,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 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 06:21:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-12-22 06:21:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1871. [2020-12-22 06:21:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-12-22 06:21:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 3310 transitions. [2020-12-22 06:21:27,135 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 3310 transitions. Word has length 72 [2020-12-22 06:21:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:27,136 INFO L481 AbstractCegarLoop]: Abstraction has 1871 states and 3310 transitions. [2020-12-22 06:21:27,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 3310 transitions. [2020-12-22 06:21:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:21:27,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:27,140 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] [2020-12-22 06:21:27,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:21:27,354 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 06:21:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:27,355 INFO L82 PathProgramCache]: Analyzing trace with hash 740208038, now seen corresponding path program 1 times [2020-12-22 06:21:27,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:27,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010004671] [2020-12-22 06:21:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:27,435 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 06:21:27,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010004671] [2020-12-22 06:21:27,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:27,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:27,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239010483] [2020-12-22 06:21:27,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:27,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:27,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:27,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:27,438 INFO L87 Difference]: Start difference. First operand 1871 states and 3310 transitions. Second operand 3 states. [2020-12-22 06:21:27,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:27,665 INFO L93 Difference]: Finished difference Result 5200 states and 9215 transitions. [2020-12-22 06:21:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:27,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 06:21:27,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:27,706 INFO L225 Difference]: With dead ends: 5200 [2020-12-22 06:21:27,709 INFO L226 Difference]: Without dead ends: 3430 [2020-12-22 06:21:27,717 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 06:21:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-12-22 06:21:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2775. [2020-12-22 06:21:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-12-22 06:21:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4971 transitions. [2020-12-22 06:21:27,923 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4971 transitions. Word has length 76 [2020-12-22 06:21:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:27,924 INFO L481 AbstractCegarLoop]: Abstraction has 2775 states and 4971 transitions. [2020-12-22 06:21:27,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4971 transitions. [2020-12-22 06:21:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:21:27,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:27,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:27,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:21:27,933 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 06:21:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1237393370, now seen corresponding path program 1 times [2020-12-22 06:21:27,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:27,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476744554] [2020-12-22 06:21:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:28,036 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 06:21:28,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476744554] [2020-12-22 06:21:28,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:28,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:28,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070050000] [2020-12-22 06:21:28,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:28,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:28,044 INFO L87 Difference]: Start difference. First operand 2775 states and 4971 transitions. Second operand 3 states. [2020-12-22 06:21:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:28,325 INFO L93 Difference]: Finished difference Result 7648 states and 13717 transitions. [2020-12-22 06:21:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:28,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 06:21:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:28,340 INFO L225 Difference]: With dead ends: 7648 [2020-12-22 06:21:28,341 INFO L226 Difference]: Without dead ends: 5008 [2020-12-22 06:21:28,347 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 06:21:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2020-12-22 06:21:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 4353. [2020-12-22 06:21:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4353 states. [2020-12-22 06:21:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 7868 transitions. [2020-12-22 06:21:28,695 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 7868 transitions. Word has length 77 [2020-12-22 06:21:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:28,696 INFO L481 AbstractCegarLoop]: Abstraction has 4353 states and 7868 transitions. [2020-12-22 06:21:28,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 7868 transitions. [2020-12-22 06:21:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:21:28,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:28,704 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] [2020-12-22 06:21:28,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:21:28,705 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 06:21:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:28,705 INFO L82 PathProgramCache]: Analyzing trace with hash -245300523, now seen corresponding path program 1 times [2020-12-22 06:21:28,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:28,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968266776] [2020-12-22 06:21:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:28,782 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 06:21:28,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968266776] [2020-12-22 06:21:28,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:28,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:28,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649132679] [2020-12-22 06:21:28,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:28,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:28,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:28,785 INFO L87 Difference]: Start difference. First operand 4353 states and 7868 transitions. Second operand 3 states. [2020-12-22 06:21:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:29,247 INFO L93 Difference]: Finished difference Result 12098 states and 21891 transitions. [2020-12-22 06:21:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:29,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:21:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:29,271 INFO L225 Difference]: With dead ends: 12098 [2020-12-22 06:21:29,271 INFO L226 Difference]: Without dead ends: 7914 [2020-12-22 06:21:29,280 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 06:21:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2020-12-22 06:21:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7259. [2020-12-22 06:21:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7259 states. [2020-12-22 06:21:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 13197 transitions. [2020-12-22 06:21:29,745 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 13197 transitions. Word has length 78 [2020-12-22 06:21:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:29,746 INFO L481 AbstractCegarLoop]: Abstraction has 7259 states and 13197 transitions. [2020-12-22 06:21:29,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 13197 transitions. [2020-12-22 06:21:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:21:29,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:29,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:29,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:21:29,756 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 06:21:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash 692718197, now seen corresponding path program 1 times [2020-12-22 06:21:29,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:29,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574126646] [2020-12-22 06:21:29,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:29,825 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 06:21:29,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574126646] [2020-12-22 06:21:29,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:29,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:29,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490575224] [2020-12-22 06:21:29,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:29,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:29,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:29,828 INFO L87 Difference]: Start difference. First operand 7259 states and 13197 transitions. Second operand 3 states. [2020-12-22 06:21:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:30,599 INFO L93 Difference]: Finished difference Result 21142 states and 38489 transitions. [2020-12-22 06:21:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:30,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:21:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:30,649 INFO L225 Difference]: With dead ends: 21142 [2020-12-22 06:21:30,650 INFO L226 Difference]: Without dead ends: 14060 [2020-12-22 06:21:30,668 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 06:21:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14060 states. [2020-12-22 06:21:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14060 to 13405. [2020-12-22 06:21:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13405 states. [2020-12-22 06:21:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 24462 transitions. [2020-12-22 06:21:31,459 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 24462 transitions. Word has length 79 [2020-12-22 06:21:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:31,459 INFO L481 AbstractCegarLoop]: Abstraction has 13405 states and 24462 transitions. [2020-12-22 06:21:31,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 24462 transitions. [2020-12-22 06:21:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:21:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:31,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:31,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:21:31,473 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 06:21:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1670948730, now seen corresponding path program 1 times [2020-12-22 06:21:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:31,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720330597] [2020-12-22 06:21:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:31,542 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 06:21:31,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720330597] [2020-12-22 06:21:31,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:31,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:31,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126367613] [2020-12-22 06:21:31,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:31,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:31,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:31,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:31,544 INFO L87 Difference]: Start difference. First operand 13405 states and 24462 transitions. Second operand 3 states. [2020-12-22 06:21:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:32,722 INFO L93 Difference]: Finished difference Result 39410 states and 71983 transitions. [2020-12-22 06:21:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:32,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:21:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:32,828 INFO L225 Difference]: With dead ends: 39410 [2020-12-22 06:21:32,829 INFO L226 Difference]: Without dead ends: 26190 [2020-12-22 06:21:32,857 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 06:21:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26190 states. [2020-12-22 06:21:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26190 to 25535. [2020-12-22 06:21:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25535 states. [2020-12-22 06:21:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25535 states to 25535 states and 46671 transitions. [2020-12-22 06:21:34,283 INFO L78 Accepts]: Start accepts. Automaton has 25535 states and 46671 transitions. Word has length 80 [2020-12-22 06:21:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:34,283 INFO L481 AbstractCegarLoop]: Abstraction has 25535 states and 46671 transitions. [2020-12-22 06:21:34,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25535 states and 46671 transitions. [2020-12-22 06:21:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:21:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:34,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:21:34,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:21:34,301 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 06:21:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1220439494, now seen corresponding path program 1 times [2020-12-22 06:21:34,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:34,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112587090] [2020-12-22 06:21:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:34,378 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 06:21:34,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112587090] [2020-12-22 06:21:34,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:34,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:34,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885472997] [2020-12-22 06:21:34,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:34,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:34,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:34,382 INFO L87 Difference]: Start difference. First operand 25535 states and 46671 transitions. Second operand 3 states. [2020-12-22 06:21:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:36,508 INFO L93 Difference]: Finished difference Result 70439 states and 128346 transitions. [2020-12-22 06:21:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:36,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:21:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:36,651 INFO L225 Difference]: With dead ends: 70439 [2020-12-22 06:21:36,651 INFO L226 Difference]: Without dead ends: 45136 [2020-12-22 06:21:36,694 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 06:21:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45136 states. [2020-12-22 06:21:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45136 to 44481. [2020-12-22 06:21:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44481 states. [2020-12-22 06:21:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44481 states to 44481 states and 80848 transitions. [2020-12-22 06:21:39,178 INFO L78 Accepts]: Start accepts. Automaton has 44481 states and 80848 transitions. Word has length 81 [2020-12-22 06:21:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:39,179 INFO L481 AbstractCegarLoop]: Abstraction has 44481 states and 80848 transitions. [2020-12-22 06:21:39,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 44481 states and 80848 transitions. [2020-12-22 06:21:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:21:39,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:39,207 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] [2020-12-22 06:21:39,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:21:39,208 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 06:21:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1511685823, now seen corresponding path program 1 times [2020-12-22 06:21:39,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:39,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783094396] [2020-12-22 06:21:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:39,296 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 06:21:39,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783094396] [2020-12-22 06:21:39,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:39,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:39,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274210433] [2020-12-22 06:21:39,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:39,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:39,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:39,298 INFO L87 Difference]: Start difference. First operand 44481 states and 80848 transitions. Second operand 5 states. [2020-12-22 06:21:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:42,686 INFO L93 Difference]: Finished difference Result 131052 states and 238179 transitions. [2020-12-22 06:21:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:21:42,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:21:42,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:42,894 INFO L225 Difference]: With dead ends: 131052 [2020-12-22 06:21:42,894 INFO L226 Difference]: Without dead ends: 86871 [2020-12-22 06:21:42,981 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 06:21:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86871 states. [2020-12-22 06:21:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86871 to 44481. [2020-12-22 06:21:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44481 states. [2020-12-22 06:21:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44481 states to 44481 states and 80590 transitions. [2020-12-22 06:21:45,768 INFO L78 Accepts]: Start accepts. Automaton has 44481 states and 80590 transitions. Word has length 82 [2020-12-22 06:21:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:45,768 INFO L481 AbstractCegarLoop]: Abstraction has 44481 states and 80590 transitions. [2020-12-22 06:21:45,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 44481 states and 80590 transitions. [2020-12-22 06:21:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:21:45,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:45,783 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] [2020-12-22 06:21:45,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:21:45,784 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 06:21:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:45,784 INFO L82 PathProgramCache]: Analyzing trace with hash -457884831, now seen corresponding path program 2 times [2020-12-22 06:21:45,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:45,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34476959] [2020-12-22 06:21:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:45,843 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 06:21:45,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34476959] [2020-12-22 06:21:45,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:45,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:45,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336093688] [2020-12-22 06:21:45,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:45,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:45,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:45,845 INFO L87 Difference]: Start difference. First operand 44481 states and 80590 transitions. Second operand 3 states. [2020-12-22 06:21:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:47,726 INFO L93 Difference]: Finished difference Result 89311 states and 161748 transitions. [2020-12-22 06:21:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:47,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:21:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:47,822 INFO L225 Difference]: With dead ends: 89311 [2020-12-22 06:21:47,823 INFO L226 Difference]: Without dead ends: 45136 [2020-12-22 06:21:47,868 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 06:21:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45136 states. [2020-12-22 06:21:49,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45136 to 44481. [2020-12-22 06:21:49,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44481 states. [2020-12-22 06:21:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44481 states to 44481 states and 80462 transitions. [2020-12-22 06:21:49,884 INFO L78 Accepts]: Start accepts. Automaton has 44481 states and 80462 transitions. Word has length 82 [2020-12-22 06:21:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:49,884 INFO L481 AbstractCegarLoop]: Abstraction has 44481 states and 80462 transitions. [2020-12-22 06:21:49,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 44481 states and 80462 transitions. [2020-12-22 06:21:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:21:49,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:49,900 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] [2020-12-22 06:21:49,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:21:49,900 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 06:21:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash -916247980, now seen corresponding path program 1 times [2020-12-22 06:21:49,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:49,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861117133] [2020-12-22 06:21:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:49,966 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 06:21:49,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861117133] [2020-12-22 06:21:49,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:49,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:49,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125739500] [2020-12-22 06:21:49,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:49,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:49,968 INFO L87 Difference]: Start difference. First operand 44481 states and 80462 transitions. Second operand 3 states. [2020-12-22 06:21:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:52,995 INFO L93 Difference]: Finished difference Result 124937 states and 225822 transitions. [2020-12-22 06:21:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:52,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:21:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:53,146 INFO L225 Difference]: With dead ends: 124937 [2020-12-22 06:21:53,146 INFO L226 Difference]: Without dead ends: 80722 [2020-12-22 06:21:53,190 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 06:21:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80722 states. [2020-12-22 06:21:56,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80722 to 80067. [2020-12-22 06:21:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80067 states. [2020-12-22 06:21:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80067 states to 80067 states and 144463 transitions. [2020-12-22 06:21:56,775 INFO L78 Accepts]: Start accepts. Automaton has 80067 states and 144463 transitions. Word has length 82 [2020-12-22 06:21:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:56,775 INFO L481 AbstractCegarLoop]: Abstraction has 80067 states and 144463 transitions. [2020-12-22 06:21:56,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 80067 states and 144463 transitions. [2020-12-22 06:21:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:21:56,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:56,794 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] [2020-12-22 06:21:56,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:21:56,794 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 06:21:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:56,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1486142757, now seen corresponding path program 1 times [2020-12-22 06:21:56,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:56,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349626331] [2020-12-22 06:21:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:57,097 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 06:21:57,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349626331] [2020-12-22 06:21:57,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:57,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:21:57,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072306532] [2020-12-22 06:21:57,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:21:57,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:21:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:21:57,100 INFO L87 Difference]: Start difference. First operand 80067 states and 144463 transitions. Second operand 9 states. [2020-12-22 06:22:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:04,740 INFO L93 Difference]: Finished difference Result 163547 states and 294514 transitions. [2020-12-22 06:22:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:22:04,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-12-22 06:22:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:05,078 INFO L225 Difference]: With dead ends: 163547 [2020-12-22 06:22:05,078 INFO L226 Difference]: Without dead ends: 162949 [2020-12-22 06:22:05,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:22:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162949 states. [2020-12-22 06:22:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162949 to 159789. [2020-12-22 06:22:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159789 states. [2020-12-22 06:22:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159789 states to 159789 states and 288351 transitions. [2020-12-22 06:22:11,857 INFO L78 Accepts]: Start accepts. Automaton has 159789 states and 288351 transitions. Word has length 83 [2020-12-22 06:22:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:11,857 INFO L481 AbstractCegarLoop]: Abstraction has 159789 states and 288351 transitions. [2020-12-22 06:22:11,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:22:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 159789 states and 288351 transitions. [2020-12-22 06:22:11,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:22:11,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:11,879 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] [2020-12-22 06:22:11,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:22:11,880 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 06:22:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2110338438, now seen corresponding path program 1 times [2020-12-22 06:22:11,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:11,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144813133] [2020-12-22 06:22:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:11,980 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 06:22:11,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144813133] [2020-12-22 06:22:11,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:11,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:22:11,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773920342] [2020-12-22 06:22:11,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:22:11,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:22:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:22:11,982 INFO L87 Difference]: Start difference. First operand 159789 states and 288351 transitions. Second operand 7 states. [2020-12-22 06:22:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:17,530 INFO L93 Difference]: Finished difference Result 161180 states and 290646 transitions. [2020-12-22 06:22:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:22:17,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-12-22 06:22:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:17,998 INFO L225 Difference]: With dead ends: 161180 [2020-12-22 06:22:17,998 INFO L226 Difference]: Without dead ends: 160088 [2020-12-22 06:22:18,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:22:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160088 states. [2020-12-22 06:22:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160088 to 159753. [2020-12-22 06:22:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159753 states. [2020-12-22 06:22:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159753 states to 159753 states and 288270 transitions. [2020-12-22 06:22:25,320 INFO L78 Accepts]: Start accepts. Automaton has 159753 states and 288270 transitions. Word has length 84 [2020-12-22 06:22:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:25,321 INFO L481 AbstractCegarLoop]: Abstraction has 159753 states and 288270 transitions. [2020-12-22 06:22:25,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:22:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 159753 states and 288270 transitions. [2020-12-22 06:22:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:22:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:25,340 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] [2020-12-22 06:22:25,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:22:25,340 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 06:22:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1884394736, now seen corresponding path program 1 times [2020-12-22 06:22:25,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:25,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065642498] [2020-12-22 06:22:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:25,466 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 06:22:25,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065642498] [2020-12-22 06:22:25,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:25,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:22:25,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295943779] [2020-12-22 06:22:25,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:22:25,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:25,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:22:25,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:22:25,468 INFO L87 Difference]: Start difference. First operand 159753 states and 288270 transitions. Second operand 9 states. [2020-12-22 06:22:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:32,955 INFO L93 Difference]: Finished difference Result 165321 states and 297414 transitions. [2020-12-22 06:22:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:22:32,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-12-22 06:22:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:33,300 INFO L225 Difference]: With dead ends: 165321 [2020-12-22 06:22:33,300 INFO L226 Difference]: Without dead ends: 164349 [2020-12-22 06:22:33,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:22:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164349 states. [2020-12-22 06:22:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164349 to 160233. [2020-12-22 06:22:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160233 states. [2020-12-22 06:22:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160233 states to 160233 states and 289057 transitions. [2020-12-22 06:22:40,509 INFO L78 Accepts]: Start accepts. Automaton has 160233 states and 289057 transitions. Word has length 84 [2020-12-22 06:22:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:40,509 INFO L481 AbstractCegarLoop]: Abstraction has 160233 states and 289057 transitions. [2020-12-22 06:22:40,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:22:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 160233 states and 289057 transitions. [2020-12-22 06:22:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:22:40,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:40,534 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] [2020-12-22 06:22:40,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:22:40,535 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 06:22:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash -795667877, now seen corresponding path program 1 times [2020-12-22 06:22:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:40,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891266476] [2020-12-22 06:22:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:40,697 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 06:22:40,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891266476] [2020-12-22 06:22:40,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:40,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:22:40,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094571657] [2020-12-22 06:22:40,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:22:40,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:40,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:22:40,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:22:40,700 INFO L87 Difference]: Start difference. First operand 160233 states and 289057 transitions. Second operand 11 states. [2020-12-22 06:22:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:49,926 INFO L93 Difference]: Finished difference Result 167690 states and 301354 transitions. [2020-12-22 06:22:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 06:22:49,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-12-22 06:22:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:50,267 INFO L225 Difference]: With dead ends: 167690 [2020-12-22 06:22:50,268 INFO L226 Difference]: Without dead ends: 166391 [2020-12-22 06:22:50,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=466, Invalid=1340, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 06:22:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166391 states. [2020-12-22 06:22:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166391 to 160532. [2020-12-22 06:22:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160532 states. [2020-12-22 06:22:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160532 states to 160532 states and 289551 transitions. [2020-12-22 06:22:57,733 INFO L78 Accepts]: Start accepts. Automaton has 160532 states and 289551 transitions. Word has length 85 [2020-12-22 06:22:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:57,734 INFO L481 AbstractCegarLoop]: Abstraction has 160532 states and 289551 transitions. [2020-12-22 06:22:57,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:22:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 160532 states and 289551 transitions. [2020-12-22 06:22:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:22:57,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:57,759 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] [2020-12-22 06:22:57,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:22:57,760 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 06:22:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1056877695, now seen corresponding path program 1 times [2020-12-22 06:22:57,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:57,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230691624] [2020-12-22 06:22:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:57,877 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 06:22:57,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230691624] [2020-12-22 06:22:57,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:57,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:22:57,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531644802] [2020-12-22 06:22:57,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:22:57,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:22:57,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:22:57,880 INFO L87 Difference]: Start difference. First operand 160532 states and 289551 transitions. Second operand 8 states. [2020-12-22 06:23:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:03,574 INFO L93 Difference]: Finished difference Result 163041 states and 293674 transitions. [2020-12-22 06:23:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 06:23:03,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-12-22 06:23:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:04,021 INFO L225 Difference]: With dead ends: 163041 [2020-12-22 06:23:04,021 INFO L226 Difference]: Without dead ends: 161145 [2020-12-22 06:23:04,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-12-22 06:23:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161145 states. [2020-12-22 06:23:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161145 to 160305. [2020-12-22 06:23:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160305 states. [2020-12-22 06:23:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160305 states to 160305 states and 289153 transitions. [2020-12-22 06:23:12,733 INFO L78 Accepts]: Start accepts. Automaton has 160305 states and 289153 transitions. Word has length 85 [2020-12-22 06:23:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:12,733 INFO L481 AbstractCegarLoop]: Abstraction has 160305 states and 289153 transitions. [2020-12-22 06:23:12,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:23:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 160305 states and 289153 transitions. [2020-12-22 06:23:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:23:12,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:12,767 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] [2020-12-22 06:23:12,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:23:12,767 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 06:23:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash 236672372, now seen corresponding path program 1 times [2020-12-22 06:23:12,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:12,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638681160] [2020-12-22 06:23:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:12,875 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 06:23:12,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638681160] [2020-12-22 06:23:12,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:12,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:23:12,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634832786] [2020-12-22 06:23:12,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:23:12,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:12,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:23:12,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:23:12,877 INFO L87 Difference]: Start difference. First operand 160305 states and 289153 transitions. Second operand 5 states. [2020-12-22 06:23:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:20,336 INFO L93 Difference]: Finished difference Result 170696 states and 306172 transitions. [2020-12-22 06:23:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:23:20,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:23:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:20,673 INFO L225 Difference]: With dead ends: 170696 [2020-12-22 06:23:20,673 INFO L226 Difference]: Without dead ends: 169332 [2020-12-22 06:23:20,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:23:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169332 states. [2020-12-22 06:23:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169332 to 161956. [2020-12-22 06:23:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161956 states. [2020-12-22 06:23:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161956 states to 161956 states and 291811 transitions. [2020-12-22 06:23:28,298 INFO L78 Accepts]: Start accepts. Automaton has 161956 states and 291811 transitions. Word has length 86 [2020-12-22 06:23:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:28,299 INFO L481 AbstractCegarLoop]: Abstraction has 161956 states and 291811 transitions. [2020-12-22 06:23:28,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:23:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 161956 states and 291811 transitions. [2020-12-22 06:23:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:23:28,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:28,640 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] [2020-12-22 06:23:28,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:23:28,640 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 06:23:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1251305666, now seen corresponding path program 1 times [2020-12-22 06:23:28,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517619557] [2020-12-22 06:23:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:28,727 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 06:23:28,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517619557] [2020-12-22 06:23:28,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:28,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:23:28,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112924672] [2020-12-22 06:23:28,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:23:28,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:28,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:23:28,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:23:28,729 INFO L87 Difference]: Start difference. First operand 161956 states and 291811 transitions. Second operand 5 states. [2020-12-22 06:23:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:35,759 INFO L93 Difference]: Finished difference Result 170644 states and 306177 transitions. [2020-12-22 06:23:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:23:35,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-12-22 06:23:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:36,272 INFO L225 Difference]: With dead ends: 170644 [2020-12-22 06:23:36,272 INFO L226 Difference]: Without dead ends: 170618 [2020-12-22 06:23:36,316 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 06:23:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170618 states. [2020-12-22 06:23:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170618 to 161994. [2020-12-22 06:23:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161994 states. [2020-12-22 06:23:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161994 states to 161994 states and 291843 transitions. [2020-12-22 06:23:43,770 INFO L78 Accepts]: Start accepts. Automaton has 161994 states and 291843 transitions. Word has length 87 [2020-12-22 06:23:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:43,770 INFO L481 AbstractCegarLoop]: Abstraction has 161994 states and 291843 transitions. [2020-12-22 06:23:43,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:23:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 161994 states and 291843 transitions. [2020-12-22 06:23:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:23:43,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:43,811 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] [2020-12-22 06:23:43,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:23:43,811 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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 06:23:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash 404448323, now seen corresponding path program 1 times [2020-12-22 06:23:43,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:43,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899850093] [2020-12-22 06:23:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:44,306 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 06:23:44,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899850093] [2020-12-22 06:23:44,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:23:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344823041] [2020-12-22 06:23:44,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:23:44,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:44,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:23:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:23:44,309 INFO L87 Difference]: Start difference. First operand 161994 states and 291843 transitions. Second operand 11 states. [2020-12-22 06:23:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:51,219 INFO L93 Difference]: Finished difference Result 167352 states and 300494 transitions. [2020-12-22 06:23:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 06:23:51,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-12-22 06:23:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:51,551 INFO L225 Difference]: With dead ends: 167352 [2020-12-22 06:23:51,552 INFO L226 Difference]: Without dead ends: 164244 [2020-12-22 06:23:51,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2020-12-22 06:23:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164244 states. [2020-12-22 06:23:58,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164244 to 161914. [2020-12-22 06:23:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161914 states. [2020-12-22 06:23:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161914 states to 161914 states and 291683 transitions. [2020-12-22 06:23:59,003 INFO L78 Accepts]: Start accepts. Automaton has 161914 states and 291683 transitions. Word has length 87 [2020-12-22 06:23:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:59,003 INFO L481 AbstractCegarLoop]: Abstraction has 161914 states and 291683 transitions. [2020-12-22 06:23:59,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:23:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 161914 states and 291683 transitions. [2020-12-22 06:23:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:23:59,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:59,362 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] [2020-12-22 06:23:59,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:23:59,362 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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 06:23:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:59,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1359015341, now seen corresponding path program 1 times [2020-12-22 06:23:59,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:59,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278842042] [2020-12-22 06:23:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:59,434 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 06:23:59,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278842042] [2020-12-22 06:23:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:59,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:23:59,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636395437] [2020-12-22 06:23:59,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:23:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:23:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:23:59,437 INFO L87 Difference]: Start difference. First operand 161914 states and 291683 transitions. Second operand 4 states. [2020-12-22 06:24:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:24:06,112 INFO L93 Difference]: Finished difference Result 170627 states and 305541 transitions. [2020-12-22 06:24:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:24:06,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 06:24:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:24:06,600 INFO L225 Difference]: With dead ends: 170627 [2020-12-22 06:24:06,600 INFO L226 Difference]: Without dead ends: 167414 [2020-12-22 06:24:06,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:24:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167414 states. [2020-12-22 06:24:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167414 to 161964. [2020-12-22 06:24:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161964 states. [2020-12-22 06:24:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161964 states to 161964 states and 291733 transitions. [2020-12-22 06:24:14,205 INFO L78 Accepts]: Start accepts. Automaton has 161964 states and 291733 transitions. Word has length 89 [2020-12-22 06:24:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:24:14,206 INFO L481 AbstractCegarLoop]: Abstraction has 161964 states and 291733 transitions. [2020-12-22 06:24:14,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:24:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 161964 states and 291733 transitions. [2020-12-22 06:24:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:24:14,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:24:14,232 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] [2020-12-22 06:24:14,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:24:14,233 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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 06:24:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:24:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1549748561, now seen corresponding path program 1 times [2020-12-22 06:24:14,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:24:14,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167326153] [2020-12-22 06:24:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:24:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:24:14,350 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 06:24:14,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167326153] [2020-12-22 06:24:14,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:24:14,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:24:14,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534633964] [2020-12-22 06:24:14,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:24:14,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:24:14,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:24:14,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:24:14,352 INFO L87 Difference]: Start difference. First operand 161964 states and 291733 transitions. Second operand 9 states. [2020-12-22 06:24:15,157 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-22 06:24:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:24:31,152 INFO L93 Difference]: Finished difference Result 340425 states and 609956 transitions. [2020-12-22 06:24:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 06:24:31,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-12-22 06:24:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:24:31,986 INFO L225 Difference]: With dead ends: 340425 [2020-12-22 06:24:31,986 INFO L226 Difference]: Without dead ends: 337269 [2020-12-22 06:24:32,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2020-12-22 06:24:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337269 states. [2020-12-22 06:24:47,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337269 to 324632. [2020-12-22 06:24:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324632 states. [2020-12-22 06:24:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324632 states to 324632 states and 584508 transitions. [2020-12-22 06:24:48,526 INFO L78 Accepts]: Start accepts. Automaton has 324632 states and 584508 transitions. Word has length 89 [2020-12-22 06:24:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:24:48,526 INFO L481 AbstractCegarLoop]: Abstraction has 324632 states and 584508 transitions. [2020-12-22 06:24:48,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:24:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 324632 states and 584508 transitions. [2020-12-22 06:24:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:24:48,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:24:48,561 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] [2020-12-22 06:24:48,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:24:48,562 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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 06:24:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:24:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash -30267596, now seen corresponding path program 1 times [2020-12-22 06:24:48,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:24:48,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099362301] [2020-12-22 06:24:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:24:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:24:48,650 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 06:24:48,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099362301] [2020-12-22 06:24:48,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:24:48,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:24:48,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296507426] [2020-12-22 06:24:48,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:24:48,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:24:48,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:24:48,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:24:48,653 INFO L87 Difference]: Start difference. First operand 324632 states and 584508 transitions. Second operand 4 states.