/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/elevator_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:12:10,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:12:10,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:12:11,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:12:11,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:12:11,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:12:11,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:12:11,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:12:11,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:12:11,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:12:11,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:12:11,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:12:11,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:12:11,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:12:11,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:12:11,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:12:11,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:12:11,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:12:11,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:12:11,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:12:11,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:12:11,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:12:11,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:12:11,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:12:11,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:12:11,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:12:11,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:12:11,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:12:11,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:12:11,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:12:11,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:12:11,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:12:11,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:12:11,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:12:11,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:12:11,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:12:11,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:12:11,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:12:11,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:12:11,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:12:11,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:12:11,145 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:12:11,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:12:11,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:12:11,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:12:11,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:12:11,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:12:11,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:12:11,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:12:11,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:12:11,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:12:11,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:12:11,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:12:11,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:12:11,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:12:11,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:12:11,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:12:11,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:12:11,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:12:11,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:12:11,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:12:11,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:12:11,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:12:11,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:12:11,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:12:11,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:12:11,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:12:11,690 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:12:11,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2020-12-22 06:12:11,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92efc24e/0ac7d94d445241e9a58846dfb287e57d/FLAG02a386df6 [2020-12-22 06:12:12,778 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:12:12,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product31.cil.c [2020-12-22 06:12:12,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92efc24e/0ac7d94d445241e9a58846dfb287e57d/FLAG02a386df6 [2020-12-22 06:12:12,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92efc24e/0ac7d94d445241e9a58846dfb287e57d [2020-12-22 06:12:12,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:12:12,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:12:12,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:12,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:12:12,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:12:12,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:12" (1/1) ... [2020-12-22 06:12:12,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ccc69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:12, skipping insertion in model container [2020-12-22 06:12:12,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:12" (1/1) ... [2020-12-22 06:12:12,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:12:13,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:12:13,229 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/elevator_spec3_product31.cil.c[1221,1234] [2020-12-22 06:12:13,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:13,859 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:12:13,884 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/elevator_spec3_product31.cil.c[1221,1234] [2020-12-22 06:12:14,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:14,256 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:12:14,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14 WrapperNode [2020-12-22 06:12:14,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:14,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:14,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:12:14,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:12:14,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:14,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:14,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:14,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:12:14,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:12:14,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:12:14,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:14,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:15,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:15,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:15,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:15,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:15,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (1/1) ... [2020-12-22 06:12:16,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:12:16,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:12:16,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:12:16,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:12:16,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (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 06:12:16,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:12:16,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:12:16,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:12:16,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:12:35,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:12:35,693 INFO L299 CfgBuilder]: Removed 2197 assume(true) statements. [2020-12-22 06:12:35,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:35 BoogieIcfgContainer [2020-12-22 06:12:35,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:12:35,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:12:35,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:12:35,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:12:35,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:12:12" (1/3) ... [2020-12-22 06:12:35,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e3f8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:35, skipping insertion in model container [2020-12-22 06:12:35,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:14" (2/3) ... [2020-12-22 06:12:35,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e3f8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:35, skipping insertion in model container [2020-12-22 06:12:35,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:35" (3/3) ... [2020-12-22 06:12:35,716 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2020-12-22 06:12:35,724 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:12:35,733 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:12:35,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:12:35,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:12:35,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:12:35,821 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:12:35,821 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:12:35,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:12:35,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:12:35,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:12:35,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:12:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9253 states. [2020-12-22 06:12:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:12:35,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:35,989 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] [2020-12-22 06:12:35,990 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:35,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1223980468, now seen corresponding path program 1 times [2020-12-22 06:12:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:36,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562573392] [2020-12-22 06:12:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:36,510 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 06:12:36,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562573392] [2020-12-22 06:12:36,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:36,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:36,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821955042] [2020-12-22 06:12:36,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:36,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:36,538 INFO L87 Difference]: Start difference. First operand 9253 states. Second operand 4 states. [2020-12-22 06:12:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:38,173 INFO L93 Difference]: Finished difference Result 36837 states and 69329 transitions. [2020-12-22 06:12:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:38,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:12:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:38,607 INFO L225 Difference]: With dead ends: 36837 [2020-12-22 06:12:38,607 INFO L226 Difference]: Without dead ends: 27597 [2020-12-22 06:12:38,653 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 06:12:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27597 states. [2020-12-22 06:12:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27597 to 9261. [2020-12-22 06:12:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9261 states. [2020-12-22 06:12:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 17408 transitions. [2020-12-22 06:12:39,219 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 17408 transitions. Word has length 47 [2020-12-22 06:12:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:39,219 INFO L481 AbstractCegarLoop]: Abstraction has 9261 states and 17408 transitions. [2020-12-22 06:12:39,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 17408 transitions. [2020-12-22 06:12:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:12:39,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:39,225 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] [2020-12-22 06:12:39,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:12:39,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:39,229 INFO L82 PathProgramCache]: Analyzing trace with hash -142725997, now seen corresponding path program 1 times [2020-12-22 06:12:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:39,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665412224] [2020-12-22 06:12:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:39,467 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 06:12:39,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665412224] [2020-12-22 06:12:39,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:39,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:39,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793087134] [2020-12-22 06:12:39,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:39,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:39,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:39,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:39,474 INFO L87 Difference]: Start difference. First operand 9261 states and 17408 transitions. Second operand 3 states. [2020-12-22 06:12:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:39,809 INFO L93 Difference]: Finished difference Result 18438 states and 34663 transitions. [2020-12-22 06:12:39,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:39,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:12:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:39,841 INFO L225 Difference]: With dead ends: 18438 [2020-12-22 06:12:39,842 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 06:12:39,861 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 06:12:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 06:12:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2020-12-22 06:12:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-12-22 06:12:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17268 transitions. [2020-12-22 06:12:40,248 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17268 transitions. Word has length 48 [2020-12-22 06:12:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:40,250 INFO L481 AbstractCegarLoop]: Abstraction has 9191 states and 17268 transitions. [2020-12-22 06:12:40,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17268 transitions. [2020-12-22 06:12:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:12:40,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:40,255 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] [2020-12-22 06:12:40,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:12:40,257 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:40,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:40,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1082551236, now seen corresponding path program 1 times [2020-12-22 06:12:40,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:40,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833406603] [2020-12-22 06:12:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:40,394 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 06:12:40,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833406603] [2020-12-22 06:12:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:40,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167338948] [2020-12-22 06:12:40,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:40,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:40,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:40,400 INFO L87 Difference]: Start difference. First operand 9191 states and 17268 transitions. Second operand 4 states. [2020-12-22 06:12:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:40,828 INFO L93 Difference]: Finished difference Result 18356 states and 34499 transitions. [2020-12-22 06:12:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:40,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:12:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:41,022 INFO L225 Difference]: With dead ends: 18356 [2020-12-22 06:12:41,023 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 06:12:41,047 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 06:12:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 06:12:41,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2020-12-22 06:12:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-12-22 06:12:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17266 transitions. [2020-12-22 06:12:41,303 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17266 transitions. Word has length 51 [2020-12-22 06:12:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:41,311 INFO L481 AbstractCegarLoop]: Abstraction has 9191 states and 17266 transitions. [2020-12-22 06:12:41,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17266 transitions. [2020-12-22 06:12:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:12:41,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:41,315 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] [2020-12-22 06:12:41,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:12:41,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1392567583, now seen corresponding path program 1 times [2020-12-22 06:12:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:41,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970709312] [2020-12-22 06:12:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:41,544 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 06:12:41,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970709312] [2020-12-22 06:12:41,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:41,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:41,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779304762] [2020-12-22 06:12:41,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:41,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:41,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:41,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:41,549 INFO L87 Difference]: Start difference. First operand 9191 states and 17266 transitions. Second operand 4 states. [2020-12-22 06:12:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:41,927 INFO L93 Difference]: Finished difference Result 18356 states and 34496 transitions. [2020-12-22 06:12:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:41,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:12:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:41,955 INFO L225 Difference]: With dead ends: 18356 [2020-12-22 06:12:41,955 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 06:12:41,972 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 06:12:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 06:12:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2020-12-22 06:12:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-12-22 06:12:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17264 transitions. [2020-12-22 06:12:42,343 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17264 transitions. Word has length 52 [2020-12-22 06:12:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:42,343 INFO L481 AbstractCegarLoop]: Abstraction has 9191 states and 17264 transitions. [2020-12-22 06:12:42,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17264 transitions. [2020-12-22 06:12:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:12:42,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:42,346 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] [2020-12-22 06:12:42,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:12:42,346 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:42,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1919297441, now seen corresponding path program 1 times [2020-12-22 06:12:42,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:42,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925415143] [2020-12-22 06:12:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:42,424 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 06:12:42,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925415143] [2020-12-22 06:12:42,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:42,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:42,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579833389] [2020-12-22 06:12:42,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:42,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:42,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:42,427 INFO L87 Difference]: Start difference. First operand 9191 states and 17264 transitions. Second operand 4 states. [2020-12-22 06:12:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:42,948 INFO L93 Difference]: Finished difference Result 18356 states and 34493 transitions. [2020-12-22 06:12:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:42,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:12:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:42,981 INFO L225 Difference]: With dead ends: 18356 [2020-12-22 06:12:42,982 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 06:12:43,000 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 06:12:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 06:12:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2020-12-22 06:12:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-12-22 06:12:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17262 transitions. [2020-12-22 06:12:43,270 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17262 transitions. Word has length 53 [2020-12-22 06:12:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:43,270 INFO L481 AbstractCegarLoop]: Abstraction has 9191 states and 17262 transitions. [2020-12-22 06:12:43,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17262 transitions. [2020-12-22 06:12:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:12:43,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:43,275 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] [2020-12-22 06:12:43,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:12:43,275 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1545367974, now seen corresponding path program 1 times [2020-12-22 06:12:43,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:43,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526804051] [2020-12-22 06:12:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:43,470 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 06:12:43,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526804051] [2020-12-22 06:12:43,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:43,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:43,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799688470] [2020-12-22 06:12:43,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:43,474 INFO L87 Difference]: Start difference. First operand 9191 states and 17262 transitions. Second operand 4 states. [2020-12-22 06:12:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:43,953 INFO L93 Difference]: Finished difference Result 18356 states and 34490 transitions. [2020-12-22 06:12:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:43,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:12:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:43,981 INFO L225 Difference]: With dead ends: 18356 [2020-12-22 06:12:43,981 INFO L226 Difference]: Without dead ends: 9191 [2020-12-22 06:12:43,997 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 06:12:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-12-22 06:12:44,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9191. [2020-12-22 06:12:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-12-22 06:12:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 17260 transitions. [2020-12-22 06:12:44,439 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 17260 transitions. Word has length 54 [2020-12-22 06:12:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:44,440 INFO L481 AbstractCegarLoop]: Abstraction has 9191 states and 17260 transitions. [2020-12-22 06:12:44,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 17260 transitions. [2020-12-22 06:12:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:12:44,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:44,442 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 06:12:44,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:12:44,443 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:44,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1419041018, now seen corresponding path program 1 times [2020-12-22 06:12:44,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:44,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875762306] [2020-12-22 06:12:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:44,567 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 06:12:44,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875762306] [2020-12-22 06:12:44,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:44,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:12:44,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719986460] [2020-12-22 06:12:44,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:12:44,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:12:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:12:44,570 INFO L87 Difference]: Start difference. First operand 9191 states and 17260 transitions. Second operand 7 states. [2020-12-22 06:12:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:47,098 INFO L93 Difference]: Finished difference Result 32874 states and 61654 transitions. [2020-12-22 06:12:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:12:47,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-12-22 06:12:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:47,157 INFO L225 Difference]: With dead ends: 32874 [2020-12-22 06:12:47,157 INFO L226 Difference]: Without dead ends: 23753 [2020-12-22 06:12:47,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:12:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23753 states. [2020-12-22 06:12:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 16279. [2020-12-22 06:12:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16279 states. [2020-12-22 06:12:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16279 states to 16279 states and 30582 transitions. [2020-12-22 06:12:48,058 INFO L78 Accepts]: Start accepts. Automaton has 16279 states and 30582 transitions. Word has length 55 [2020-12-22 06:12:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:48,058 INFO L481 AbstractCegarLoop]: Abstraction has 16279 states and 30582 transitions. [2020-12-22 06:12:48,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:12:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 16279 states and 30582 transitions. [2020-12-22 06:12:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:12:48,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:48,061 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 06:12:48,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:12:48,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2116336203, now seen corresponding path program 1 times [2020-12-22 06:12:48,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:48,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820923747] [2020-12-22 06:12:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:48,137 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 06:12:48,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820923747] [2020-12-22 06:12:48,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:48,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:48,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199645388] [2020-12-22 06:12:48,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:48,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:48,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:48,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:48,140 INFO L87 Difference]: Start difference. First operand 16279 states and 30582 transitions. Second operand 5 states. [2020-12-22 06:12:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:55,142 INFO L93 Difference]: Finished difference Result 133576 states and 250999 transitions. [2020-12-22 06:12:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:55,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:12:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:55,484 INFO L225 Difference]: With dead ends: 133576 [2020-12-22 06:12:55,484 INFO L226 Difference]: Without dead ends: 117367 [2020-12-22 06:12:55,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:12:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117367 states. [2020-12-22 06:12:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117367 to 29987. [2020-12-22 06:12:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29987 states. [2020-12-22 06:12:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29987 states to 29987 states and 56231 transitions. [2020-12-22 06:12:57,745 INFO L78 Accepts]: Start accepts. Automaton has 29987 states and 56231 transitions. Word has length 55 [2020-12-22 06:12:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 29987 states and 56231 transitions. [2020-12-22 06:12:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 29987 states and 56231 transitions. [2020-12-22 06:12:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:12:57,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:57,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:12:57,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:12:57,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash -328888753, now seen corresponding path program 1 times [2020-12-22 06:12:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:57,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920528441] [2020-12-22 06:12:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:57,960 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 06:12:57,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920528441] [2020-12-22 06:12:57,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:57,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:57,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975330518] [2020-12-22 06:12:57,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:57,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:57,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:57,963 INFO L87 Difference]: Start difference. First operand 29987 states and 56231 transitions. Second operand 3 states. [2020-12-22 06:13:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:00,579 INFO L93 Difference]: Finished difference Result 88801 states and 166497 transitions. [2020-12-22 06:13:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:00,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:13:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:00,693 INFO L225 Difference]: With dead ends: 88801 [2020-12-22 06:13:00,693 INFO L226 Difference]: Without dead ends: 58846 [2020-12-22 06:13:00,730 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 06:13:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58846 states. [2020-12-22 06:13:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58846 to 29863. [2020-12-22 06:13:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29863 states. [2020-12-22 06:13:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29863 states to 29863 states and 55983 transitions. [2020-12-22 06:13:02,268 INFO L78 Accepts]: Start accepts. Automaton has 29863 states and 55983 transitions. Word has length 56 [2020-12-22 06:13:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:02,268 INFO L481 AbstractCegarLoop]: Abstraction has 29863 states and 55983 transitions. [2020-12-22 06:13:02,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 29863 states and 55983 transitions. [2020-12-22 06:13:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:13:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:02,270 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] [2020-12-22 06:13:02,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:13:02,271 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash -956972974, now seen corresponding path program 1 times [2020-12-22 06:13:02,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:02,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330426207] [2020-12-22 06:13:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:13:02,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330426207] [2020-12-22 06:13:02,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:02,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:02,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974737717] [2020-12-22 06:13:02,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:02,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:02,370 INFO L87 Difference]: Start difference. First operand 29863 states and 55983 transitions. Second operand 5 states. [2020-12-22 06:13:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:08,536 INFO L93 Difference]: Finished difference Result 69802 states and 130655 transitions. [2020-12-22 06:13:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:13:08,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:13:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:08,589 INFO L225 Difference]: With dead ends: 69802 [2020-12-22 06:13:08,589 INFO L226 Difference]: Without dead ends: 39973 [2020-12-22 06:13:08,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:13:08,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39973 states. [2020-12-22 06:13:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39973 to 39555. [2020-12-22 06:13:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39555 states. [2020-12-22 06:13:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39555 states to 39555 states and 72920 transitions. [2020-12-22 06:13:10,163 INFO L78 Accepts]: Start accepts. Automaton has 39555 states and 72920 transitions. Word has length 56 [2020-12-22 06:13:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:10,163 INFO L481 AbstractCegarLoop]: Abstraction has 39555 states and 72920 transitions. [2020-12-22 06:13:10,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 39555 states and 72920 transitions. [2020-12-22 06:13:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:13:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:10,166 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 06:13:10,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:13:10,166 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1244318349, now seen corresponding path program 1 times [2020-12-22 06:13:10,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:10,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714855882] [2020-12-22 06:13:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:10,254 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 06:13:10,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714855882] [2020-12-22 06:13:10,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:10,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:10,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457752004] [2020-12-22 06:13:10,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:10,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:10,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:10,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:10,257 INFO L87 Difference]: Start difference. First operand 39555 states and 72920 transitions. Second operand 5 states. [2020-12-22 06:13:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:14,302 INFO L93 Difference]: Finished difference Result 117086 states and 215914 transitions. [2020-12-22 06:13:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:14,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-22 06:13:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:14,431 INFO L225 Difference]: With dead ends: 117086 [2020-12-22 06:13:14,431 INFO L226 Difference]: Without dead ends: 77571 [2020-12-22 06:13:14,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 06:13:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77571 states. [2020-12-22 06:13:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77571 to 39555. [2020-12-22 06:13:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39555 states. [2020-12-22 06:13:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39555 states to 39555 states and 72809 transitions. [2020-12-22 06:13:16,268 INFO L78 Accepts]: Start accepts. Automaton has 39555 states and 72809 transitions. Word has length 59 [2020-12-22 06:13:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:16,268 INFO L481 AbstractCegarLoop]: Abstraction has 39555 states and 72809 transitions. [2020-12-22 06:13:16,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39555 states and 72809 transitions. [2020-12-22 06:13:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:13:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:16,270 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 06:13:16,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:13:16,270 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1715118834, now seen corresponding path program 1 times [2020-12-22 06:13:16,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:16,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165905518] [2020-12-22 06:13:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:16,345 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 06:13:16,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165905518] [2020-12-22 06:13:16,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:16,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:16,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139479964] [2020-12-22 06:13:16,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:16,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:16,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:16,348 INFO L87 Difference]: Start difference. First operand 39555 states and 72809 transitions. Second operand 5 states. [2020-12-22 06:13:29,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:29,211 INFO L93 Difference]: Finished difference Result 334284 states and 616425 transitions. [2020-12-22 06:13:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:29,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:13:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:30,012 INFO L225 Difference]: With dead ends: 334284 [2020-12-22 06:13:30,012 INFO L226 Difference]: Without dead ends: 294788 [2020-12-22 06:13:30,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:13:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294788 states. [2020-12-22 06:13:34,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294788 to 75441. [2020-12-22 06:13:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75441 states. [2020-12-22 06:13:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75441 states to 75441 states and 138649 transitions. [2020-12-22 06:13:34,747 INFO L78 Accepts]: Start accepts. Automaton has 75441 states and 138649 transitions. Word has length 60 [2020-12-22 06:13:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:34,747 INFO L481 AbstractCegarLoop]: Abstraction has 75441 states and 138649 transitions. [2020-12-22 06:13:34,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 75441 states and 138649 transitions. [2020-12-22 06:13:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:13:34,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:34,749 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 06:13:34,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:13:34,750 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash 40476504, now seen corresponding path program 1 times [2020-12-22 06:13:34,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:34,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371336686] [2020-12-22 06:13:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:34,824 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 06:13:34,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371336686] [2020-12-22 06:13:34,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:34,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:34,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925022184] [2020-12-22 06:13:34,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:34,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:34,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:34,827 INFO L87 Difference]: Start difference. First operand 75441 states and 138649 transitions. Second operand 3 states. [2020-12-22 06:13:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:41,552 INFO L93 Difference]: Finished difference Result 223706 states and 411347 transitions. [2020-12-22 06:13:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:41,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:13:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:41,968 INFO L225 Difference]: With dead ends: 223706 [2020-12-22 06:13:41,968 INFO L226 Difference]: Without dead ends: 148302 [2020-12-22 06:13:42,036 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 06:13:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148302 states. [2020-12-22 06:13:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148302 to 75187. [2020-12-22 06:13:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75187 states. [2020-12-22 06:13:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75187 states to 75187 states and 138148 transitions. [2020-12-22 06:13:45,735 INFO L78 Accepts]: Start accepts. Automaton has 75187 states and 138148 transitions. Word has length 61 [2020-12-22 06:13:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:45,735 INFO L481 AbstractCegarLoop]: Abstraction has 75187 states and 138148 transitions. [2020-12-22 06:13:45,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75187 states and 138148 transitions. [2020-12-22 06:13:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:13:45,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:45,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:13:45,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:13:45,738 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:45,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1190162322, now seen corresponding path program 1 times [2020-12-22 06:13:45,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:45,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781353379] [2020-12-22 06:13:45,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:45,807 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 06:13:45,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781353379] [2020-12-22 06:13:45,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:45,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:45,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477691027] [2020-12-22 06:13:45,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:45,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:45,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:45,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:45,810 INFO L87 Difference]: Start difference. First operand 75187 states and 138148 transitions. Second operand 3 states. [2020-12-22 06:13:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:52,006 INFO L93 Difference]: Finished difference Result 223205 states and 410374 transitions. [2020-12-22 06:13:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:52,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:13:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:52,262 INFO L225 Difference]: With dead ends: 223205 [2020-12-22 06:13:52,262 INFO L226 Difference]: Without dead ends: 148061 [2020-12-22 06:13:52,339 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 06:13:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148061 states. [2020-12-22 06:13:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148061 to 75075. [2020-12-22 06:13:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75075 states. [2020-12-22 06:13:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75075 states to 75075 states and 137812 transitions. [2020-12-22 06:13:56,054 INFO L78 Accepts]: Start accepts. Automaton has 75075 states and 137812 transitions. Word has length 65 [2020-12-22 06:13:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:56,054 INFO L481 AbstractCegarLoop]: Abstraction has 75075 states and 137812 transitions. [2020-12-22 06:13:56,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 75075 states and 137812 transitions. [2020-12-22 06:13:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:13:56,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:56,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:13:56,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:13:56,057 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:56,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1241879877, now seen corresponding path program 1 times [2020-12-22 06:13:56,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:56,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607269557] [2020-12-22 06:13:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:56,132 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 06:13:56,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607269557] [2020-12-22 06:13:56,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:56,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:56,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654445940] [2020-12-22 06:13:56,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:56,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:56,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:56,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:56,134 INFO L87 Difference]: Start difference. First operand 75075 states and 137812 transitions. Second operand 5 states. [2020-12-22 06:14:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:19,936 INFO L93 Difference]: Finished difference Result 635640 states and 1169885 transitions. [2020-12-22 06:14:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:14:19,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 06:14:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:21,622 INFO L225 Difference]: With dead ends: 635640 [2020-12-22 06:14:21,623 INFO L226 Difference]: Without dead ends: 560619 [2020-12-22 06:14:21,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:14:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560619 states. [2020-12-22 06:14:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560619 to 145811. [2020-12-22 06:14:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145811 states. [2020-12-22 06:14:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145811 states to 145811 states and 267268 transitions. [2020-12-22 06:14:35,231 INFO L78 Accepts]: Start accepts. Automaton has 145811 states and 267268 transitions. Word has length 66 [2020-12-22 06:14:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:35,232 INFO L481 AbstractCegarLoop]: Abstraction has 145811 states and 267268 transitions. [2020-12-22 06:14:35,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 145811 states and 267268 transitions. [2020-12-22 06:14:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:14:35,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:35,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:35,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:14:35,235 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:35,235 INFO L82 PathProgramCache]: Analyzing trace with hash -634123860, now seen corresponding path program 1 times [2020-12-22 06:14:35,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:35,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258346450] [2020-12-22 06:14:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:35,356 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 06:14:35,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258346450] [2020-12-22 06:14:35,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:35,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:35,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176127719] [2020-12-22 06:14:35,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:35,360 INFO L87 Difference]: Start difference. First operand 145811 states and 267268 transitions. Second operand 3 states.