/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:09:58,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:09:58,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:09:58,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:09:58,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:09:58,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:09:58,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:09:58,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:09:58,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:09:58,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:09:58,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:09:58,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:09:58,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:09:58,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:09:58,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:09:58,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:09:58,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:09:58,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:09:58,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:09:58,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:09:58,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:09:58,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:09:58,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:09:58,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:09:58,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:09:58,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:09:58,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:09:58,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:09:58,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:09:58,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:09:58,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:09:58,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:09:58,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:09:58,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:09:58,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:09:58,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:09:58,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:09:58,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:09:58,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:09:58,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:09:58,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:09:58,568 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:09:58,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:09:58,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:09:58,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:09:58,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:09:58,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:09:58,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:09:58,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:09:58,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:09:58,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:09:58,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:09:58,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:09:58,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:09:58,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:09:58,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:09:58,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:09:58,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:09:58,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:09:58,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:09:58,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:09:58,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:09:58,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:09:59,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:09:59,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:09:59,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:09:59,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:09:59,118 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:09:59,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2020-12-22 06:09:59,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7f58e01/2a53c9f9ce4641719f65e5f51512c8c4/FLAGf26b4f421 [2020-12-22 06:10:00,076 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:00,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2020-12-22 06:10:00,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7f58e01/2a53c9f9ce4641719f65e5f51512c8c4/FLAGf26b4f421 [2020-12-22 06:10:00,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7f58e01/2a53c9f9ce4641719f65e5f51512c8c4 [2020-12-22 06:10:00,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:00,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:00,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:00,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:00,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:00,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:00" (1/1) ... [2020-12-22 06:10:00,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24134a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:00, skipping insertion in model container [2020-12-22 06:10:00,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:00" (1/1) ... [2020-12-22 06:10:00,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:00,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:01,049 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_product21.cil.c[62096,62109] [2020-12-22 06:10:01,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:01,183 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:01,351 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_product21.cil.c[62096,62109] [2020-12-22 06:10:01,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:01,429 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:01,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01 WrapperNode [2020-12-22 06:10:01,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:01,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:01,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:01,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:01,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:01,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:02,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:02,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:02,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:02,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:02,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (1/1) ... [2020-12-22 06:10:03,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:03,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:03,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:03,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:03,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (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 06:10:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:03,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:10:21,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:10:21,754 INFO L299 CfgBuilder]: Removed 1897 assume(true) statements. [2020-12-22 06:10:21,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:21 BoogieIcfgContainer [2020-12-22 06:10:21,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:10:21,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:10:21,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:10:21,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:10:21,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:00" (1/3) ... [2020-12-22 06:10:21,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d75639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:21, skipping insertion in model container [2020-12-22 06:10:21,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:01" (2/3) ... [2020-12-22 06:10:21,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d75639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:21, skipping insertion in model container [2020-12-22 06:10:21,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:21" (3/3) ... [2020-12-22 06:10:21,775 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2020-12-22 06:10:21,781 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:10:21,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:10:21,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:10:21,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:10:21,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:10:21,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:10:21,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:10:21,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:10:21,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:10:21,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:10:21,870 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:10:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8708 states. [2020-12-22 06:10:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:10:22,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:22,021 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] [2020-12-22 06:10:22,021 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 06:10:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1830845599, now seen corresponding path program 1 times [2020-12-22 06:10:22,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:22,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761026946] [2020-12-22 06:10:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:22,578 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 06:10:22,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761026946] [2020-12-22 06:10:22,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:22,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:22,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513518008] [2020-12-22 06:10:22,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:22,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:22,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:22,613 INFO L87 Difference]: Start difference. First operand 8708 states. Second operand 4 states. [2020-12-22 06:10:24,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:24,187 INFO L93 Difference]: Finished difference Result 34657 states and 65569 transitions. [2020-12-22 06:10:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:24,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:10:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:24,402 INFO L225 Difference]: With dead ends: 34657 [2020-12-22 06:10:24,402 INFO L226 Difference]: Without dead ends: 25962 [2020-12-22 06:10:24,435 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 06:10:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25962 states. [2020-12-22 06:10:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25962 to 8716. [2020-12-22 06:10:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8716 states. [2020-12-22 06:10:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 16468 transitions. [2020-12-22 06:10:25,001 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 16468 transitions. Word has length 46 [2020-12-22 06:10:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:25,002 INFO L481 AbstractCegarLoop]: Abstraction has 8716 states and 16468 transitions. [2020-12-22 06:10:25,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 16468 transitions. [2020-12-22 06:10:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:10:25,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:25,008 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 06:10:25,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:10:25,009 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 06:10:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash 618919074, now seen corresponding path program 1 times [2020-12-22 06:10:25,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:25,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091375930] [2020-12-22 06:10:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:25,175 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 06:10:25,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091375930] [2020-12-22 06:10:25,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:25,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:10:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073813237] [2020-12-22 06:10:25,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:10:25,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:25,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:10:25,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:10:25,186 INFO L87 Difference]: Start difference. First operand 8716 states and 16468 transitions. Second operand 3 states. [2020-12-22 06:10:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:25,544 INFO L93 Difference]: Finished difference Result 17348 states and 32783 transitions. [2020-12-22 06:10:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:10:25,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 06:10:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:25,573 INFO L225 Difference]: With dead ends: 17348 [2020-12-22 06:10:25,573 INFO L226 Difference]: Without dead ends: 8646 [2020-12-22 06:10:25,590 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 06:10:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-12-22 06:10:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2020-12-22 06:10:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-12-22 06:10:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16328 transitions. [2020-12-22 06:10:25,879 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16328 transitions. Word has length 47 [2020-12-22 06:10:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:25,879 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 16328 transitions. [2020-12-22 06:10:25,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:10:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16328 transitions. [2020-12-22 06:10:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:10:25,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:25,885 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] [2020-12-22 06:10:25,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:10:25,886 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 06:10:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1351060519, now seen corresponding path program 1 times [2020-12-22 06:10:25,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:25,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172406858] [2020-12-22 06:10:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:26,053 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 06:10:26,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172406858] [2020-12-22 06:10:26,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:26,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:26,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700832871] [2020-12-22 06:10:26,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:26,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:26,057 INFO L87 Difference]: Start difference. First operand 8646 states and 16328 transitions. Second operand 4 states. [2020-12-22 06:10:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:26,679 INFO L93 Difference]: Finished difference Result 17266 states and 32619 transitions. [2020-12-22 06:10:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:26,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:10:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:26,705 INFO L225 Difference]: With dead ends: 17266 [2020-12-22 06:10:26,705 INFO L226 Difference]: Without dead ends: 8646 [2020-12-22 06:10:26,733 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 06:10:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-12-22 06:10:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2020-12-22 06:10:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-12-22 06:10:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16326 transitions. [2020-12-22 06:10:26,998 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16326 transitions. Word has length 50 [2020-12-22 06:10:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:27,005 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 16326 transitions. [2020-12-22 06:10:27,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16326 transitions. [2020-12-22 06:10:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:10:27,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:27,010 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 06:10:27,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:10:27,010 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 06:10:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1132790932, now seen corresponding path program 1 times [2020-12-22 06:10:27,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:27,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124366245] [2020-12-22 06:10:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:27,103 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 06:10:27,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124366245] [2020-12-22 06:10:27,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:27,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:27,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490949896] [2020-12-22 06:10:27,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:27,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:27,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:27,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:27,106 INFO L87 Difference]: Start difference. First operand 8646 states and 16326 transitions. Second operand 4 states. [2020-12-22 06:10:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:27,518 INFO L93 Difference]: Finished difference Result 17266 states and 32616 transitions. [2020-12-22 06:10:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:27,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:10:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:27,548 INFO L225 Difference]: With dead ends: 17266 [2020-12-22 06:10:27,548 INFO L226 Difference]: Without dead ends: 8646 [2020-12-22 06:10:27,565 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 06:10:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-12-22 06:10:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2020-12-22 06:10:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-12-22 06:10:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16324 transitions. [2020-12-22 06:10:27,823 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16324 transitions. Word has length 51 [2020-12-22 06:10:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 16324 transitions. [2020-12-22 06:10:27,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16324 transitions. [2020-12-22 06:10:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:10:27,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:27,826 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 06:10:27,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:10:27,827 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 06:10:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1655267284, now seen corresponding path program 1 times [2020-12-22 06:10:27,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:27,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939843102] [2020-12-22 06:10:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:27,957 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 06:10:27,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939843102] [2020-12-22 06:10:27,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:27,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:27,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198034476] [2020-12-22 06:10:27,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:27,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:27,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:27,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:27,962 INFO L87 Difference]: Start difference. First operand 8646 states and 16324 transitions. Second operand 4 states. [2020-12-22 06:10:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:28,350 INFO L93 Difference]: Finished difference Result 17266 states and 32613 transitions. [2020-12-22 06:10:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:28,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:10:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:28,379 INFO L225 Difference]: With dead ends: 17266 [2020-12-22 06:10:28,379 INFO L226 Difference]: Without dead ends: 8646 [2020-12-22 06:10:28,394 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 06:10:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-12-22 06:10:28,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2020-12-22 06:10:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-12-22 06:10:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16322 transitions. [2020-12-22 06:10:28,867 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16322 transitions. Word has length 52 [2020-12-22 06:10:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:28,868 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 16322 transitions. [2020-12-22 06:10:28,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16322 transitions. [2020-12-22 06:10:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:10:28,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:28,873 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 06:10:28,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:10:28,874 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 06:10:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:28,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1504657711, now seen corresponding path program 1 times [2020-12-22 06:10:28,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:28,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385872047] [2020-12-22 06:10:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:28,977 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 06:10:28,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385872047] [2020-12-22 06:10:28,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:28,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:28,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237489556] [2020-12-22 06:10:28,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:28,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:28,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:28,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:28,982 INFO L87 Difference]: Start difference. First operand 8646 states and 16322 transitions. Second operand 4 states. [2020-12-22 06:10:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:29,520 INFO L93 Difference]: Finished difference Result 17266 states and 32610 transitions. [2020-12-22 06:10:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:29,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:10:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:29,543 INFO L225 Difference]: With dead ends: 17266 [2020-12-22 06:10:29,543 INFO L226 Difference]: Without dead ends: 8646 [2020-12-22 06:10:29,558 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 06:10:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-12-22 06:10:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8646. [2020-12-22 06:10:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-12-22 06:10:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 16320 transitions. [2020-12-22 06:10:29,850 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 16320 transitions. Word has length 53 [2020-12-22 06:10:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:29,850 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 16320 transitions. [2020-12-22 06:10:29,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 16320 transitions. [2020-12-22 06:10:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:10:29,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:29,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:29,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:10:29,854 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 06:10:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:29,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1963220943, now seen corresponding path program 1 times [2020-12-22 06:10:29,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:29,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194930342] [2020-12-22 06:10:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:29,964 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 06:10:29,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194930342] [2020-12-22 06:10:29,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:29,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:29,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036333327] [2020-12-22 06:10:29,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:29,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:29,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:29,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:29,968 INFO L87 Difference]: Start difference. First operand 8646 states and 16320 transitions. Second operand 5 states. [2020-12-22 06:10:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:31,777 INFO L93 Difference]: Finished difference Result 24347 states and 45831 transitions. [2020-12-22 06:10:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:10:31,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 06:10:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:31,811 INFO L225 Difference]: With dead ends: 24347 [2020-12-22 06:10:31,811 INFO L226 Difference]: Without dead ends: 15771 [2020-12-22 06:10:31,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:10:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15771 states. [2020-12-22 06:10:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15771 to 15306. [2020-12-22 06:10:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15306 states. [2020-12-22 06:10:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15306 states to 15306 states and 28906 transitions. [2020-12-22 06:10:32,479 INFO L78 Accepts]: Start accepts. Automaton has 15306 states and 28906 transitions. Word has length 54 [2020-12-22 06:10:32,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:32,480 INFO L481 AbstractCegarLoop]: Abstraction has 15306 states and 28906 transitions. [2020-12-22 06:10:32,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand 15306 states and 28906 transitions. [2020-12-22 06:10:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:10:32,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:32,483 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 06:10:32,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:10:32,483 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 06:10:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:32,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1663512598, now seen corresponding path program 1 times [2020-12-22 06:10:32,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:32,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232303523] [2020-12-22 06:10:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:32,616 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 06:10:32,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232303523] [2020-12-22 06:10:32,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:32,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:32,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444479831] [2020-12-22 06:10:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:32,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:32,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:32,620 INFO L87 Difference]: Start difference. First operand 15306 states and 28906 transitions. Second operand 5 states. [2020-12-22 06:10:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:39,089 INFO L93 Difference]: Finished difference Result 126003 states and 238043 transitions. [2020-12-22 06:10:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:10:39,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 06:10:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:39,489 INFO L225 Difference]: With dead ends: 126003 [2020-12-22 06:10:39,489 INFO L226 Difference]: Without dead ends: 110767 [2020-12-22 06:10:39,740 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 06:10:39,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110767 states. [2020-12-22 06:10:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110767 to 28257. [2020-12-22 06:10:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28257 states. [2020-12-22 06:10:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28257 states to 28257 states and 53251 transitions. [2020-12-22 06:10:41,719 INFO L78 Accepts]: Start accepts. Automaton has 28257 states and 53251 transitions. Word has length 54 [2020-12-22 06:10:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:41,719 INFO L481 AbstractCegarLoop]: Abstraction has 28257 states and 53251 transitions. [2020-12-22 06:10:41,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28257 states and 53251 transitions. [2020-12-22 06:10:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:10:41,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:41,722 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 06:10:41,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:10:41,722 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 06:10:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 57118417, now seen corresponding path program 1 times [2020-12-22 06:10:41,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:41,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634764446] [2020-12-22 06:10:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:41,970 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 06:10:41,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634764446] [2020-12-22 06:10:41,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:41,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:10:41,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809064845] [2020-12-22 06:10:41,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:10:41,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:41,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:10:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:10:41,980 INFO L87 Difference]: Start difference. First operand 28257 states and 53251 transitions. Second operand 3 states. [2020-12-22 06:10:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:44,317 INFO L93 Difference]: Finished difference Result 83771 states and 157877 transitions. [2020-12-22 06:10:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:10:44,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:10:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:44,433 INFO L225 Difference]: With dead ends: 83771 [2020-12-22 06:10:44,434 INFO L226 Difference]: Without dead ends: 55546 [2020-12-22 06:10:44,474 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 06:10:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55546 states. [2020-12-22 06:10:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55546 to 28133. [2020-12-22 06:10:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28133 states. [2020-12-22 06:10:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28133 states to 28133 states and 53003 transitions. [2020-12-22 06:10:46,003 INFO L78 Accepts]: Start accepts. Automaton has 28133 states and 53003 transitions. Word has length 56 [2020-12-22 06:10:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:46,004 INFO L481 AbstractCegarLoop]: Abstraction has 28133 states and 53003 transitions. [2020-12-22 06:10:46,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:10:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 28133 states and 53003 transitions. [2020-12-22 06:10:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:10:46,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:46,007 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 06:10:46,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:10:46,008 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 06:10:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash -570965804, now seen corresponding path program 1 times [2020-12-22 06:10:46,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:46,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218154333] [2020-12-22 06:10:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:46,110 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 06:10:46,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218154333] [2020-12-22 06:10:46,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:46,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:46,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264164628] [2020-12-22 06:10:46,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:46,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:46,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:46,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:46,113 INFO L87 Difference]: Start difference. First operand 28133 states and 53003 transitions. Second operand 5 states. [2020-12-22 06:10:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:51,533 INFO L93 Difference]: Finished difference Result 65579 states and 123379 transitions. [2020-12-22 06:10:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:10:51,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:10:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:51,602 INFO L225 Difference]: With dead ends: 65579 [2020-12-22 06:10:51,602 INFO L226 Difference]: Without dead ends: 37480 [2020-12-22 06:10:51,625 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 06:10:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37480 states. [2020-12-22 06:10:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37480 to 37062. [2020-12-22 06:10:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-12-22 06:10:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 68624 transitions. [2020-12-22 06:10:53,241 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 68624 transitions. Word has length 56 [2020-12-22 06:10:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:53,241 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 68624 transitions. [2020-12-22 06:10:53,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 68624 transitions. [2020-12-22 06:10:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:10:53,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:53,244 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 06:10:53,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:10:53,244 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 06:10:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2145089138, now seen corresponding path program 1 times [2020-12-22 06:10:53,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:53,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115292075] [2020-12-22 06:10:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:53,324 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 06:10:53,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115292075] [2020-12-22 06:10:53,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:53,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:53,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902055597] [2020-12-22 06:10:53,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:53,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:53,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:53,327 INFO L87 Difference]: Start difference. First operand 37062 states and 68624 transitions. Second operand 5 states. [2020-12-22 06:10:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:56,717 INFO L93 Difference]: Finished difference Result 109932 states and 203651 transitions. [2020-12-22 06:10:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:56,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:10:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:56,826 INFO L225 Difference]: With dead ends: 109932 [2020-12-22 06:10:56,827 INFO L226 Difference]: Without dead ends: 72910 [2020-12-22 06:10:56,868 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 06:10:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72910 states. [2020-12-22 06:10:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72910 to 37062. [2020-12-22 06:10:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-12-22 06:10:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 68513 transitions. [2020-12-22 06:10:58,558 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 68513 transitions. Word has length 60 [2020-12-22 06:10:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:58,558 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 68513 transitions. [2020-12-22 06:10:58,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:10:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 68513 transitions. [2020-12-22 06:10:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:10:58,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:58,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:58,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:10:58,560 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 06:10:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:58,561 INFO L82 PathProgramCache]: Analyzing trace with hash 435175991, now seen corresponding path program 1 times [2020-12-22 06:10:58,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:58,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952598011] [2020-12-22 06:10:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:58,651 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 06:10:58,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952598011] [2020-12-22 06:10:58,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:58,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:58,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536016048] [2020-12-22 06:10:58,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:58,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:58,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:58,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:58,653 INFO L87 Difference]: Start difference. First operand 37062 states and 68513 transitions. Second operand 5 states. [2020-12-22 06:11:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:10,998 INFO L93 Difference]: Finished difference Result 314330 states and 582282 transitions. [2020-12-22 06:11:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:10,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:11:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:11,699 INFO L225 Difference]: With dead ends: 314330 [2020-12-22 06:11:11,699 INFO L226 Difference]: Without dead ends: 277327 [2020-12-22 06:11:11,806 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 06:11:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277327 states. [2020-12-22 06:11:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277327 to 70780. [2020-12-22 06:11:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70780 states. [2020-12-22 06:11:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70780 states to 70780 states and 130617 transitions. [2020-12-22 06:11:16,321 INFO L78 Accepts]: Start accepts. Automaton has 70780 states and 130617 transitions. Word has length 61 [2020-12-22 06:11:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:16,321 INFO L481 AbstractCegarLoop]: Abstraction has 70780 states and 130617 transitions. [2020-12-22 06:11:16,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 70780 states and 130617 transitions. [2020-12-22 06:11:16,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:11:16,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:16,323 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] [2020-12-22 06:11:16,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:11:16,324 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 06:11:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:16,324 INFO L82 PathProgramCache]: Analyzing trace with hash 959450895, now seen corresponding path program 1 times [2020-12-22 06:11:16,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:16,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463682900] [2020-12-22 06:11:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:16,394 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 06:11:16,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463682900] [2020-12-22 06:11:16,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:16,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:16,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718521249] [2020-12-22 06:11:16,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:16,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:16,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:16,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:16,397 INFO L87 Difference]: Start difference. First operand 70780 states and 130617 transitions. Second operand 3 states. [2020-12-22 06:11:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:22,003 INFO L93 Difference]: Finished difference Result 210153 states and 388111 transitions. [2020-12-22 06:11:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:22,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 06:11:22,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:22,303 INFO L225 Difference]: With dead ends: 210153 [2020-12-22 06:11:22,304 INFO L226 Difference]: Without dead ends: 139410 [2020-12-22 06:11:22,539 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 06:11:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139410 states. [2020-12-22 06:11:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139410 to 70526. [2020-12-22 06:11:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70526 states. [2020-12-22 06:11:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70526 states to 70526 states and 130116 transitions. [2020-12-22 06:11:25,863 INFO L78 Accepts]: Start accepts. Automaton has 70526 states and 130116 transitions. Word has length 63 [2020-12-22 06:11:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:25,863 INFO L481 AbstractCegarLoop]: Abstraction has 70526 states and 130116 transitions. [2020-12-22 06:11:25,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 70526 states and 130116 transitions. [2020-12-22 06:11:25,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:11:25,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:25,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:25,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:11:25,866 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 06:11:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2000926921, now seen corresponding path program 1 times [2020-12-22 06:11:25,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:25,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990798989] [2020-12-22 06:11:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:25,928 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 06:11:25,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990798989] [2020-12-22 06:11:25,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:25,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:25,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484226164] [2020-12-22 06:11:25,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:25,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:25,930 INFO L87 Difference]: Start difference. First operand 70526 states and 130116 transitions. Second operand 3 states. [2020-12-22 06:11:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:31,674 INFO L93 Difference]: Finished difference Result 209652 states and 387138 transitions. [2020-12-22 06:11:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:31,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 06:11:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:31,932 INFO L225 Difference]: With dead ends: 209652 [2020-12-22 06:11:31,932 INFO L226 Difference]: Without dead ends: 139169 [2020-12-22 06:11:32,004 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 06:11:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139169 states. [2020-12-22 06:11:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139169 to 70414. [2020-12-22 06:11:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70414 states. [2020-12-22 06:11:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70414 states to 70414 states and 129780 transitions. [2020-12-22 06:11:35,649 INFO L78 Accepts]: Start accepts. Automaton has 70414 states and 129780 transitions. Word has length 67 [2020-12-22 06:11:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:35,649 INFO L481 AbstractCegarLoop]: Abstraction has 70414 states and 129780 transitions. [2020-12-22 06:11:35,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 70414 states and 129780 transitions. [2020-12-22 06:11:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:11:35,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:35,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:35,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:11:35,651 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 06:11:35,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:35,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1270582706, now seen corresponding path program 1 times [2020-12-22 06:11:35,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:35,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228596413] [2020-12-22 06:11:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:35,748 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 06:11:35,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228596413] [2020-12-22 06:11:35,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:35,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:35,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637233066] [2020-12-22 06:11:35,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:35,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:35,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:35,750 INFO L87 Difference]: Start difference. First operand 70414 states and 129780 transitions. Second operand 5 states. [2020-12-22 06:11:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:56,968 INFO L93 Difference]: Finished difference Result 591575 states and 1093253 transitions. [2020-12-22 06:11:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:56,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:11:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:58,305 INFO L225 Difference]: With dead ends: 591575 [2020-12-22 06:11:58,306 INFO L226 Difference]: Without dead ends: 521215 [2020-12-22 06:11:58,470 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 06:11:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521215 states. [2020-12-22 06:12:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521215 to 136814. [2020-12-22 06:12:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136814 states. [2020-12-22 06:12:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136814 states to 136814 states and 251764 transitions. [2020-12-22 06:12:08,219 INFO L78 Accepts]: Start accepts. Automaton has 136814 states and 251764 transitions. Word has length 68 [2020-12-22 06:12:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:08,220 INFO L481 AbstractCegarLoop]: Abstraction has 136814 states and 251764 transitions. [2020-12-22 06:12:08,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 136814 states and 251764 transitions. [2020-12-22 06:12:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:12:08,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:08,225 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, 1, 1, 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 06:12:08,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:12:08,226 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 06:12:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1863720802, now seen corresponding path program 1 times [2020-12-22 06:12:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:08,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849317717] [2020-12-22 06:12:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:08,305 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 06:12:08,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849317717] [2020-12-22 06:12:08,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:08,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:08,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058084552] [2020-12-22 06:12:08,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:08,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:08,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:08,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:08,310 INFO L87 Difference]: Start difference. First operand 136814 states and 251764 transitions. Second operand 3 states.