/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_spec1_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:58:58,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:58:58,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:58:58,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:58:58,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:58:58,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:58:58,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:58:58,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:58:58,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:58:58,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:58:58,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:58:58,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:58:58,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:58:58,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:58:58,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:58:58,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:58:58,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:58:58,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:58:58,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:58:58,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:58:58,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:58:58,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:58:58,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:58:58,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:58:58,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:58:58,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:58:58,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:58:58,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:58:58,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:58:58,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:58:58,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:58:58,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:58:58,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:58:58,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:58:58,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:58:58,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:58:58,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:58:58,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:58:58,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:58:58,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:58:58,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:58:58,726 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:58:58,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:58:58,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:58:58,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:58:58,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:58:58,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:58:58,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:58:58,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:58:58,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:58:58,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:58:58,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:58:58,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:58:58,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:58:58,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:58,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:58:58,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:58:58,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:58:58,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:58:58,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:58:58,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:58:58,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:58:58,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:58:59,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:58:59,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:58:59,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:58:59,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:58:59,194 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:58:59,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2020-12-22 05:58:59,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b83fd31/fc2638b8d34043189e1b73f0c180c841/FLAGdbc6e2471 [2020-12-22 05:59:00,012 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:00,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2020-12-22 05:59:00,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b83fd31/fc2638b8d34043189e1b73f0c180c841/FLAGdbc6e2471 [2020-12-22 05:59:00,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b83fd31/fc2638b8d34043189e1b73f0c180c841 [2020-12-22 05:59:00,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:00,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:00,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:00,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:00,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:00,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:00" (1/1) ... [2020-12-22 05:59:00,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190b378f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:00, skipping insertion in model container [2020-12-22 05:59:00,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:00" (1/1) ... [2020-12-22 05:59:00,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:00,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:00,728 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_spec1_product17.cil.c[27146,27159] [2020-12-22 05:59:00,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:00,992 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:01,144 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_spec1_product17.cil.c[27146,27159] [2020-12-22 05:59:01,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:01,275 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:01,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01 WrapperNode [2020-12-22 05:59:01,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:01,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:01,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:01,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:01,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:01,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:01,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:01,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:01,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (1/1) ... [2020-12-22 05:59:01,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:01,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:01,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:01,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:01,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (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 05:59:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:59:07,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:59:07,451 INFO L299 CfgBuilder]: Removed 541 assume(true) statements. [2020-12-22 05:59:07,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:07 BoogieIcfgContainer [2020-12-22 05:59:07,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:59:07,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:59:07,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:59:07,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:59:07,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:00" (1/3) ... [2020-12-22 05:59:07,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40901d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:07, skipping insertion in model container [2020-12-22 05:59:07,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:01" (2/3) ... [2020-12-22 05:59:07,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40901d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:07, skipping insertion in model container [2020-12-22 05:59:07,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:07" (3/3) ... [2020-12-22 05:59:07,465 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2020-12-22 05:59:07,472 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:59:07,481 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:59:07,501 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:59:07,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:59:07,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:59:07,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:59:07,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:59:07,542 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:59:07,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:59:07,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:59:07,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:59:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states. [2020-12-22 05:59:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:59:07,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:07,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:07,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1455721413, now seen corresponding path program 1 times [2020-12-22 05:59:07,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:07,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072351647] [2020-12-22 05:59:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:08,085 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 05:59:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072351647] [2020-12-22 05:59:08,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:08,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:08,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891755024] [2020-12-22 05:59:08,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:08,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:08,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:08,112 INFO L87 Difference]: Start difference. First operand 2403 states. Second operand 3 states. [2020-12-22 05:59:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:08,430 INFO L93 Difference]: Finished difference Result 7129 states and 13475 transitions. [2020-12-22 05:59:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:08,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 05:59:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:08,512 INFO L225 Difference]: With dead ends: 7129 [2020-12-22 05:59:08,513 INFO L226 Difference]: Without dead ends: 4731 [2020-12-22 05:59:08,529 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 05:59:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-12-22 05:59:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 2399. [2020-12-22 05:59:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-12-22 05:59:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4522 transitions. [2020-12-22 05:59:08,746 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4522 transitions. Word has length 47 [2020-12-22 05:59:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:08,747 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 4522 transitions. [2020-12-22 05:59:08,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4522 transitions. [2020-12-22 05:59:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:59:08,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:08,752 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 05:59:08,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:59:08,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1074641241, now seen corresponding path program 1 times [2020-12-22 05:59:08,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:08,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464818568] [2020-12-22 05:59:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:08,954 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 05:59:08,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464818568] [2020-12-22 05:59:08,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:08,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:08,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638942588] [2020-12-22 05:59:08,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:08,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:08,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:08,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:08,960 INFO L87 Difference]: Start difference. First operand 2399 states and 4522 transitions. Second operand 4 states. [2020-12-22 05:59:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:09,483 INFO L93 Difference]: Finished difference Result 9350 states and 17643 transitions. [2020-12-22 05:59:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:09,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:59:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:09,529 INFO L225 Difference]: With dead ends: 9350 [2020-12-22 05:59:09,529 INFO L226 Difference]: Without dead ends: 6973 [2020-12-22 05:59:09,538 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 05:59:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2020-12-22 05:59:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 2375. [2020-12-22 05:59:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4469 transitions. [2020-12-22 05:59:09,688 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4469 transitions. Word has length 54 [2020-12-22 05:59:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:09,688 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4469 transitions. [2020-12-22 05:59:09,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4469 transitions. [2020-12-22 05:59:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:59:09,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:09,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:09,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:59:09,693 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:09,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1947975109, now seen corresponding path program 1 times [2020-12-22 05:59:09,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:09,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377241728] [2020-12-22 05:59:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:09,823 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 05:59:09,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377241728] [2020-12-22 05:59:09,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:09,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:09,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368870481] [2020-12-22 05:59:09,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:09,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:09,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:09,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:09,827 INFO L87 Difference]: Start difference. First operand 2375 states and 4469 transitions. Second operand 4 states. [2020-12-22 05:59:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,222 INFO L93 Difference]: Finished difference Result 7033 states and 13258 transitions. [2020-12-22 05:59:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:10,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 05:59:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,253 INFO L225 Difference]: With dead ends: 7033 [2020-12-22 05:59:10,253 INFO L226 Difference]: Without dead ends: 4680 [2020-12-22 05:59:10,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-12-22 05:59:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 2375. [2020-12-22 05:59:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4463 transitions. [2020-12-22 05:59:10,364 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4463 transitions. Word has length 55 [2020-12-22 05:59:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:10,373 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4463 transitions. [2020-12-22 05:59:10,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4463 transitions. [2020-12-22 05:59:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 05:59:10,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:10,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:10,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:59:10,376 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash 57770452, now seen corresponding path program 1 times [2020-12-22 05:59:10,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:10,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068000573] [2020-12-22 05:59:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:10,500 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 05:59:10,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068000573] [2020-12-22 05:59:10,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:10,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:10,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251075618] [2020-12-22 05:59:10,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:10,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:10,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:10,506 INFO L87 Difference]: Start difference. First operand 2375 states and 4463 transitions. Second operand 4 states. [2020-12-22 05:59:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,961 INFO L93 Difference]: Finished difference Result 7033 states and 13246 transitions. [2020-12-22 05:59:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:10,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 05:59:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,988 INFO L225 Difference]: With dead ends: 7033 [2020-12-22 05:59:10,988 INFO L226 Difference]: Without dead ends: 4680 [2020-12-22 05:59:10,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-12-22 05:59:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 2375. [2020-12-22 05:59:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4457 transitions. [2020-12-22 05:59:11,093 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4457 transitions. Word has length 57 [2020-12-22 05:59:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:11,093 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4457 transitions. [2020-12-22 05:59:11,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4457 transitions. [2020-12-22 05:59:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:59:11,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:11,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:11,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:59:11,096 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:11,097 INFO L82 PathProgramCache]: Analyzing trace with hash -964365009, now seen corresponding path program 1 times [2020-12-22 05:59:11,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:11,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268733801] [2020-12-22 05:59:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:11,163 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 05:59:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268733801] [2020-12-22 05:59:11,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:11,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:11,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966922127] [2020-12-22 05:59:11,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:11,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:11,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:11,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:11,166 INFO L87 Difference]: Start difference. First operand 2375 states and 4457 transitions. Second operand 4 states. [2020-12-22 05:59:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:11,701 INFO L93 Difference]: Finished difference Result 11625 states and 21900 transitions. [2020-12-22 05:59:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:11,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:59:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:11,756 INFO L225 Difference]: With dead ends: 11625 [2020-12-22 05:59:11,756 INFO L226 Difference]: Without dead ends: 9272 [2020-12-22 05:59:11,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2020-12-22 05:59:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 2375. [2020-12-22 05:59:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4456 transitions. [2020-12-22 05:59:11,937 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4456 transitions. Word has length 59 [2020-12-22 05:59:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:11,937 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4456 transitions. [2020-12-22 05:59:11,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4456 transitions. [2020-12-22 05:59:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:59:11,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:11,941 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 05:59:11,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:59:11,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:11,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1558672916, now seen corresponding path program 1 times [2020-12-22 05:59:11,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:11,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232839626] [2020-12-22 05:59:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,041 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 05:59:12,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232839626] [2020-12-22 05:59:12,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:12,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6758725] [2020-12-22 05:59:12,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:12,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:12,044 INFO L87 Difference]: Start difference. First operand 2375 states and 4456 transitions. Second operand 4 states. [2020-12-22 05:59:12,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:12,410 INFO L93 Difference]: Finished difference Result 7033 states and 13233 transitions. [2020-12-22 05:59:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:12,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:59:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:12,425 INFO L225 Difference]: With dead ends: 7033 [2020-12-22 05:59:12,425 INFO L226 Difference]: Without dead ends: 4680 [2020-12-22 05:59:12,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-12-22 05:59:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 2375. [2020-12-22 05:59:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4450 transitions. [2020-12-22 05:59:12,538 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4450 transitions. Word has length 60 [2020-12-22 05:59:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:12,539 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4450 transitions. [2020-12-22 05:59:12,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4450 transitions. [2020-12-22 05:59:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:59:12,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:12,541 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 05:59:12,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:59:12,541 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:12,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:12,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1375070420, now seen corresponding path program 1 times [2020-12-22 05:59:12,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:12,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181368940] [2020-12-22 05:59:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,639 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 05:59:12,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181368940] [2020-12-22 05:59:12,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:12,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257487262] [2020-12-22 05:59:12,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:12,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:12,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:12,642 INFO L87 Difference]: Start difference. First operand 2375 states and 4450 transitions. Second operand 4 states. [2020-12-22 05:59:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:12,985 INFO L93 Difference]: Finished difference Result 7033 states and 13221 transitions. [2020-12-22 05:59:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:12,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 05:59:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:12,999 INFO L225 Difference]: With dead ends: 7033 [2020-12-22 05:59:12,999 INFO L226 Difference]: Without dead ends: 4680 [2020-12-22 05:59:13,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2020-12-22 05:59:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 2375. [2020-12-22 05:59:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 05:59:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4444 transitions. [2020-12-22 05:59:13,118 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4444 transitions. Word has length 61 [2020-12-22 05:59:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:13,119 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 4444 transitions. [2020-12-22 05:59:13,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4444 transitions. [2020-12-22 05:59:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:59:13,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:13,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:13,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:59:13,121 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:13,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1110006503, now seen corresponding path program 1 times [2020-12-22 05:59:13,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:13,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164159681] [2020-12-22 05:59:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:13,211 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 05:59:13,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164159681] [2020-12-22 05:59:13,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:13,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:13,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469972076] [2020-12-22 05:59:13,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:13,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:13,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:13,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:13,213 INFO L87 Difference]: Start difference. First operand 2375 states and 4444 transitions. Second operand 4 states. [2020-12-22 05:59:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:13,596 INFO L93 Difference]: Finished difference Result 9308 states and 17509 transitions. [2020-12-22 05:59:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:13,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:59:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:13,617 INFO L225 Difference]: With dead ends: 9308 [2020-12-22 05:59:13,617 INFO L226 Difference]: Without dead ends: 6961 [2020-12-22 05:59:13,623 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 05:59:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2020-12-22 05:59:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 2377. [2020-12-22 05:59:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2377 states. [2020-12-22 05:59:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4445 transitions. [2020-12-22 05:59:13,763 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4445 transitions. Word has length 62 [2020-12-22 05:59:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:13,763 INFO L481 AbstractCegarLoop]: Abstraction has 2377 states and 4445 transitions. [2020-12-22 05:59:13,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4445 transitions. [2020-12-22 05:59:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 05:59:13,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:13,766 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 05:59:13,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:59:13,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1949245111, now seen corresponding path program 1 times [2020-12-22 05:59:13,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:13,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415739487] [2020-12-22 05:59:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:13,852 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 05:59:13,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415739487] [2020-12-22 05:59:13,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:13,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:13,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006899321] [2020-12-22 05:59:13,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:13,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:13,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:13,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:13,860 INFO L87 Difference]: Start difference. First operand 2377 states and 4445 transitions. Second operand 4 states. [2020-12-22 05:59:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:14,269 INFO L93 Difference]: Finished difference Result 9300 states and 17489 transitions. [2020-12-22 05:59:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:14,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 05:59:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:14,290 INFO L225 Difference]: With dead ends: 9300 [2020-12-22 05:59:14,290 INFO L226 Difference]: Without dead ends: 6956 [2020-12-22 05:59:14,297 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 05:59:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-12-22 05:59:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 2382. [2020-12-22 05:59:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2382 states. [2020-12-22 05:59:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4453 transitions. [2020-12-22 05:59:14,486 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4453 transitions. Word has length 63 [2020-12-22 05:59:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:14,491 INFO L481 AbstractCegarLoop]: Abstraction has 2382 states and 4453 transitions. [2020-12-22 05:59:14,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4453 transitions. [2020-12-22 05:59:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:59:14,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:14,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:14,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:59:14,501 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:14,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1919514994, now seen corresponding path program 1 times [2020-12-22 05:59:14,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:14,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736862893] [2020-12-22 05:59:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,574 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 05:59:14,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736862893] [2020-12-22 05:59:14,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:14,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930463666] [2020-12-22 05:59:14,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:14,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:14,577 INFO L87 Difference]: Start difference. First operand 2382 states and 4453 transitions. Second operand 3 states. [2020-12-22 05:59:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:14,720 INFO L93 Difference]: Finished difference Result 4721 states and 8848 transitions. [2020-12-22 05:59:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:14,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 05:59:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:14,729 INFO L225 Difference]: With dead ends: 4721 [2020-12-22 05:59:14,729 INFO L226 Difference]: Without dead ends: 2376 [2020-12-22 05:59:14,734 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 05:59:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2020-12-22 05:59:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2376. [2020-12-22 05:59:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2376 states. [2020-12-22 05:59:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 4441 transitions. [2020-12-22 05:59:14,862 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 4441 transitions. Word has length 64 [2020-12-22 05:59:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:14,862 INFO L481 AbstractCegarLoop]: Abstraction has 2376 states and 4441 transitions. [2020-12-22 05:59:14,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 4441 transitions. [2020-12-22 05:59:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:59:14,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:14,865 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] [2020-12-22 05:59:14,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:59:14,866 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash 67853513, now seen corresponding path program 1 times [2020-12-22 05:59:14,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:14,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536342242] [2020-12-22 05:59:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,962 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 05:59:14,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536342242] [2020-12-22 05:59:14,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:14,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747872649] [2020-12-22 05:59:14,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:14,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:14,966 INFO L87 Difference]: Start difference. First operand 2376 states and 4441 transitions. Second operand 5 states. [2020-12-22 05:59:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:15,179 INFO L93 Difference]: Finished difference Result 4665 states and 8761 transitions. [2020-12-22 05:59:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:15,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 05:59:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:15,188 INFO L225 Difference]: With dead ends: 4665 [2020-12-22 05:59:15,188 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 05:59:15,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 05:59:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2020-12-22 05:59:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-12-22 05:59:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 4419 transitions. [2020-12-22 05:59:15,302 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 4419 transitions. Word has length 66 [2020-12-22 05:59:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:15,303 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states and 4419 transitions. [2020-12-22 05:59:15,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 4419 transitions. [2020-12-22 05:59:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:59:15,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:15,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:15,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:59:15,306 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:15,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:15,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2130935477, now seen corresponding path program 1 times [2020-12-22 05:59:15,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:15,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698924822] [2020-12-22 05:59:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:15,382 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 05:59:15,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698924822] [2020-12-22 05:59:15,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:15,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:15,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518018041] [2020-12-22 05:59:15,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:15,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:15,385 INFO L87 Difference]: Start difference. First operand 2363 states and 4419 transitions. Second operand 5 states. [2020-12-22 05:59:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:15,553 INFO L93 Difference]: Finished difference Result 4659 states and 8750 transitions. [2020-12-22 05:59:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:15,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 05:59:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:15,560 INFO L225 Difference]: With dead ends: 4659 [2020-12-22 05:59:15,560 INFO L226 Difference]: Without dead ends: 2357 [2020-12-22 05:59:15,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:59:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2020-12-22 05:59:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2357. [2020-12-22 05:59:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2020-12-22 05:59:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 4410 transitions. [2020-12-22 05:59:15,656 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 4410 transitions. Word has length 69 [2020-12-22 05:59:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:15,658 INFO L481 AbstractCegarLoop]: Abstraction has 2357 states and 4410 transitions. [2020-12-22 05:59:15,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 4410 transitions. [2020-12-22 05:59:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:59:15,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:15,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:15,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:59:15,664 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:15,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:15,665 INFO L82 PathProgramCache]: Analyzing trace with hash -872318155, now seen corresponding path program 1 times [2020-12-22 05:59:15,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:15,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277300557] [2020-12-22 05:59:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:15,737 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 05:59:15,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277300557] [2020-12-22 05:59:15,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:15,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:15,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459857405] [2020-12-22 05:59:15,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:15,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:15,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:15,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:15,740 INFO L87 Difference]: Start difference. First operand 2357 states and 4410 transitions. Second operand 4 states. [2020-12-22 05:59:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:15,891 INFO L93 Difference]: Finished difference Result 4653 states and 8741 transitions. [2020-12-22 05:59:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:15,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 05:59:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:15,898 INFO L225 Difference]: With dead ends: 4653 [2020-12-22 05:59:15,899 INFO L226 Difference]: Without dead ends: 2343 [2020-12-22 05:59:15,908 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 05:59:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-12-22 05:59:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2343. [2020-12-22 05:59:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-12-22 05:59:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 4389 transitions. [2020-12-22 05:59:16,009 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 4389 transitions. Word has length 69 [2020-12-22 05:59:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:16,009 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 4389 transitions. [2020-12-22 05:59:16,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 4389 transitions. [2020-12-22 05:59:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:59:16,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:16,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:16,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:59:16,012 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1896232798, now seen corresponding path program 1 times [2020-12-22 05:59:16,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:16,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656281541] [2020-12-22 05:59:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:16,110 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 05:59:16,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656281541] [2020-12-22 05:59:16,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809452954] [2020-12-22 05:59:16,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:16,112 INFO L87 Difference]: Start difference. First operand 2343 states and 4389 transitions. Second operand 6 states. [2020-12-22 05:59:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,356 INFO L93 Difference]: Finished difference Result 4653 states and 8736 transitions. [2020-12-22 05:59:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:16,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 05:59:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,376 INFO L225 Difference]: With dead ends: 4653 [2020-12-22 05:59:16,376 INFO L226 Difference]: Without dead ends: 2363 [2020-12-22 05:59:16,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-12-22 05:59:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2343. [2020-12-22 05:59:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-12-22 05:59:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 4388 transitions. [2020-12-22 05:59:16,478 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 4388 transitions. Word has length 70 [2020-12-22 05:59:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:16,479 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 4388 transitions. [2020-12-22 05:59:16,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 4388 transitions. [2020-12-22 05:59:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:59:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:16,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:16,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:59:16,481 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash -700534802, now seen corresponding path program 1 times [2020-12-22 05:59:16,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:16,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127467057] [2020-12-22 05:59:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:16,565 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 05:59:16,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127467057] [2020-12-22 05:59:16,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:16,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:16,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954927915] [2020-12-22 05:59:16,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:16,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:16,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:16,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:16,568 INFO L87 Difference]: Start difference. First operand 2343 states and 4388 transitions. Second operand 6 states. [2020-12-22 05:59:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,810 INFO L93 Difference]: Finished difference Result 4643 states and 8717 transitions. [2020-12-22 05:59:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:16,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 05:59:16,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,819 INFO L225 Difference]: With dead ends: 4643 [2020-12-22 05:59:16,819 INFO L226 Difference]: Without dead ends: 2358 [2020-12-22 05:59:16,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2020-12-22 05:59:16,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2343. [2020-12-22 05:59:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-12-22 05:59:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 4387 transitions. [2020-12-22 05:59:16,931 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 4387 transitions. Word has length 71 [2020-12-22 05:59:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:16,931 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 4387 transitions. [2020-12-22 05:59:16,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 4387 transitions. [2020-12-22 05:59:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:59:16,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:16,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:16,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:59:16,934 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash -583370291, now seen corresponding path program 1 times [2020-12-22 05:59:16,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:16,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887859633] [2020-12-22 05:59:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:17,023 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 05:59:17,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887859633] [2020-12-22 05:59:17,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:17,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:17,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325129907] [2020-12-22 05:59:17,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:17,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:17,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:17,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:17,028 INFO L87 Difference]: Start difference. First operand 2343 states and 4387 transitions. Second operand 5 states. [2020-12-22 05:59:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:18,974 INFO L93 Difference]: Finished difference Result 9329 states and 17495 transitions. [2020-12-22 05:59:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:18,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:59:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:18,995 INFO L225 Difference]: With dead ends: 9329 [2020-12-22 05:59:18,995 INFO L226 Difference]: Without dead ends: 7059 [2020-12-22 05:59:19,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:59:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2020-12-22 05:59:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 2347. [2020-12-22 05:59:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-12-22 05:59:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 4391 transitions. [2020-12-22 05:59:19,152 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 4391 transitions. Word has length 72 [2020-12-22 05:59:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:19,153 INFO L481 AbstractCegarLoop]: Abstraction has 2347 states and 4391 transitions. [2020-12-22 05:59:19,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 4391 transitions. [2020-12-22 05:59:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:59:19,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:19,156 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] [2020-12-22 05:59:19,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:59:19,156 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1999793285, now seen corresponding path program 1 times [2020-12-22 05:59:19,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:19,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169762125] [2020-12-22 05:59:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:19,226 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 05:59:19,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169762125] [2020-12-22 05:59:19,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:19,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:19,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758405726] [2020-12-22 05:59:19,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:19,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:19,247 INFO L87 Difference]: Start difference. First operand 2347 states and 4391 transitions. Second operand 4 states. [2020-12-22 05:59:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,733 INFO L93 Difference]: Finished difference Result 6769 states and 12648 transitions. [2020-12-22 05:59:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:20,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 05:59:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,745 INFO L225 Difference]: With dead ends: 6769 [2020-12-22 05:59:20,745 INFO L226 Difference]: Without dead ends: 4482 [2020-12-22 05:59:20,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:59:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2020-12-22 05:59:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 3206. [2020-12-22 05:59:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3206 states. [2020-12-22 05:59:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 5944 transitions. [2020-12-22 05:59:20,933 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 5944 transitions. Word has length 73 [2020-12-22 05:59:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:20,933 INFO L481 AbstractCegarLoop]: Abstraction has 3206 states and 5944 transitions. [2020-12-22 05:59:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 5944 transitions. [2020-12-22 05:59:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:20,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:20,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:59:20,936 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:20,937 INFO L82 PathProgramCache]: Analyzing trace with hash 858880739, now seen corresponding path program 1 times [2020-12-22 05:59:20,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:20,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601866047] [2020-12-22 05:59:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:21,007 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 05:59:21,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601866047] [2020-12-22 05:59:21,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:21,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:21,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074259025] [2020-12-22 05:59:21,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:21,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:21,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:21,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:21,009 INFO L87 Difference]: Start difference. First operand 3206 states and 5944 transitions. Second operand 5 states. [2020-12-22 05:59:22,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:22,125 INFO L93 Difference]: Finished difference Result 22983 states and 42901 transitions. [2020-12-22 05:59:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:22,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:59:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:22,146 INFO L225 Difference]: With dead ends: 22983 [2020-12-22 05:59:22,146 INFO L226 Difference]: Without dead ends: 19846 [2020-12-22 05:59:22,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19846 states. [2020-12-22 05:59:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19846 to 5885. [2020-12-22 05:59:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5885 states. [2020-12-22 05:59:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 10964 transitions. [2020-12-22 05:59:22,631 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 10964 transitions. Word has length 75 [2020-12-22 05:59:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:22,631 INFO L481 AbstractCegarLoop]: Abstraction has 5885 states and 10964 transitions. [2020-12-22 05:59:22,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 10964 transitions. [2020-12-22 05:59:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:22,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:22,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:22,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:22,634 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 724867233, now seen corresponding path program 1 times [2020-12-22 05:59:22,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:22,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072869076] [2020-12-22 05:59:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:22,723 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 05:59:22,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072869076] [2020-12-22 05:59:22,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:22,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:22,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335091384] [2020-12-22 05:59:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:22,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:22,728 INFO L87 Difference]: Start difference. First operand 5885 states and 10964 transitions. Second operand 4 states. [2020-12-22 05:59:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:23,307 INFO L93 Difference]: Finished difference Result 14344 states and 26716 transitions. [2020-12-22 05:59:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:23,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:59:23,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:23,322 INFO L225 Difference]: With dead ends: 14344 [2020-12-22 05:59:23,322 INFO L226 Difference]: Without dead ends: 11836 [2020-12-22 05:59:23,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:59:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2020-12-22 05:59:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 8142. [2020-12-22 05:59:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8142 states. [2020-12-22 05:59:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 15167 transitions. [2020-12-22 05:59:23,857 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 15167 transitions. Word has length 75 [2020-12-22 05:59:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:23,858 INFO L481 AbstractCegarLoop]: Abstraction has 8142 states and 15167 transitions. [2020-12-22 05:59:23,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 15167 transitions. [2020-12-22 05:59:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:59:23,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:23,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:23,860 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1193328725, now seen corresponding path program 1 times [2020-12-22 05:59:23,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978548559] [2020-12-22 05:59:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:24,000 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 05:59:24,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978548559] [2020-12-22 05:59:24,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:24,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:24,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899956411] [2020-12-22 05:59:24,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:24,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:24,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:24,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:24,002 INFO L87 Difference]: Start difference. First operand 8142 states and 15167 transitions. Second operand 4 states. [2020-12-22 05:59:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:24,686 INFO L93 Difference]: Finished difference Result 16856 states and 31303 transitions. [2020-12-22 05:59:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:24,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-12-22 05:59:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:24,706 INFO L225 Difference]: With dead ends: 16856 [2020-12-22 05:59:24,707 INFO L226 Difference]: Without dead ends: 12280 [2020-12-22 05:59:24,717 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 05:59:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2020-12-22 05:59:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 8152. [2020-12-22 05:59:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8152 states. [2020-12-22 05:59:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8152 states to 8152 states and 15173 transitions. [2020-12-22 05:59:25,354 INFO L78 Accepts]: Start accepts. Automaton has 8152 states and 15173 transitions. Word has length 77 [2020-12-22 05:59:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:25,354 INFO L481 AbstractCegarLoop]: Abstraction has 8152 states and 15173 transitions. [2020-12-22 05:59:25,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 8152 states and 15173 transitions. [2020-12-22 05:59:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:25,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:25,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:25,358 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1202050348, now seen corresponding path program 1 times [2020-12-22 05:59:25,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409252158] [2020-12-22 05:59:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:25,458 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 05:59:25,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409252158] [2020-12-22 05:59:25,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:25,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:25,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934299004] [2020-12-22 05:59:25,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:25,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:25,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:25,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:25,460 INFO L87 Difference]: Start difference. First operand 8152 states and 15173 transitions. Second operand 7 states. [2020-12-22 05:59:26,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:26,402 INFO L93 Difference]: Finished difference Result 17266 states and 32100 transitions. [2020-12-22 05:59:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:26,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-12-22 05:59:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:26,417 INFO L225 Difference]: With dead ends: 17266 [2020-12-22 05:59:26,417 INFO L226 Difference]: Without dead ends: 12511 [2020-12-22 05:59:26,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12511 states. [2020-12-22 05:59:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 8156. [2020-12-22 05:59:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8156 states. [2020-12-22 05:59:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 15171 transitions. [2020-12-22 05:59:26,807 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 15171 transitions. Word has length 83 [2020-12-22 05:59:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:26,808 INFO L481 AbstractCegarLoop]: Abstraction has 8156 states and 15171 transitions. [2020-12-22 05:59:26,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 15171 transitions. [2020-12-22 05:59:26,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:26,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:26,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:26,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:26,811 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:26,812 INFO L82 PathProgramCache]: Analyzing trace with hash -983195630, now seen corresponding path program 1 times [2020-12-22 05:59:26,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:26,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106423337] [2020-12-22 05:59:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:26,884 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 05:59:26,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106423337] [2020-12-22 05:59:26,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:26,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:26,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398551732] [2020-12-22 05:59:26,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:26,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:26,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:26,886 INFO L87 Difference]: Start difference. First operand 8156 states and 15171 transitions. Second operand 5 states. [2020-12-22 05:59:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:27,432 INFO L93 Difference]: Finished difference Result 12731 states and 23682 transitions. [2020-12-22 05:59:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:27,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:59:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:27,443 INFO L225 Difference]: With dead ends: 12731 [2020-12-22 05:59:27,443 INFO L226 Difference]: Without dead ends: 8175 [2020-12-22 05:59:27,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2020-12-22 05:59:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 8156. [2020-12-22 05:59:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8156 states. [2020-12-22 05:59:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 15156 transitions. [2020-12-22 05:59:27,789 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 15156 transitions. Word has length 83 [2020-12-22 05:59:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:27,789 INFO L481 AbstractCegarLoop]: Abstraction has 8156 states and 15156 transitions. [2020-12-22 05:59:27,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 15156 transitions. [2020-12-22 05:59:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:27,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:27,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:27,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:27,791 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:27,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1570001644, now seen corresponding path program 1 times [2020-12-22 05:59:27,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:27,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104654812] [2020-12-22 05:59:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:27,858 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 05:59:27,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104654812] [2020-12-22 05:59:27,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:27,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:27,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753802808] [2020-12-22 05:59:27,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:27,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:27,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:27,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:27,860 INFO L87 Difference]: Start difference. First operand 8156 states and 15156 transitions. Second operand 3 states. [2020-12-22 05:59:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:28,193 INFO L93 Difference]: Finished difference Result 14701 states and 27337 transitions. [2020-12-22 05:59:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:28,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 05:59:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:28,204 INFO L225 Difference]: With dead ends: 14701 [2020-12-22 05:59:28,204 INFO L226 Difference]: Without dead ends: 8134 [2020-12-22 05:59:28,213 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 05:59:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2020-12-22 05:59:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 8134. [2020-12-22 05:59:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8134 states. [2020-12-22 05:59:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8134 states to 8134 states and 15114 transitions. [2020-12-22 05:59:28,654 INFO L78 Accepts]: Start accepts. Automaton has 8134 states and 15114 transitions. Word has length 83 [2020-12-22 05:59:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:28,654 INFO L481 AbstractCegarLoop]: Abstraction has 8134 states and 15114 transitions. [2020-12-22 05:59:28,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8134 states and 15114 transitions. [2020-12-22 05:59:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:59:28,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:28,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:28,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:59:28,657 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash -120789210, now seen corresponding path program 1 times [2020-12-22 05:59:28,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:28,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219332770] [2020-12-22 05:59:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:28,735 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 05:59:28,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219332770] [2020-12-22 05:59:28,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:28,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:28,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698689816] [2020-12-22 05:59:28,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:28,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:28,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:28,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:28,737 INFO L87 Difference]: Start difference. First operand 8134 states and 15114 transitions. Second operand 5 states. [2020-12-22 05:59:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:30,324 INFO L93 Difference]: Finished difference Result 32472 states and 59977 transitions. [2020-12-22 05:59:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:30,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:59:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:30,359 INFO L225 Difference]: With dead ends: 32472 [2020-12-22 05:59:30,359 INFO L226 Difference]: Without dead ends: 27947 [2020-12-22 05:59:30,372 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 05:59:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27947 states. [2020-12-22 05:59:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27947 to 9856. [2020-12-22 05:59:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9856 states. [2020-12-22 05:59:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9856 states to 9856 states and 18092 transitions. [2020-12-22 05:59:31,056 INFO L78 Accepts]: Start accepts. Automaton has 9856 states and 18092 transitions. Word has length 85 [2020-12-22 05:59:31,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:31,056 INFO L481 AbstractCegarLoop]: Abstraction has 9856 states and 18092 transitions. [2020-12-22 05:59:31,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9856 states and 18092 transitions. [2020-12-22 05:59:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:59:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:31,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:31,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:59:31,059 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash -436096860, now seen corresponding path program 1 times [2020-12-22 05:59:31,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:31,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133079641] [2020-12-22 05:59:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:31,180 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 05:59:31,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133079641] [2020-12-22 05:59:31,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:31,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:31,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307468082] [2020-12-22 05:59:31,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:31,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:31,182 INFO L87 Difference]: Start difference. First operand 9856 states and 18092 transitions. Second operand 5 states. [2020-12-22 05:59:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:32,006 INFO L93 Difference]: Finished difference Result 16300 states and 29957 transitions. [2020-12-22 05:59:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:32,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:59:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:32,024 INFO L225 Difference]: With dead ends: 16300 [2020-12-22 05:59:32,024 INFO L226 Difference]: Without dead ends: 16287 [2020-12-22 05:59:32,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16287 states. [2020-12-22 05:59:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16287 to 9874. [2020-12-22 05:59:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2020-12-22 05:59:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 18110 transitions. [2020-12-22 05:59:32,544 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 18110 transitions. Word has length 85 [2020-12-22 05:59:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:32,544 INFO L481 AbstractCegarLoop]: Abstraction has 9874 states and 18110 transitions. [2020-12-22 05:59:32,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 18110 transitions. [2020-12-22 05:59:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 05:59:32,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:32,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:32,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:59:32,547 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash 513050185, now seen corresponding path program 1 times [2020-12-22 05:59:32,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:32,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763481060] [2020-12-22 05:59:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:32,613 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 05:59:32,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763481060] [2020-12-22 05:59:32,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:32,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:32,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178147462] [2020-12-22 05:59:32,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:32,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:32,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:32,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:32,616 INFO L87 Difference]: Start difference. First operand 9874 states and 18110 transitions. Second operand 4 states. [2020-12-22 05:59:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:33,301 INFO L93 Difference]: Finished difference Result 9893 states and 18128 transitions. [2020-12-22 05:59:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:33,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 05:59:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:33,312 INFO L225 Difference]: With dead ends: 9893 [2020-12-22 05:59:33,312 INFO L226 Difference]: Without dead ends: 9880 [2020-12-22 05:59:33,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:59:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2020-12-22 05:59:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 9874. [2020-12-22 05:59:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2020-12-22 05:59:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 18100 transitions. [2020-12-22 05:59:33,834 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 18100 transitions. Word has length 87 [2020-12-22 05:59:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:33,834 INFO L481 AbstractCegarLoop]: Abstraction has 9874 states and 18100 transitions. [2020-12-22 05:59:33,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 18100 transitions. [2020-12-22 05:59:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:59:33,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:33,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:33,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:59:33,839 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:33,839 INFO L82 PathProgramCache]: Analyzing trace with hash 227413835, now seen corresponding path program 1 times [2020-12-22 05:59:33,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:33,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821504365] [2020-12-22 05:59:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:33,992 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 05:59:33,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821504365] [2020-12-22 05:59:33,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:33,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:33,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91282570] [2020-12-22 05:59:33,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:33,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:33,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:33,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:33,994 INFO L87 Difference]: Start difference. First operand 9874 states and 18100 transitions. Second operand 5 states. [2020-12-22 05:59:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:35,673 INFO L93 Difference]: Finished difference Result 23395 states and 42697 transitions. [2020-12-22 05:59:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:35,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 05:59:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:35,694 INFO L225 Difference]: With dead ends: 23395 [2020-12-22 05:59:35,699 INFO L226 Difference]: Without dead ends: 15372 [2020-12-22 05:59:35,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:59:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15372 states. [2020-12-22 05:59:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15372 to 9874. [2020-12-22 05:59:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2020-12-22 05:59:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 18090 transitions. [2020-12-22 05:59:36,287 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 18090 transitions. Word has length 94 [2020-12-22 05:59:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:36,287 INFO L481 AbstractCegarLoop]: Abstraction has 9874 states and 18090 transitions. [2020-12-22 05:59:36,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 18090 transitions. [2020-12-22 05:59:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:59:36,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:36,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:36,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:36,291 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:36,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1535745843, now seen corresponding path program 1 times [2020-12-22 05:59:36,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:36,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451664629] [2020-12-22 05:59:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:36,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451664629] [2020-12-22 05:59:36,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:36,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:36,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252705431] [2020-12-22 05:59:36,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:36,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:36,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:36,370 INFO L87 Difference]: Start difference. First operand 9874 states and 18090 transitions. Second operand 5 states. [2020-12-22 05:59:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:38,000 INFO L93 Difference]: Finished difference Result 23292 states and 42551 transitions. [2020-12-22 05:59:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:38,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 05:59:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:38,019 INFO L225 Difference]: With dead ends: 23292 [2020-12-22 05:59:38,020 INFO L226 Difference]: Without dead ends: 14931 [2020-12-22 05:59:38,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14931 states. [2020-12-22 05:59:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14931 to 9874. [2020-12-22 05:59:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2020-12-22 05:59:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 17894 transitions. [2020-12-22 05:59:38,562 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 17894 transitions. Word has length 98 [2020-12-22 05:59:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,563 INFO L481 AbstractCegarLoop]: Abstraction has 9874 states and 17894 transitions. [2020-12-22 05:59:38,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 17894 transitions. [2020-12-22 05:59:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:38,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:38,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:38,567 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,567 INFO L82 PathProgramCache]: Analyzing trace with hash -327430288, now seen corresponding path program 1 times [2020-12-22 05:59:38,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778270008] [2020-12-22 05:59:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:38,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778270008] [2020-12-22 05:59:38,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:38,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801994071] [2020-12-22 05:59:38,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:38,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:38,776 INFO L87 Difference]: Start difference. First operand 9874 states and 17894 transitions. Second operand 6 states. [2020-12-22 05:59:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:41,440 INFO L93 Difference]: Finished difference Result 28964 states and 52541 transitions. [2020-12-22 05:59:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:59:41,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 05:59:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,472 INFO L225 Difference]: With dead ends: 28964 [2020-12-22 05:59:41,472 INFO L226 Difference]: Without dead ends: 23069 [2020-12-22 05:59:41,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23069 states. [2020-12-22 05:59:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23069 to 12572. [2020-12-22 05:59:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12572 states. [2020-12-22 05:59:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12572 states to 12572 states and 22813 transitions. [2020-12-22 05:59:42,352 INFO L78 Accepts]: Start accepts. Automaton has 12572 states and 22813 transitions. Word has length 99 [2020-12-22 05:59:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:42,353 INFO L481 AbstractCegarLoop]: Abstraction has 12572 states and 22813 transitions. [2020-12-22 05:59:42,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 12572 states and 22813 transitions. [2020-12-22 05:59:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:42,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:42,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:42,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:42,355 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:42,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1691001428, now seen corresponding path program 1 times [2020-12-22 05:59:42,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:42,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421312193] [2020-12-22 05:59:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:42,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421312193] [2020-12-22 05:59:42,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:42,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44769373] [2020-12-22 05:59:42,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:42,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:42,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:42,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:42,472 INFO L87 Difference]: Start difference. First operand 12572 states and 22813 transitions. Second operand 6 states. [2020-12-22 05:59:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,502 INFO L93 Difference]: Finished difference Result 39515 states and 71704 transitions. [2020-12-22 05:59:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:59:45,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 05:59:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,538 INFO L225 Difference]: With dead ends: 39515 [2020-12-22 05:59:45,539 INFO L226 Difference]: Without dead ends: 28668 [2020-12-22 05:59:45,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:59:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28668 states. [2020-12-22 05:59:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28668 to 17398. [2020-12-22 05:59:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17398 states. [2020-12-22 05:59:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17398 states to 17398 states and 31331 transitions. [2020-12-22 05:59:46,772 INFO L78 Accepts]: Start accepts. Automaton has 17398 states and 31331 transitions. Word has length 99 [2020-12-22 05:59:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:46,772 INFO L481 AbstractCegarLoop]: Abstraction has 17398 states and 31331 transitions. [2020-12-22 05:59:46,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 17398 states and 31331 transitions. [2020-12-22 05:59:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:46,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:46,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:46,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:46,776 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:46,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1915253328, now seen corresponding path program 1 times [2020-12-22 05:59:46,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:46,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303173727] [2020-12-22 05:59:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:46,848 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 05:59:46,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303173727] [2020-12-22 05:59:46,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:46,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:59:46,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133713233] [2020-12-22 05:59:46,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:46,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:46,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:46,850 INFO L87 Difference]: Start difference. First operand 17398 states and 31331 transitions. Second operand 3 states. [2020-12-22 05:59:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:47,982 INFO L93 Difference]: Finished difference Result 28803 states and 52069 transitions. [2020-12-22 05:59:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:47,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 05:59:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:48,000 INFO L225 Difference]: With dead ends: 28803 [2020-12-22 05:59:48,000 INFO L226 Difference]: Without dead ends: 15009 [2020-12-22 05:59:48,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15009 states. [2020-12-22 05:59:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15009 to 14996. [2020-12-22 05:59:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14996 states. [2020-12-22 05:59:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14996 states to 14996 states and 27335 transitions. [2020-12-22 05:59:48,845 INFO L78 Accepts]: Start accepts. Automaton has 14996 states and 27335 transitions. Word has length 99 [2020-12-22 05:59:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:48,845 INFO L481 AbstractCegarLoop]: Abstraction has 14996 states and 27335 transitions. [2020-12-22 05:59:48,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14996 states and 27335 transitions. [2020-12-22 05:59:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:59:48,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:48,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:48,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:59:48,849 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:48,849 INFO L82 PathProgramCache]: Analyzing trace with hash 121151173, now seen corresponding path program 1 times [2020-12-22 05:59:48,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:48,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192620253] [2020-12-22 05:59:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:48,932 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 05:59:48,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192620253] [2020-12-22 05:59:48,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:48,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:48,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165574880] [2020-12-22 05:59:48,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:48,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:48,936 INFO L87 Difference]: Start difference. First operand 14996 states and 27335 transitions. Second operand 5 states. [2020-12-22 05:59:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:50,717 INFO L93 Difference]: Finished difference Result 43282 states and 78920 transitions. [2020-12-22 05:59:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:50,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:59:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:50,756 INFO L225 Difference]: With dead ends: 43282 [2020-12-22 05:59:50,757 INFO L226 Difference]: Without dead ends: 29903 [2020-12-22 05:59:50,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 05:59:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29903 states. [2020-12-22 05:59:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29903 to 29903. [2020-12-22 05:59:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29903 states. [2020-12-22 05:59:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29903 states to 29903 states and 54538 transitions. [2020-12-22 05:59:52,537 INFO L78 Accepts]: Start accepts. Automaton has 29903 states and 54538 transitions. Word has length 100 [2020-12-22 05:59:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:52,537 INFO L481 AbstractCegarLoop]: Abstraction has 29903 states and 54538 transitions. [2020-12-22 05:59:52,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 29903 states and 54538 transitions. [2020-12-22 05:59:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:59:52,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:52,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:52,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:59:52,542 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1102571056, now seen corresponding path program 1 times [2020-12-22 05:59:52,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:52,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527194656] [2020-12-22 05:59:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:52,605 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 05:59:52,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527194656] [2020-12-22 05:59:52,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:52,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:52,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037468308] [2020-12-22 05:59:52,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:52,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:52,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:52,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:52,607 INFO L87 Difference]: Start difference. First operand 29903 states and 54538 transitions. Second operand 5 states. [2020-12-22 05:59:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:54,301 INFO L93 Difference]: Finished difference Result 56599 states and 103157 transitions. [2020-12-22 05:59:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:54,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 05:59:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:54,338 INFO L225 Difference]: With dead ends: 56599 [2020-12-22 05:59:54,338 INFO L226 Difference]: Without dead ends: 28304 [2020-12-22 05:59:54,359 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 05:59:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28304 states. [2020-12-22 05:59:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28304 to 28304. [2020-12-22 05:59:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28304 states. [2020-12-22 05:59:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28304 states to 28304 states and 51580 transitions. [2020-12-22 05:59:56,131 INFO L78 Accepts]: Start accepts. Automaton has 28304 states and 51580 transitions. Word has length 101 [2020-12-22 05:59:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:56,131 INFO L481 AbstractCegarLoop]: Abstraction has 28304 states and 51580 transitions. [2020-12-22 05:59:56,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 28304 states and 51580 transitions. [2020-12-22 05:59:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 05:59:56,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:56,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:56,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:59:56,134 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:56,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1844770336, now seen corresponding path program 1 times [2020-12-22 05:59:56,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:56,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19843563] [2020-12-22 05:59:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:56,253 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 05:59:56,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19843563] [2020-12-22 05:59:56,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:56,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:56,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141463424] [2020-12-22 05:59:56,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:56,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:56,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:56,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:56,255 INFO L87 Difference]: Start difference. First operand 28304 states and 51580 transitions. Second operand 5 states. [2020-12-22 06:00:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:00,198 INFO L93 Difference]: Finished difference Result 77917 states and 142208 transitions. [2020-12-22 06:00:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:00,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-12-22 06:00:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:00,275 INFO L225 Difference]: With dead ends: 77917 [2020-12-22 06:00:00,275 INFO L226 Difference]: Without dead ends: 54867 [2020-12-22 06:00:00,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:00:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54867 states. [2020-12-22 06:00:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54867 to 28304. [2020-12-22 06:00:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28304 states. [2020-12-22 06:00:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28304 states to 28304 states and 51566 transitions. [2020-12-22 06:00:02,722 INFO L78 Accepts]: Start accepts. Automaton has 28304 states and 51566 transitions. Word has length 102 [2020-12-22 06:00:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:02,723 INFO L481 AbstractCegarLoop]: Abstraction has 28304 states and 51566 transitions. [2020-12-22 06:00:02,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 28304 states and 51566 transitions. [2020-12-22 06:00:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:00:02,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:02,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:02,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:00:02,725 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 368376399, now seen corresponding path program 1 times [2020-12-22 06:00:02,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:02,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592310376] [2020-12-22 06:00:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:02,790 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 06:00:02,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592310376] [2020-12-22 06:00:02,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:02,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:02,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135602144] [2020-12-22 06:00:02,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:02,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:02,792 INFO L87 Difference]: Start difference. First operand 28304 states and 51566 transitions. Second operand 5 states. [2020-12-22 06:00:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,903 INFO L93 Difference]: Finished difference Result 51590 states and 93768 transitions. [2020-12-22 06:00:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:04,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-12-22 06:00:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,949 INFO L225 Difference]: With dead ends: 51590 [2020-12-22 06:00:04,950 INFO L226 Difference]: Without dead ends: 28319 [2020-12-22 06:00:04,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28319 states. [2020-12-22 06:00:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28319 to 28304. [2020-12-22 06:00:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28304 states. [2020-12-22 06:00:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28304 states to 28304 states and 51262 transitions. [2020-12-22 06:00:06,987 INFO L78 Accepts]: Start accepts. Automaton has 28304 states and 51262 transitions. Word has length 103 [2020-12-22 06:00:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,988 INFO L481 AbstractCegarLoop]: Abstraction has 28304 states and 51262 transitions. [2020-12-22 06:00:06,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 28304 states and 51262 transitions. [2020-12-22 06:00:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:00:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:06,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:00:06,991 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash -78814164, now seen corresponding path program 1 times [2020-12-22 06:00:06,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893390573] [2020-12-22 06:00:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,107 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 06:00:07,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893390573] [2020-12-22 06:00:07,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:07,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229658264] [2020-12-22 06:00:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:07,109 INFO L87 Difference]: Start difference. First operand 28304 states and 51262 transitions. Second operand 7 states. [2020-12-22 06:00:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,308 INFO L93 Difference]: Finished difference Result 48476 states and 88340 transitions. [2020-12-22 06:00:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:00:10,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-12-22 06:00:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,364 INFO L225 Difference]: With dead ends: 48476 [2020-12-22 06:00:10,364 INFO L226 Difference]: Without dead ends: 48461 [2020-12-22 06:00:10,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48461 states. [2020-12-22 06:00:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48461 to 28370. [2020-12-22 06:00:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28370 states. [2020-12-22 06:00:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28370 states to 28370 states and 51306 transitions. [2020-12-22 06:00:12,564 INFO L78 Accepts]: Start accepts. Automaton has 28370 states and 51306 transitions. Word has length 104 [2020-12-22 06:00:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,565 INFO L481 AbstractCegarLoop]: Abstraction has 28370 states and 51306 transitions. [2020-12-22 06:00:12,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 28370 states and 51306 transitions. [2020-12-22 06:00:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 06:00:12,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:12,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:00:12,568 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1288856304, now seen corresponding path program 1 times [2020-12-22 06:00:12,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913591062] [2020-12-22 06:00:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,652 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 06:00:12,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913591062] [2020-12-22 06:00:12,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:12,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795209009] [2020-12-22 06:00:12,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:12,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:12,654 INFO L87 Difference]: Start difference. First operand 28370 states and 51306 transitions. Second operand 5 states. [2020-12-22 06:00:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:22,297 INFO L93 Difference]: Finished difference Result 178930 states and 327864 transitions. [2020-12-22 06:00:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:22,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-12-22 06:00:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:22,699 INFO L225 Difference]: With dead ends: 178930 [2020-12-22 06:00:22,699 INFO L226 Difference]: Without dead ends: 152203 [2020-12-22 06:00:22,743 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 06:00:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152203 states. [2020-12-22 06:00:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152203 to 56739. [2020-12-22 06:00:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56739 states. [2020-12-22 06:00:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56739 states to 56739 states and 102607 transitions. [2020-12-22 06:00:27,816 INFO L78 Accepts]: Start accepts. Automaton has 56739 states and 102607 transitions. Word has length 120 [2020-12-22 06:00:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,816 INFO L481 AbstractCegarLoop]: Abstraction has 56739 states and 102607 transitions. [2020-12-22 06:00:27,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56739 states and 102607 transitions. [2020-12-22 06:00:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:00:27,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:27,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:00:27,822 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2055408800, now seen corresponding path program 1 times [2020-12-22 06:00:27,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066222794] [2020-12-22 06:00:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:27,892 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 06:00:27,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066222794] [2020-12-22 06:00:27,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225345458] [2020-12-22 06:00:27,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:27,894 INFO L87 Difference]: Start difference. First operand 56739 states and 102607 transitions. Second operand 3 states. [2020-12-22 06:00:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:35,404 INFO L93 Difference]: Finished difference Result 150167 states and 271735 transitions. [2020-12-22 06:00:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:35,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 06:00:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:35,562 INFO L225 Difference]: With dead ends: 150167 [2020-12-22 06:00:35,562 INFO L226 Difference]: Without dead ends: 96414 [2020-12-22 06:00:35,605 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 06:00:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96414 states. [2020-12-22 06:00:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96414 to 55575. [2020-12-22 06:00:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55575 states. [2020-12-22 06:00:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55575 states to 55575 states and 100309 transitions. [2020-12-22 06:00:40,355 INFO L78 Accepts]: Start accepts. Automaton has 55575 states and 100309 transitions. Word has length 121 [2020-12-22 06:00:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:40,355 INFO L481 AbstractCegarLoop]: Abstraction has 55575 states and 100309 transitions. [2020-12-22 06:00:40,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 55575 states and 100309 transitions. [2020-12-22 06:00:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:00:40,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:40,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:40,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:00:40,361 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:40,361 INFO L82 PathProgramCache]: Analyzing trace with hash 289184614, now seen corresponding path program 1 times [2020-12-22 06:00:40,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:40,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070383126] [2020-12-22 06:00:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:40,437 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 06:00:40,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070383126] [2020-12-22 06:00:40,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:40,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:40,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921021499] [2020-12-22 06:00:40,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:40,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:40,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:40,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:40,440 INFO L87 Difference]: Start difference. First operand 55575 states and 100309 transitions. Second operand 5 states. [2020-12-22 06:00:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:44,333 INFO L93 Difference]: Finished difference Result 83265 states and 150331 transitions. [2020-12-22 06:00:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:44,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-12-22 06:00:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:44,410 INFO L225 Difference]: With dead ends: 83265 [2020-12-22 06:00:44,410 INFO L226 Difference]: Without dead ends: 55174 [2020-12-22 06:00:44,428 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 06:00:44,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55174 states. [2020-12-22 06:00:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55174 to 55174. [2020-12-22 06:00:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55174 states. [2020-12-22 06:00:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55174 states to 55174 states and 99641 transitions. [2020-12-22 06:00:48,540 INFO L78 Accepts]: Start accepts. Automaton has 55174 states and 99641 transitions. Word has length 121 [2020-12-22 06:00:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:48,540 INFO L481 AbstractCegarLoop]: Abstraction has 55174 states and 99641 transitions. [2020-12-22 06:00:48,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 55174 states and 99641 transitions. [2020-12-22 06:00:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:00:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:48,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:48,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:00:48,547 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash 525203587, now seen corresponding path program 1 times [2020-12-22 06:00:48,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:48,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244014548] [2020-12-22 06:00:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:48,753 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 06:00:48,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244014548] [2020-12-22 06:00:48,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:48,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:48,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909153460] [2020-12-22 06:00:48,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:48,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:48,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:48,755 INFO L87 Difference]: Start difference. First operand 55174 states and 99641 transitions. Second operand 4 states. [2020-12-22 06:00:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:54,509 INFO L93 Difference]: Finished difference Result 120837 states and 215336 transitions. [2020-12-22 06:00:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:54,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-22 06:00:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:54,594 INFO L225 Difference]: With dead ends: 120837 [2020-12-22 06:00:54,594 INFO L226 Difference]: Without dead ends: 65870 [2020-12-22 06:00:54,629 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 06:00:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65870 states. [2020-12-22 06:00:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65870 to 55352. [2020-12-22 06:00:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55352 states. [2020-12-22 06:00:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55352 states to 55352 states and 99819 transitions. [2020-12-22 06:00:59,014 INFO L78 Accepts]: Start accepts. Automaton has 55352 states and 99819 transitions. Word has length 139 [2020-12-22 06:00:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:59,014 INFO L481 AbstractCegarLoop]: Abstraction has 55352 states and 99819 transitions. [2020-12-22 06:00:59,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 55352 states and 99819 transitions. [2020-12-22 06:00:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:00:59,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:59,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:59,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:00:59,022 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:59,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1932469078, now seen corresponding path program 1 times [2020-12-22 06:00:59,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:59,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103435577] [2020-12-22 06:00:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:59,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103435577] [2020-12-22 06:00:59,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:59,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:59,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783223390] [2020-12-22 06:00:59,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:59,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:59,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:59,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:59,097 INFO L87 Difference]: Start difference. First operand 55352 states and 99819 transitions. Second operand 4 states. [2020-12-22 06:01:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:03,165 INFO L93 Difference]: Finished difference Result 101142 states and 181727 transitions. [2020-12-22 06:01:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:03,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-22 06:01:03,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:03,230 INFO L225 Difference]: With dead ends: 101142 [2020-12-22 06:01:03,230 INFO L226 Difference]: Without dead ends: 55367 [2020-12-22 06:01:03,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:01:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55367 states. [2020-12-22 06:01:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55367 to 55272. [2020-12-22 06:01:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55272 states. [2020-12-22 06:01:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55272 states to 55272 states and 99650 transitions. [2020-12-22 06:01:07,541 INFO L78 Accepts]: Start accepts. Automaton has 55272 states and 99650 transitions. Word has length 139 [2020-12-22 06:01:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:07,541 INFO L481 AbstractCegarLoop]: Abstraction has 55272 states and 99650 transitions. [2020-12-22 06:01:07,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 55272 states and 99650 transitions. [2020-12-22 06:01:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 06:01:07,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:07,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:07,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:01:07,548 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 688705767, now seen corresponding path program 1 times [2020-12-22 06:01:07,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:07,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183364879] [2020-12-22 06:01:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:07,612 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 06:01:07,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183364879] [2020-12-22 06:01:07,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:07,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:07,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437951754] [2020-12-22 06:01:07,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:07,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:07,614 INFO L87 Difference]: Start difference. First operand 55272 states and 99650 transitions. Second operand 4 states. [2020-12-22 06:01:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:14,811 INFO L93 Difference]: Finished difference Result 144238 states and 259402 transitions. [2020-12-22 06:01:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:14,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-12-22 06:01:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:14,942 INFO L225 Difference]: With dead ends: 144238 [2020-12-22 06:01:14,942 INFO L226 Difference]: Without dead ends: 89023 [2020-12-22 06:01:14,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 06:01:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89023 states. [2020-12-22 06:01:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89023 to 44860. [2020-12-22 06:01:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44860 states. [2020-12-22 06:01:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44860 states to 44860 states and 80508 transitions. [2020-12-22 06:01:19,113 INFO L78 Accepts]: Start accepts. Automaton has 44860 states and 80508 transitions. Word has length 140 [2020-12-22 06:01:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:19,114 INFO L481 AbstractCegarLoop]: Abstraction has 44860 states and 80508 transitions. [2020-12-22 06:01:19,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44860 states and 80508 transitions. [2020-12-22 06:01:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 06:01:19,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:19,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:19,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:01:19,117 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1837779196, now seen corresponding path program 1 times [2020-12-22 06:01:19,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:19,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135825429] [2020-12-22 06:01:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:19,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135825429] [2020-12-22 06:01:19,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:19,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:19,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545735052] [2020-12-22 06:01:19,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:19,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:19,204 INFO L87 Difference]: Start difference. First operand 44860 states and 80508 transitions. Second operand 6 states.