/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_spec2_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:06:30,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:06:30,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:06:30,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:06:30,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:06:30,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:06:30,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:06:30,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:06:30,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:06:30,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:06:30,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:06:30,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:06:30,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:06:30,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:06:30,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:06:30,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:06:30,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:06:30,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:06:30,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:06:30,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:06:30,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:06:30,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:06:30,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:06:30,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:06:30,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:06:30,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:06:30,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:06:30,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:06:30,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:06:30,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:06:30,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:06:30,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:06:30,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:06:30,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:06:30,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:06:30,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:06:30,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:06:30,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:06:30,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:06:30,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:06:30,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:06:30,787 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:06:30,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:06:30,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:06:30,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:06:30,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:06:30,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:06:30,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:06:30,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:06:30,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:06:30,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:06:30,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:06:30,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:06:30,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:06:30,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:06:30,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:06:30,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:06:30,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:06:30,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:06:30,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:06:30,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:06:30,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:06:30,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:06:31,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:06:31,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:06:31,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:06:31,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:06:31,230 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:06:31,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2020-12-22 06:06:31,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165d28b32/4b3b3eeb8cc34a778d95372a508fa6ec/FLAG80ac246ce [2020-12-22 06:06:32,097 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:06:32,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product27.cil.c [2020-12-22 06:06:32,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165d28b32/4b3b3eeb8cc34a778d95372a508fa6ec/FLAG80ac246ce [2020-12-22 06:06:32,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165d28b32/4b3b3eeb8cc34a778d95372a508fa6ec [2020-12-22 06:06:32,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:06:32,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:06:32,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:32,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:06:32,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:06:32,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:32" (1/1) ... [2020-12-22 06:06:32,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56221554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:32, skipping insertion in model container [2020-12-22 06:06:32,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:32" (1/1) ... [2020-12-22 06:06:32,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:06:32,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:06:32,712 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_spec2_product27.cil.c[16170,16183] [2020-12-22 06:06:33,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:33,045 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:06:33,087 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_spec2_product27.cil.c[16170,16183] [2020-12-22 06:06:33,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:33,227 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:06:33,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33 WrapperNode [2020-12-22 06:06:33,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:33,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:33,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:06:33,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:06:33,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:33,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:06:33,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:06:33,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:06:33,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... [2020-12-22 06:06:33,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:06:33,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:06:33,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:06:33,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:06:33,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:06:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:06:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:06:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:06:34,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:06:40,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:06:40,003 INFO L299 CfgBuilder]: Removed 661 assume(true) statements. [2020-12-22 06:06:40,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:40 BoogieIcfgContainer [2020-12-22 06:06:40,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:06:40,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:06:40,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:06:40,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:06:40,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:06:32" (1/3) ... [2020-12-22 06:06:40,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6392a152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:40, skipping insertion in model container [2020-12-22 06:06:40,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:33" (2/3) ... [2020-12-22 06:06:40,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6392a152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:40, skipping insertion in model container [2020-12-22 06:06:40,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:40" (3/3) ... [2020-12-22 06:06:40,019 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2020-12-22 06:06:40,027 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:06:40,034 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:06:40,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:06:40,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:06:40,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:06:40,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:06:40,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:06:40,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:06:40,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:06:40,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:06:40,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:06:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states. [2020-12-22 06:06:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:06:40,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:40,193 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] [2020-12-22 06:06:40,194 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 06:06:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:40,201 INFO L82 PathProgramCache]: Analyzing trace with hash 257781798, now seen corresponding path program 1 times [2020-12-22 06:06:40,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114559069] [2020-12-22 06:06:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:40,725 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 06:06:40,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114559069] [2020-12-22 06:06:40,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:40,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:40,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731197858] [2020-12-22 06:06:40,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:40,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:40,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:40,752 INFO L87 Difference]: Start difference. First operand 2604 states. Second operand 3 states. [2020-12-22 06:06:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:41,011 INFO L93 Difference]: Finished difference Result 5199 states and 9765 transitions. [2020-12-22 06:06:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:41,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:06:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:41,072 INFO L225 Difference]: With dead ends: 5199 [2020-12-22 06:06:41,072 INFO L226 Difference]: Without dead ends: 2600 [2020-12-22 06:06:41,086 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 06:06:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2020-12-22 06:06:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2600. [2020-12-22 06:06:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-12-22 06:06:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 4873 transitions. [2020-12-22 06:06:41,281 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 4873 transitions. Word has length 44 [2020-12-22 06:06:41,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:41,281 INFO L481 AbstractCegarLoop]: Abstraction has 2600 states and 4873 transitions. [2020-12-22 06:06:41,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 4873 transitions. [2020-12-22 06:06:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:06:41,295 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:41,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:41,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:06:41,297 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 06:06:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 47999, now seen corresponding path program 1 times [2020-12-22 06:06:41,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:41,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531212284] [2020-12-22 06:06:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:41,515 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 06:06:41,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531212284] [2020-12-22 06:06:41,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:41,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:06:41,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153405739] [2020-12-22 06:06:41,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:06:41,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:41,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:06:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:06:41,521 INFO L87 Difference]: Start difference. First operand 2600 states and 4873 transitions. Second operand 6 states. [2020-12-22 06:06:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:41,804 INFO L93 Difference]: Finished difference Result 5151 states and 9662 transitions. [2020-12-22 06:06:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:41,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 06:06:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:41,821 INFO L225 Difference]: With dead ends: 5151 [2020-12-22 06:06:41,821 INFO L226 Difference]: Without dead ends: 2594 [2020-12-22 06:06:41,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:06:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-12-22 06:06:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2594. [2020-12-22 06:06:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-12-22 06:06:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4860 transitions. [2020-12-22 06:06:41,926 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4860 transitions. Word has length 51 [2020-12-22 06:06:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:41,927 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 4860 transitions. [2020-12-22 06:06:41,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:06:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4860 transitions. [2020-12-22 06:06:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:06:41,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:41,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:41,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:06:41,935 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 06:06:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:41,938 INFO L82 PathProgramCache]: Analyzing trace with hash -311834335, now seen corresponding path program 1 times [2020-12-22 06:06:41,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:41,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184449332] [2020-12-22 06:06:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:42,075 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 06:06:42,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184449332] [2020-12-22 06:06:42,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:42,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:42,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700102760] [2020-12-22 06:06:42,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:42,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:42,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:42,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:42,078 INFO L87 Difference]: Start difference. First operand 2594 states and 4860 transitions. Second operand 4 states. [2020-12-22 06:06:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:42,379 INFO L93 Difference]: Finished difference Result 5145 states and 9649 transitions. [2020-12-22 06:06:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:42,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:06:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:42,396 INFO L225 Difference]: With dead ends: 5145 [2020-12-22 06:06:42,396 INFO L226 Difference]: Without dead ends: 2594 [2020-12-22 06:06:42,403 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 06:06:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-12-22 06:06:42,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2594. [2020-12-22 06:06:42,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-12-22 06:06:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4856 transitions. [2020-12-22 06:06:42,502 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4856 transitions. Word has length 52 [2020-12-22 06:06:42,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:42,510 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 4856 transitions. [2020-12-22 06:06:42,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4856 transitions. [2020-12-22 06:06:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:06:42,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:42,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:42,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:06:42,516 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 06:06:42,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:42,517 INFO L82 PathProgramCache]: Analyzing trace with hash 90553468, now seen corresponding path program 1 times [2020-12-22 06:06:42,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:42,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616479388] [2020-12-22 06:06:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:42,620 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 06:06:42,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616479388] [2020-12-22 06:06:42,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:42,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:42,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567935134] [2020-12-22 06:06:42,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:42,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:42,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:42,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:42,623 INFO L87 Difference]: Start difference. First operand 2594 states and 4856 transitions. Second operand 4 states. [2020-12-22 06:06:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:42,842 INFO L93 Difference]: Finished difference Result 5145 states and 9645 transitions. [2020-12-22 06:06:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:42,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:06:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:42,862 INFO L225 Difference]: With dead ends: 5145 [2020-12-22 06:06:42,862 INFO L226 Difference]: Without dead ends: 2594 [2020-12-22 06:06:42,868 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 06:06:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-12-22 06:06:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2594. [2020-12-22 06:06:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-12-22 06:06:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4852 transitions. [2020-12-22 06:06:43,025 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4852 transitions. Word has length 53 [2020-12-22 06:06:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:43,027 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 4852 transitions. [2020-12-22 06:06:43,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4852 transitions. [2020-12-22 06:06:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:06:43,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:43,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:43,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:06:43,034 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 06:06:43,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash 841240156, now seen corresponding path program 1 times [2020-12-22 06:06:43,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:43,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733974641] [2020-12-22 06:06:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:43,162 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 06:06:43,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733974641] [2020-12-22 06:06:43,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:43,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:43,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859603057] [2020-12-22 06:06:43,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:43,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:43,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:43,166 INFO L87 Difference]: Start difference. First operand 2594 states and 4852 transitions. Second operand 4 states. [2020-12-22 06:06:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:43,378 INFO L93 Difference]: Finished difference Result 5145 states and 9641 transitions. [2020-12-22 06:06:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:43,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:06:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:43,395 INFO L225 Difference]: With dead ends: 5145 [2020-12-22 06:06:43,396 INFO L226 Difference]: Without dead ends: 2594 [2020-12-22 06:06:43,401 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 06:06:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2020-12-22 06:06:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2594. [2020-12-22 06:06:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-12-22 06:06:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4848 transitions. [2020-12-22 06:06:43,508 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4848 transitions. Word has length 54 [2020-12-22 06:06:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:43,509 INFO L481 AbstractCegarLoop]: Abstraction has 2594 states and 4848 transitions. [2020-12-22 06:06:43,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4848 transitions. [2020-12-22 06:06:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:06:43,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:43,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:43,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:06:43,514 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 06:06:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:43,515 INFO L82 PathProgramCache]: Analyzing trace with hash -623967780, now seen corresponding path program 1 times [2020-12-22 06:06:43,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:43,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556654701] [2020-12-22 06:06:43,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:43,694 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 06:06:43,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556654701] [2020-12-22 06:06:43,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:43,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:43,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470405288] [2020-12-22 06:06:43,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:43,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:43,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:43,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:43,697 INFO L87 Difference]: Start difference. First operand 2594 states and 4848 transitions. Second operand 4 states. [2020-12-22 06:06:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:43,846 INFO L93 Difference]: Finished difference Result 5145 states and 9637 transitions. [2020-12-22 06:06:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:43,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:06:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:43,862 INFO L225 Difference]: With dead ends: 5145 [2020-12-22 06:06:43,862 INFO L226 Difference]: Without dead ends: 2573 [2020-12-22 06:06:43,868 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 06:06:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2020-12-22 06:06:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2020-12-22 06:06:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4814 transitions. [2020-12-22 06:06:43,995 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4814 transitions. Word has length 54 [2020-12-22 06:06:43,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:43,995 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4814 transitions. [2020-12-22 06:06:43,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4814 transitions. [2020-12-22 06:06:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:06:43,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:43,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:43,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:06:43,999 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 06:06:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash -495709609, now seen corresponding path program 1 times [2020-12-22 06:06:44,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:44,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667584197] [2020-12-22 06:06:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:44,095 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 06:06:44,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667584197] [2020-12-22 06:06:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:44,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:44,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461505998] [2020-12-22 06:06:44,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:44,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:44,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:44,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:44,098 INFO L87 Difference]: Start difference. First operand 2573 states and 4814 transitions. Second operand 4 states. [2020-12-22 06:06:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:44,257 INFO L93 Difference]: Finished difference Result 5124 states and 9603 transitions. [2020-12-22 06:06:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:44,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:06:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:44,273 INFO L225 Difference]: With dead ends: 5124 [2020-12-22 06:06:44,273 INFO L226 Difference]: Without dead ends: 2573 [2020-12-22 06:06:44,280 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 06:06:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2020-12-22 06:06:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2020-12-22 06:06:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4813 transitions. [2020-12-22 06:06:44,398 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4813 transitions. Word has length 55 [2020-12-22 06:06:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:44,399 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4813 transitions. [2020-12-22 06:06:44,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4813 transitions. [2020-12-22 06:06:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:06:44,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:44,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:44,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:06:44,402 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 06:06:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:44,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2124879977, now seen corresponding path program 1 times [2020-12-22 06:06:44,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:44,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303341169] [2020-12-22 06:06:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:44,495 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 06:06:44,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303341169] [2020-12-22 06:06:44,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:44,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:44,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846371573] [2020-12-22 06:06:44,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:44,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:44,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:44,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:44,499 INFO L87 Difference]: Start difference. First operand 2573 states and 4813 transitions. Second operand 4 states. [2020-12-22 06:06:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:44,655 INFO L93 Difference]: Finished difference Result 5124 states and 9602 transitions. [2020-12-22 06:06:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:44,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:06:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:44,672 INFO L225 Difference]: With dead ends: 5124 [2020-12-22 06:06:44,673 INFO L226 Difference]: Without dead ends: 2573 [2020-12-22 06:06:44,678 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 06:06:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2020-12-22 06:06:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2020-12-22 06:06:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4812 transitions. [2020-12-22 06:06:44,834 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4812 transitions. Word has length 56 [2020-12-22 06:06:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:44,836 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4812 transitions. [2020-12-22 06:06:44,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4812 transitions. [2020-12-22 06:06:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:06:44,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:44,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:44,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:06:44,839 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 06:06:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash 72012850, now seen corresponding path program 1 times [2020-12-22 06:06:44,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:44,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709521152] [2020-12-22 06:06:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:44,974 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 06:06:44,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709521152] [2020-12-22 06:06:44,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:44,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:06:44,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606459206] [2020-12-22 06:06:44,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:06:44,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:44,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:06:44,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:06:44,982 INFO L87 Difference]: Start difference. First operand 2573 states and 4812 transitions. Second operand 7 states. [2020-12-22 06:06:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:45,250 INFO L93 Difference]: Finished difference Result 5118 states and 9590 transitions. [2020-12-22 06:06:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:06:45,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-12-22 06:06:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:45,284 INFO L225 Difference]: With dead ends: 5118 [2020-12-22 06:06:45,284 INFO L226 Difference]: Without dead ends: 2573 [2020-12-22 06:06:45,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:06:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2020-12-22 06:06:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2020-12-22 06:06:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4811 transitions. [2020-12-22 06:06:45,407 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4811 transitions. Word has length 57 [2020-12-22 06:06:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:45,408 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4811 transitions. [2020-12-22 06:06:45,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:06:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4811 transitions. [2020-12-22 06:06:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:06:45,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:45,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:45,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:06:45,411 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 06:06:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:45,412 INFO L82 PathProgramCache]: Analyzing trace with hash 612874754, now seen corresponding path program 1 times [2020-12-22 06:06:45,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323615009] [2020-12-22 06:06:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:45,553 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 06:06:45,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323615009] [2020-12-22 06:06:45,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:45,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:45,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916644877] [2020-12-22 06:06:45,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:45,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:45,556 INFO L87 Difference]: Start difference. First operand 2573 states and 4811 transitions. Second operand 4 states. [2020-12-22 06:06:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:47,042 INFO L93 Difference]: Finished difference Result 7185 states and 13494 transitions. [2020-12-22 06:06:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:47,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:06:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:47,060 INFO L225 Difference]: With dead ends: 7185 [2020-12-22 06:06:47,061 INFO L226 Difference]: Without dead ends: 4646 [2020-12-22 06:06:47,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-12-22 06:06:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 2573. [2020-12-22 06:06:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4805 transitions. [2020-12-22 06:06:47,245 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4805 transitions. Word has length 58 [2020-12-22 06:06:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:47,245 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4805 transitions. [2020-12-22 06:06:47,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4805 transitions. [2020-12-22 06:06:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:06:47,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:47,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:47,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:06:47,249 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 06:06:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:47,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1552617722, now seen corresponding path program 1 times [2020-12-22 06:06:47,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:47,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45014894] [2020-12-22 06:06:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:47,366 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 06:06:47,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45014894] [2020-12-22 06:06:47,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:47,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:47,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526407037] [2020-12-22 06:06:47,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:47,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:47,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:47,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:47,370 INFO L87 Difference]: Start difference. First operand 2573 states and 4805 transitions. Second operand 4 states. [2020-12-22 06:06:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:48,684 INFO L93 Difference]: Finished difference Result 7185 states and 13483 transitions. [2020-12-22 06:06:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:48,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:06:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:48,698 INFO L225 Difference]: With dead ends: 7185 [2020-12-22 06:06:48,699 INFO L226 Difference]: Without dead ends: 4646 [2020-12-22 06:06:48,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-12-22 06:06:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 2573. [2020-12-22 06:06:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4799 transitions. [2020-12-22 06:06:48,927 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4799 transitions. Word has length 60 [2020-12-22 06:06:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:48,928 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4799 transitions. [2020-12-22 06:06:48,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4799 transitions. [2020-12-22 06:06:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:06:48,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:48,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:48,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:06:48,940 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 06:06:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:48,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1194597832, now seen corresponding path program 1 times [2020-12-22 06:06:48,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:48,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637290537] [2020-12-22 06:06:48,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:49,038 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 06:06:49,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637290537] [2020-12-22 06:06:49,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:49,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:49,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521301743] [2020-12-22 06:06:49,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:49,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:49,040 INFO L87 Difference]: Start difference. First operand 2573 states and 4799 transitions. Second operand 4 states. [2020-12-22 06:06:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:50,294 INFO L93 Difference]: Finished difference Result 7185 states and 13472 transitions. [2020-12-22 06:06:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:50,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:06:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:50,310 INFO L225 Difference]: With dead ends: 7185 [2020-12-22 06:06:50,310 INFO L226 Difference]: Without dead ends: 4646 [2020-12-22 06:06:50,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-12-22 06:06:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 2573. [2020-12-22 06:06:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4793 transitions. [2020-12-22 06:06:50,457 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4793 transitions. Word has length 62 [2020-12-22 06:06:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:50,458 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4793 transitions. [2020-12-22 06:06:50,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4793 transitions. [2020-12-22 06:06:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:06:50,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:50,461 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 06:06:50,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:06:50,461 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 06:06:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1491045478, now seen corresponding path program 1 times [2020-12-22 06:06:50,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:50,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616903882] [2020-12-22 06:06:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:50,553 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 06:06:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616903882] [2020-12-22 06:06:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:50,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438101389] [2020-12-22 06:06:50,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:50,556 INFO L87 Difference]: Start difference. First operand 2573 states and 4793 transitions. Second operand 4 states. [2020-12-22 06:06:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:51,815 INFO L93 Difference]: Finished difference Result 7185 states and 13461 transitions. [2020-12-22 06:06:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:51,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:06:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:51,839 INFO L225 Difference]: With dead ends: 7185 [2020-12-22 06:06:51,839 INFO L226 Difference]: Without dead ends: 4646 [2020-12-22 06:06:51,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-12-22 06:06:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 2573. [2020-12-22 06:06:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-12-22 06:06:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4787 transitions. [2020-12-22 06:06:51,997 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4787 transitions. Word has length 64 [2020-12-22 06:06:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:51,999 INFO L481 AbstractCegarLoop]: Abstraction has 2573 states and 4787 transitions. [2020-12-22 06:06:51,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4787 transitions. [2020-12-22 06:06:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:06:52,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:52,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:52,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:06:52,002 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 06:06:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:52,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1261522158, now seen corresponding path program 1 times [2020-12-22 06:06:52,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:52,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056409321] [2020-12-22 06:06:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:52,080 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 06:06:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056409321] [2020-12-22 06:06:52,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:52,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:52,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178872687] [2020-12-22 06:06:52,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:52,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:52,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:52,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:52,082 INFO L87 Difference]: Start difference. First operand 2573 states and 4787 transitions. Second operand 3 states. [2020-12-22 06:06:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:52,341 INFO L93 Difference]: Finished difference Result 5802 states and 10837 transitions. [2020-12-22 06:06:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:52,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:06:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:52,356 INFO L225 Difference]: With dead ends: 5802 [2020-12-22 06:06:52,359 INFO L226 Difference]: Without dead ends: 4479 [2020-12-22 06:06:52,364 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 06:06:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4479 states. [2020-12-22 06:06:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4479 to 4479. [2020-12-22 06:06:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4479 states. [2020-12-22 06:06:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 8375 transitions. [2020-12-22 06:06:52,596 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 8375 transitions. Word has length 66 [2020-12-22 06:06:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:52,597 INFO L481 AbstractCegarLoop]: Abstraction has 4479 states and 8375 transitions. [2020-12-22 06:06:52,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 8375 transitions. [2020-12-22 06:06:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:06:52,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:52,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:52,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:06:52,601 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 06:06:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2053140437, now seen corresponding path program 1 times [2020-12-22 06:06:52,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:52,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027604679] [2020-12-22 06:06:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:52,703 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 06:06:52,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027604679] [2020-12-22 06:06:52,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:52,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:52,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457431776] [2020-12-22 06:06:52,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:52,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:52,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:52,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:52,706 INFO L87 Difference]: Start difference. First operand 4479 states and 8375 transitions. Second operand 3 states. [2020-12-22 06:06:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:53,155 INFO L93 Difference]: Finished difference Result 10799 states and 20221 transitions. [2020-12-22 06:06:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:53,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:06:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:53,189 INFO L225 Difference]: With dead ends: 10799 [2020-12-22 06:06:53,189 INFO L226 Difference]: Without dead ends: 8177 [2020-12-22 06:06:53,197 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 06:06:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2020-12-22 06:06:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8175. [2020-12-22 06:06:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8175 states. [2020-12-22 06:06:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8175 states to 8175 states and 15328 transitions. [2020-12-22 06:06:53,597 INFO L78 Accepts]: Start accepts. Automaton has 8175 states and 15328 transitions. Word has length 68 [2020-12-22 06:06:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:53,598 INFO L481 AbstractCegarLoop]: Abstraction has 8175 states and 15328 transitions. [2020-12-22 06:06:53,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8175 states and 15328 transitions. [2020-12-22 06:06:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:06:53,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:53,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:53,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:06:53,602 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 06:06:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:53,603 INFO L82 PathProgramCache]: Analyzing trace with hash -407428290, now seen corresponding path program 1 times [2020-12-22 06:06:53,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:53,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307951062] [2020-12-22 06:06:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:53,728 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 06:06:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307951062] [2020-12-22 06:06:53,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:53,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:53,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152097054] [2020-12-22 06:06:53,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:53,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:53,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:53,731 INFO L87 Difference]: Start difference. First operand 8175 states and 15328 transitions. Second operand 3 states. [2020-12-22 06:06:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:54,450 INFO L93 Difference]: Finished difference Result 20549 states and 38524 transitions. [2020-12-22 06:06:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:54,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:06:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:54,496 INFO L225 Difference]: With dead ends: 20549 [2020-12-22 06:06:54,496 INFO L226 Difference]: Without dead ends: 15338 [2020-12-22 06:06:54,507 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 06:06:54,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2020-12-22 06:06:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 15334. [2020-12-22 06:06:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15334 states. [2020-12-22 06:06:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15334 states to 15334 states and 28786 transitions. [2020-12-22 06:06:55,278 INFO L78 Accepts]: Start accepts. Automaton has 15334 states and 28786 transitions. Word has length 69 [2020-12-22 06:06:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:55,279 INFO L481 AbstractCegarLoop]: Abstraction has 15334 states and 28786 transitions. [2020-12-22 06:06:55,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 15334 states and 28786 transitions. [2020-12-22 06:06:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:06:55,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:55,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:55,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:06:55,284 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 06:06:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:55,284 INFO L82 PathProgramCache]: Analyzing trace with hash 254643282, now seen corresponding path program 1 times [2020-12-22 06:06:55,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:55,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60307903] [2020-12-22 06:06:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:55,380 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 06:06:55,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60307903] [2020-12-22 06:06:55,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:55,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:55,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844626140] [2020-12-22 06:06:55,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:55,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:55,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:55,383 INFO L87 Difference]: Start difference. First operand 15334 states and 28786 transitions. Second operand 3 states. [2020-12-22 06:06:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:56,536 INFO L93 Difference]: Finished difference Result 39561 states and 74197 transitions. [2020-12-22 06:06:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:56,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:06:56,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:56,622 INFO L225 Difference]: With dead ends: 39561 [2020-12-22 06:06:56,623 INFO L226 Difference]: Without dead ends: 29191 [2020-12-22 06:06:56,645 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 06:06:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2020-12-22 06:06:57,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 29185. [2020-12-22 06:06:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29185 states. [2020-12-22 06:06:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29185 states to 29185 states and 54804 transitions. [2020-12-22 06:06:58,018 INFO L78 Accepts]: Start accepts. Automaton has 29185 states and 54804 transitions. Word has length 70 [2020-12-22 06:06:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:58,018 INFO L481 AbstractCegarLoop]: Abstraction has 29185 states and 54804 transitions. [2020-12-22 06:06:58,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 29185 states and 54804 transitions. [2020-12-22 06:06:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:06:58,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:58,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:58,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:06:58,027 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 06:06:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:58,028 INFO L82 PathProgramCache]: Analyzing trace with hash -695974457, now seen corresponding path program 1 times [2020-12-22 06:06:58,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:58,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770839969] [2020-12-22 06:06:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:58,106 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 06:06:58,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770839969] [2020-12-22 06:06:58,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:58,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:58,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069532608] [2020-12-22 06:06:58,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:58,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:58,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:58,111 INFO L87 Difference]: Start difference. First operand 29185 states and 54804 transitions. Second operand 3 states. [2020-12-22 06:07:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:00,185 INFO L93 Difference]: Finished difference Result 76609 states and 143673 transitions. [2020-12-22 06:07:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:00,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:07:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:00,399 INFO L225 Difference]: With dead ends: 76609 [2020-12-22 06:07:00,400 INFO L226 Difference]: Without dead ends: 55955 [2020-12-22 06:07:00,449 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 06:07:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55955 states. [2020-12-22 06:07:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55955 to 55947. [2020-12-22 06:07:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55947 states. [2020-12-22 06:07:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55947 states to 55947 states and 105030 transitions. [2020-12-22 06:07:03,316 INFO L78 Accepts]: Start accepts. Automaton has 55947 states and 105030 transitions. Word has length 71 [2020-12-22 06:07:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 55947 states and 105030 transitions. [2020-12-22 06:07:03,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:03,323 INFO L276 IsEmpty]: Start isEmpty. Operand 55947 states and 105030 transitions. [2020-12-22 06:07:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:07:03,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:03,351 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] [2020-12-22 06:07:03,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:07:03,351 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 06:07:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:03,352 INFO L82 PathProgramCache]: Analyzing trace with hash 463989079, now seen corresponding path program 1 times [2020-12-22 06:07:03,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:03,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581917103] [2020-12-22 06:07:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:03,438 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 06:07:03,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581917103] [2020-12-22 06:07:03,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:03,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:03,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799479843] [2020-12-22 06:07:03,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:03,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:03,443 INFO L87 Difference]: Start difference. First operand 55947 states and 105030 transitions. Second operand 4 states. [2020-12-22 06:07:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:06,062 INFO L93 Difference]: Finished difference Result 125713 states and 234901 transitions. [2020-12-22 06:07:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:06,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 06:07:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:06,218 INFO L225 Difference]: With dead ends: 125713 [2020-12-22 06:07:06,218 INFO L226 Difference]: Without dead ends: 70130 [2020-12-22 06:07:06,312 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 06:07:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70130 states. [2020-12-22 06:07:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70130 to 56013. [2020-12-22 06:07:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56013 states. [2020-12-22 06:07:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56013 states to 56013 states and 105096 transitions. [2020-12-22 06:07:08,813 INFO L78 Accepts]: Start accepts. Automaton has 56013 states and 105096 transitions. Word has length 105 [2020-12-22 06:07:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:08,814 INFO L481 AbstractCegarLoop]: Abstraction has 56013 states and 105096 transitions. [2020-12-22 06:07:08,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 56013 states and 105096 transitions. [2020-12-22 06:07:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:07:08,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:08,836 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] [2020-12-22 06:07:08,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:07:08,836 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 06:07:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1691268297, now seen corresponding path program 1 times [2020-12-22 06:07:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:08,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214882754] [2020-12-22 06:07:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:08,941 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 06:07:08,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214882754] [2020-12-22 06:07:08,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:08,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:08,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908719167] [2020-12-22 06:07:08,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:08,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:08,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:08,944 INFO L87 Difference]: Start difference. First operand 56013 states and 105096 transitions. Second operand 5 states. [2020-12-22 06:07:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:16,310 INFO L93 Difference]: Finished difference Result 225751 states and 422325 transitions. [2020-12-22 06:07:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:07:16,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:07:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:16,787 INFO L225 Difference]: With dead ends: 225751 [2020-12-22 06:07:16,788 INFO L226 Difference]: Without dead ends: 169807 [2020-12-22 06:07:16,869 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 06:07:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169807 states. [2020-12-22 06:07:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169807 to 56145. [2020-12-22 06:07:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56145 states. [2020-12-22 06:07:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56145 states to 56145 states and 105228 transitions. [2020-12-22 06:07:20,064 INFO L78 Accepts]: Start accepts. Automaton has 56145 states and 105228 transitions. Word has length 107 [2020-12-22 06:07:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:20,064 INFO L481 AbstractCegarLoop]: Abstraction has 56145 states and 105228 transitions. [2020-12-22 06:07:20,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 56145 states and 105228 transitions. [2020-12-22 06:07:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:07:20,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:20,085 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] [2020-12-22 06:07:20,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:07:20,085 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 06:07:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1710624468, now seen corresponding path program 1 times [2020-12-22 06:07:20,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:20,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123006691] [2020-12-22 06:07:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:20,221 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 06:07:20,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123006691] [2020-12-22 06:07:20,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:20,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:20,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856485266] [2020-12-22 06:07:20,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:20,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:20,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:20,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:20,225 INFO L87 Difference]: Start difference. First operand 56145 states and 105228 transitions. Second operand 4 states. [2020-12-22 06:07:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:25,770 INFO L93 Difference]: Finished difference Result 149888 states and 280465 transitions. [2020-12-22 06:07:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:25,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-12-22 06:07:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:25,947 INFO L225 Difference]: With dead ends: 149888 [2020-12-22 06:07:25,947 INFO L226 Difference]: Without dead ends: 93798 [2020-12-22 06:07:25,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93798 states. [2020-12-22 06:07:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93798 to 87998. [2020-12-22 06:07:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87998 states. [2020-12-22 06:07:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87998 states to 87998 states and 164921 transitions. [2020-12-22 06:07:29,665 INFO L78 Accepts]: Start accepts. Automaton has 87998 states and 164921 transitions. Word has length 108 [2020-12-22 06:07:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:29,666 INFO L481 AbstractCegarLoop]: Abstraction has 87998 states and 164921 transitions. [2020-12-22 06:07:29,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 87998 states and 164921 transitions. [2020-12-22 06:07:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:07:29,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:29,681 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] [2020-12-22 06:07:29,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:07:29,681 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 06:07:29,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1501662428, now seen corresponding path program 1 times [2020-12-22 06:07:29,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:29,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318579621] [2020-12-22 06:07:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:29,799 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 06:07:29,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318579621] [2020-12-22 06:07:29,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:29,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:29,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376338058] [2020-12-22 06:07:29,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:29,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:29,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:29,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:29,802 INFO L87 Difference]: Start difference. First operand 87998 states and 164921 transitions. Second operand 4 states. [2020-12-22 06:07:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:35,503 INFO L93 Difference]: Finished difference Result 181741 states and 340094 transitions. [2020-12-22 06:07:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:35,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-22 06:07:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:35,674 INFO L225 Difference]: With dead ends: 181741 [2020-12-22 06:07:35,674 INFO L226 Difference]: Without dead ends: 93798 [2020-12-22 06:07:35,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93798 states. [2020-12-22 06:07:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93798 to 87998. [2020-12-22 06:07:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87998 states. [2020-12-22 06:07:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87998 states to 87998 states and 164855 transitions. [2020-12-22 06:07:39,326 INFO L78 Accepts]: Start accepts. Automaton has 87998 states and 164855 transitions. Word has length 109 [2020-12-22 06:07:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:39,327 INFO L481 AbstractCegarLoop]: Abstraction has 87998 states and 164855 transitions. [2020-12-22 06:07:39,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 87998 states and 164855 transitions. [2020-12-22 06:07:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:07:39,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:39,340 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] [2020-12-22 06:07:39,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:07:39,340 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 06:07:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash -21803932, now seen corresponding path program 1 times [2020-12-22 06:07:39,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:39,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458174647] [2020-12-22 06:07:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:39,425 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 06:07:39,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458174647] [2020-12-22 06:07:39,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:39,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:39,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815270801] [2020-12-22 06:07:39,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:39,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:39,432 INFO L87 Difference]: Start difference. First operand 87998 states and 164855 transitions. Second operand 5 states. [2020-12-22 06:07:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:59,168 INFO L93 Difference]: Finished difference Result 742387 states and 1391742 transitions. [2020-12-22 06:07:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:07:59,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:07:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:01,075 INFO L225 Difference]: With dead ends: 742387 [2020-12-22 06:08:01,075 INFO L226 Difference]: Without dead ends: 654462 [2020-12-22 06:08:01,290 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 06:08:01,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654462 states. [2020-12-22 06:08:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654462 to 173699. [2020-12-22 06:08:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173699 states. [2020-12-22 06:08:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173699 states to 173699 states and 324844 transitions. [2020-12-22 06:08:13,630 INFO L78 Accepts]: Start accepts. Automaton has 173699 states and 324844 transitions. Word has length 110 [2020-12-22 06:08:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:13,630 INFO L481 AbstractCegarLoop]: Abstraction has 173699 states and 324844 transitions. [2020-12-22 06:08:13,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 173699 states and 324844 transitions. [2020-12-22 06:08:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:08:13,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:13,667 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] [2020-12-22 06:08:13,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:08:13,668 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 06:08:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash -989154586, now seen corresponding path program 1 times [2020-12-22 06:08:13,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:13,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628489967] [2020-12-22 06:08:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:13,752 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 06:08:13,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628489967] [2020-12-22 06:08:13,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:13,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437059294] [2020-12-22 06:08:13,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:13,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:13,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:13,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:13,757 INFO L87 Difference]: Start difference. First operand 173699 states and 324844 transitions. Second operand 5 states. [2020-12-22 06:08:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:23,527 INFO L93 Difference]: Finished difference Result 396404 states and 737071 transitions. [2020-12-22 06:08:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:08:23,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:08:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:24,014 INFO L225 Difference]: With dead ends: 396404 [2020-12-22 06:08:24,014 INFO L226 Difference]: Without dead ends: 223092 [2020-12-22 06:08:24,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:08:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223092 states. [2020-12-22 06:08:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223092 to 173573. [2020-12-22 06:08:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173573 states. [2020-12-22 06:08:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173573 states to 173573 states and 324718 transitions. [2020-12-22 06:08:32,225 INFO L78 Accepts]: Start accepts. Automaton has 173573 states and 324718 transitions. Word has length 110 [2020-12-22 06:08:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:32,225 INFO L481 AbstractCegarLoop]: Abstraction has 173573 states and 324718 transitions. [2020-12-22 06:08:32,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:08:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 173573 states and 324718 transitions. [2020-12-22 06:08:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:08:32,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:32,249 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] [2020-12-22 06:08:32,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:08:32,249 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 06:08:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:32,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1815669297, now seen corresponding path program 1 times [2020-12-22 06:08:32,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:32,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350931965] [2020-12-22 06:08:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:32,358 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 06:08:32,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350931965] [2020-12-22 06:08:32,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:32,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:32,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419651755] [2020-12-22 06:08:32,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:32,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:32,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:32,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:32,361 INFO L87 Difference]: Start difference. First operand 173573 states and 324718 transitions. Second operand 4 states. [2020-12-22 06:08:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:42,674 INFO L93 Difference]: Finished difference Result 359071 states and 670286 transitions. [2020-12-22 06:08:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:08:42,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-12-22 06:08:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:43,029 INFO L225 Difference]: With dead ends: 359071 [2020-12-22 06:08:43,029 INFO L226 Difference]: Without dead ends: 185551 [2020-12-22 06:08:43,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185551 states. [2020-12-22 06:08:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185551 to 173573. [2020-12-22 06:08:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173573 states. [2020-12-22 06:08:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173573 states to 173573 states and 324588 transitions. [2020-12-22 06:08:50,908 INFO L78 Accepts]: Start accepts. Automaton has 173573 states and 324588 transitions. Word has length 110 [2020-12-22 06:08:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:50,908 INFO L481 AbstractCegarLoop]: Abstraction has 173573 states and 324588 transitions. [2020-12-22 06:08:50,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 173573 states and 324588 transitions. [2020-12-22 06:08:50,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:08:50,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:50,929 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] [2020-12-22 06:08:50,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:08:50,930 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 06:08:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:50,930 INFO L82 PathProgramCache]: Analyzing trace with hash 205422015, now seen corresponding path program 1 times [2020-12-22 06:08:50,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:50,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480734606] [2020-12-22 06:08:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:51,006 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 06:08:51,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480734606] [2020-12-22 06:08:51,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:51,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:51,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843290379] [2020-12-22 06:08:51,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:51,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:51,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:51,009 INFO L87 Difference]: Start difference. First operand 173573 states and 324588 transitions. Second operand 5 states. [2020-12-22 06:09:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:05,434 INFO L93 Difference]: Finished difference Result 425197 states and 789417 transitions. [2020-12-22 06:09:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:05,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-12-22 06:09:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:06,103 INFO L225 Difference]: With dead ends: 425197 [2020-12-22 06:09:06,103 INFO L226 Difference]: Without dead ends: 251665 [2020-12-22 06:09:06,242 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 06:09:06,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251665 states. [2020-12-22 06:09:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251665 to 151648. [2020-12-22 06:09:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151648 states. [2020-12-22 06:09:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151648 states to 151648 states and 280148 transitions. [2020-12-22 06:09:14,220 INFO L78 Accepts]: Start accepts. Automaton has 151648 states and 280148 transitions. Word has length 111 [2020-12-22 06:09:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:14,221 INFO L481 AbstractCegarLoop]: Abstraction has 151648 states and 280148 transitions. [2020-12-22 06:09:14,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 151648 states and 280148 transitions. [2020-12-22 06:09:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 06:09:14,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:14,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:14,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:09:14,246 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 06:09:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1144794549, now seen corresponding path program 1 times [2020-12-22 06:09:14,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:14,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385212673] [2020-12-22 06:09:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:14,345 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 06:09:14,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385212673] [2020-12-22 06:09:14,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:14,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:09:14,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691136005] [2020-12-22 06:09:14,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:14,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:14,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:14,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:14,347 INFO L87 Difference]: Start difference. First operand 151648 states and 280148 transitions. Second operand 5 states. [2020-12-22 06:09:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:35,521 INFO L93 Difference]: Finished difference Result 607943 states and 1121065 transitions. [2020-12-22 06:09:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:09:35,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-12-22 06:09:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:36,852 INFO L225 Difference]: With dead ends: 607943 [2020-12-22 06:09:36,852 INFO L226 Difference]: Without dead ends: 456516 [2020-12-22 06:09:37,126 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 06:09:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456516 states. [2020-12-22 06:09:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456516 to 151776. [2020-12-22 06:09:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151776 states. [2020-12-22 06:09:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151776 states to 151776 states and 280212 transitions. [2020-12-22 06:09:47,693 INFO L78 Accepts]: Start accepts. Automaton has 151776 states and 280212 transitions. Word has length 156 [2020-12-22 06:09:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:47,693 INFO L481 AbstractCegarLoop]: Abstraction has 151776 states and 280212 transitions. [2020-12-22 06:09:47,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 151776 states and 280212 transitions. [2020-12-22 06:09:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 06:09:47,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:47,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:47,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:09:47,720 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 06:09:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash 15246138, now seen corresponding path program 1 times [2020-12-22 06:09:47,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:47,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100640685] [2020-12-22 06:09:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:47,803 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 06:09:47,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100640685] [2020-12-22 06:09:47,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:47,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:47,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153686786] [2020-12-22 06:09:47,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:47,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:47,805 INFO L87 Difference]: Start difference. First operand 151776 states and 280212 transitions. Second operand 3 states. [2020-12-22 06:09:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:57,718 INFO L93 Difference]: Finished difference Result 318724 states and 585793 transitions. [2020-12-22 06:09:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:57,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 06:09:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:58,085 INFO L225 Difference]: With dead ends: 318724 [2020-12-22 06:09:58,086 INFO L226 Difference]: Without dead ends: 167169 [2020-12-22 06:09:58,189 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 06:09:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167169 states.