/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:06:38,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:06:38,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:06:38,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:06:38,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:06:38,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:06:38,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:06:38,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:06:38,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:06:38,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:06:38,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:06:38,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:06:38,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:06:38,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:06:38,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:06:38,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:06:38,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:06:38,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:06:38,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:06:38,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:06:38,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:06:38,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:06:38,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:06:38,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:06:38,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:06:38,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:06:38,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:06:38,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:06:38,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:06:38,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:06:38,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:06:38,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:06:38,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:06:38,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:06:38,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:06:38,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:06:38,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:06:38,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:06:38,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:06:38,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:06:38,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:06:38,363 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:06:38,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:06:38,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:06:38,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:06:38,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:06:38,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:06:38,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:06:38,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:06:38,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:06:38,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:06:38,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:06:38,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:06:38,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:06:38,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:06:38,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:06:38,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:06:38,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:06:38,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:06:38,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:06:38,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:06:38,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:06:38,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:06:38,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:06:38,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:06:38,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:06:38,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:06:38,799 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:06:38,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2020-12-22 06:06:38,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a412a824a/9707a24937e24f82a9a578b70de08c6c/FLAG2a87f1e69 [2020-12-22 06:06:39,833 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:06:39,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2020-12-22 06:06:39,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a412a824a/9707a24937e24f82a9a578b70de08c6c/FLAG2a87f1e69 [2020-12-22 06:06:39,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a412a824a/9707a24937e24f82a9a578b70de08c6c [2020-12-22 06:06:39,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:06:39,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:06:39,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:39,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:06:39,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:06:39,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:39" (1/1) ... [2020-12-22 06:06:39,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ca7b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:39, skipping insertion in model container [2020-12-22 06:06:39,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:06:39" (1/1) ... [2020-12-22 06:06:39,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:06:40,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:06:40,616 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_product28.cil.c[35657,35670] [2020-12-22 06:06:40,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:40,884 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:06:40,956 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_product28.cil.c[35657,35670] [2020-12-22 06:06:41,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:06:41,110 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:06:41,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41 WrapperNode [2020-12-22 06:06:41,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:06:41,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:41,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:06:41,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:06:41,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:06:41,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:06:41,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:06:41,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:06:41,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:41,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:42,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:42,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (1/1) ... [2020-12-22 06:06:42,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:06:42,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:06:42,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:06:42,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:06:42,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (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 06:06:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:06:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:06:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:06:42,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:06:51,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:06:51,852 INFO L299 CfgBuilder]: Removed 1245 assume(true) statements. [2020-12-22 06:06:51,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:51 BoogieIcfgContainer [2020-12-22 06:06:51,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:06:51,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:06:51,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:06:51,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:06:51,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:06:39" (1/3) ... [2020-12-22 06:06:51,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422329ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:51, skipping insertion in model container [2020-12-22 06:06:51,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:06:41" (2/3) ... [2020-12-22 06:06:51,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422329ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:06:51, skipping insertion in model container [2020-12-22 06:06:51,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:06:51" (3/3) ... [2020-12-22 06:06:51,878 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2020-12-22 06:06:51,886 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:06:51,894 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:06:51,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:06:51,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:06:51,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:06:51,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:06:51,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:06:51,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:06:51,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:06:51,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:06:51,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:06:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states. [2020-12-22 06:06:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:06:52,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:52,188 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] [2020-12-22 06:06:52,188 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 06:06:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash -424075637, now seen corresponding path program 1 times [2020-12-22 06:06:52,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:52,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001842775] [2020-12-22 06:06:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:52,692 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 06:06:52,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001842775] [2020-12-22 06:06:52,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:52,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:52,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157845086] [2020-12-22 06:06:52,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:52,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:52,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:52,722 INFO L87 Difference]: Start difference. First operand 5044 states. Second operand 3 states. [2020-12-22 06:06:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:53,078 INFO L93 Difference]: Finished difference Result 10079 states and 18985 transitions. [2020-12-22 06:06:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:53,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 06:06:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:53,150 INFO L225 Difference]: With dead ends: 10079 [2020-12-22 06:06:53,151 INFO L226 Difference]: Without dead ends: 5040 [2020-12-22 06:06:53,165 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 06:06:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2020-12-22 06:06:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5040. [2020-12-22 06:06:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5040 states. [2020-12-22 06:06:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 9483 transitions. [2020-12-22 06:06:53,429 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 9483 transitions. Word has length 27 [2020-12-22 06:06:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:53,429 INFO L481 AbstractCegarLoop]: Abstraction has 5040 states and 9483 transitions. [2020-12-22 06:06:53,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 9483 transitions. [2020-12-22 06:06:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:06:53,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:53,433 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] [2020-12-22 06:06:53,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:06:53,434 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 06:06:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1792455045, now seen corresponding path program 1 times [2020-12-22 06:06:53,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:53,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415422860] [2020-12-22 06:06:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:53,586 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 06:06:53,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415422860] [2020-12-22 06:06:53,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:53,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:53,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90702745] [2020-12-22 06:06:53,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:53,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:53,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:53,592 INFO L87 Difference]: Start difference. First operand 5040 states and 9483 transitions. Second operand 4 states. [2020-12-22 06:06:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:53,901 INFO L93 Difference]: Finished difference Result 10031 states and 18882 transitions. [2020-12-22 06:06:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:53,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:06:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:53,933 INFO L225 Difference]: With dead ends: 10031 [2020-12-22 06:06:53,933 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:53,946 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 06:06:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9427 transitions. [2020-12-22 06:06:54,141 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9427 transitions. Word has length 34 [2020-12-22 06:06:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9427 transitions. [2020-12-22 06:06:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9427 transitions. [2020-12-22 06:06:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:06:54,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:54,147 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] [2020-12-22 06:06:54,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:06:54,149 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 06:06:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:54,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1461689437, now seen corresponding path program 1 times [2020-12-22 06:06:54,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:54,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134252288] [2020-12-22 06:06:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:54,303 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 06:06:54,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134252288] [2020-12-22 06:06:54,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:54,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:54,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337604741] [2020-12-22 06:06:54,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:54,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:54,308 INFO L87 Difference]: Start difference. First operand 5013 states and 9427 transitions. Second operand 4 states. [2020-12-22 06:06:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:54,587 INFO L93 Difference]: Finished difference Result 10004 states and 18826 transitions. [2020-12-22 06:06:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:54,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:06:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:54,618 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:06:54,618 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:54,627 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 06:06:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:54,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9426 transitions. [2020-12-22 06:06:54,820 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9426 transitions. Word has length 35 [2020-12-22 06:06:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:54,828 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9426 transitions. [2020-12-22 06:06:54,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9426 transitions. [2020-12-22 06:06:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:06:54,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:54,833 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] [2020-12-22 06:06:54,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:06:54,833 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 06:06:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash -2079309080, now seen corresponding path program 1 times [2020-12-22 06:06:54,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:54,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676101991] [2020-12-22 06:06:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:54,947 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 06:06:54,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676101991] [2020-12-22 06:06:54,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:54,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:54,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061533986] [2020-12-22 06:06:54,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:54,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:54,951 INFO L87 Difference]: Start difference. First operand 5013 states and 9426 transitions. Second operand 4 states. [2020-12-22 06:06:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:55,230 INFO L93 Difference]: Finished difference Result 10004 states and 18825 transitions. [2020-12-22 06:06:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:55,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:06:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:55,260 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:06:55,261 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:55,270 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 06:06:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9425 transitions. [2020-12-22 06:06:55,578 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9425 transitions. Word has length 36 [2020-12-22 06:06:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:55,579 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9425 transitions. [2020-12-22 06:06:55,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9425 transitions. [2020-12-22 06:06:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:06:55,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:55,580 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] [2020-12-22 06:06:55,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:06:55,583 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 06:06:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash 321926408, now seen corresponding path program 1 times [2020-12-22 06:06:55,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:55,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154823980] [2020-12-22 06:06:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:55,660 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 06:06:55,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154823980] [2020-12-22 06:06:55,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:55,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:55,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110428016] [2020-12-22 06:06:55,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:55,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:55,663 INFO L87 Difference]: Start difference. First operand 5013 states and 9425 transitions. Second operand 4 states. [2020-12-22 06:06:55,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:55,901 INFO L93 Difference]: Finished difference Result 10004 states and 18824 transitions. [2020-12-22 06:06:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:55,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:06:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:55,945 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:06:55,946 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:55,955 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 06:06:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9424 transitions. [2020-12-22 06:06:56,142 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9424 transitions. Word has length 37 [2020-12-22 06:06:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:56,142 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9424 transitions. [2020-12-22 06:06:56,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9424 transitions. [2020-12-22 06:06:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:06:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:56,144 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] [2020-12-22 06:06:56,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:06:56,144 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 06:06:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1818390445, now seen corresponding path program 1 times [2020-12-22 06:06:56,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:56,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146263462] [2020-12-22 06:06:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:56,239 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 06:06:56,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146263462] [2020-12-22 06:06:56,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:56,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:56,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859194162] [2020-12-22 06:06:56,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:56,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:56,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:56,242 INFO L87 Difference]: Start difference. First operand 5013 states and 9424 transitions. Second operand 4 states. [2020-12-22 06:06:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:56,483 INFO L93 Difference]: Finished difference Result 10004 states and 18823 transitions. [2020-12-22 06:06:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:56,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 06:06:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:56,503 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:06:56,503 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:56,512 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 06:06:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9423 transitions. [2020-12-22 06:06:56,691 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9423 transitions. Word has length 38 [2020-12-22 06:06:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:56,691 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9423 transitions. [2020-12-22 06:06:56,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9423 transitions. [2020-12-22 06:06:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:06:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:56,693 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] [2020-12-22 06:06:56,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:06:56,693 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 06:06:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:56,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1036743277, now seen corresponding path program 1 times [2020-12-22 06:06:56,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:56,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654865791] [2020-12-22 06:06:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:56,791 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 06:06:56,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654865791] [2020-12-22 06:06:56,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:56,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:56,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895151459] [2020-12-22 06:06:56,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:56,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:56,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:56,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:56,796 INFO L87 Difference]: Start difference. First operand 5013 states and 9423 transitions. Second operand 4 states. [2020-12-22 06:06:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:57,014 INFO L93 Difference]: Finished difference Result 10004 states and 18822 transitions. [2020-12-22 06:06:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:57,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-22 06:06:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:57,029 INFO L225 Difference]: With dead ends: 10004 [2020-12-22 06:06:57,030 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:57,040 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 06:06:57,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9422 transitions. [2020-12-22 06:06:57,344 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9422 transitions. Word has length 39 [2020-12-22 06:06:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:57,344 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9422 transitions. [2020-12-22 06:06:57,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9422 transitions. [2020-12-22 06:06:57,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 06:06:57,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:57,347 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] [2020-12-22 06:06:57,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:06:57,348 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 06:06:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:57,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1646874510, now seen corresponding path program 1 times [2020-12-22 06:06:57,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:57,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173391509] [2020-12-22 06:06:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:57,447 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 06:06:57,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173391509] [2020-12-22 06:06:57,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:57,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:57,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974596213] [2020-12-22 06:06:57,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:57,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:57,451 INFO L87 Difference]: Start difference. First operand 5013 states and 9422 transitions. Second operand 4 states. [2020-12-22 06:06:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:57,698 INFO L93 Difference]: Finished difference Result 9998 states and 18810 transitions. [2020-12-22 06:06:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:06:57,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-22 06:06:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:57,713 INFO L225 Difference]: With dead ends: 9998 [2020-12-22 06:06:57,714 INFO L226 Difference]: Without dead ends: 5013 [2020-12-22 06:06:57,723 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 06:06:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2020-12-22 06:06:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2020-12-22 06:06:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5013 states. [2020-12-22 06:06:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9421 transitions. [2020-12-22 06:06:57,910 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9421 transitions. Word has length 40 [2020-12-22 06:06:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:57,913 INFO L481 AbstractCegarLoop]: Abstraction has 5013 states and 9421 transitions. [2020-12-22 06:06:57,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:06:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9421 transitions. [2020-12-22 06:06:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:06:57,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:57,914 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] [2020-12-22 06:06:57,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:06:57,915 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 06:06:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1034170530, now seen corresponding path program 1 times [2020-12-22 06:06:57,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:57,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119037191] [2020-12-22 06:06:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:58,002 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 06:06:58,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119037191] [2020-12-22 06:06:58,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:58,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:06:58,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019893452] [2020-12-22 06:06:58,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:58,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:58,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:58,011 INFO L87 Difference]: Start difference. First operand 5013 states and 9421 transitions. Second operand 3 states. [2020-12-22 06:06:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:58,490 INFO L93 Difference]: Finished difference Result 11609 states and 21871 transitions. [2020-12-22 06:06:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:58,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 06:06:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:58,521 INFO L225 Difference]: With dead ends: 11609 [2020-12-22 06:06:58,522 INFO L226 Difference]: Without dead ends: 9062 [2020-12-22 06:06:58,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2020-12-22 06:06:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 6963. [2020-12-22 06:06:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6963 states. [2020-12-22 06:06:58,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6963 states to 6963 states and 13093 transitions. [2020-12-22 06:06:58,862 INFO L78 Accepts]: Start accepts. Automaton has 6963 states and 13093 transitions. Word has length 41 [2020-12-22 06:06:58,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:58,862 INFO L481 AbstractCegarLoop]: Abstraction has 6963 states and 13093 transitions. [2020-12-22 06:06:58,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 6963 states and 13093 transitions. [2020-12-22 06:06:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:06:58,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:58,868 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 06:06:58,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:06:58,868 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 06:06:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1794145083, now seen corresponding path program 1 times [2020-12-22 06:06:58,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:58,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012106139] [2020-12-22 06:06:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:58,946 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 06:06:58,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012106139] [2020-12-22 06:06:58,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:58,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:58,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121619725] [2020-12-22 06:06:58,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:58,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:58,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:58,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:58,949 INFO L87 Difference]: Start difference. First operand 6963 states and 13093 transitions. Second operand 5 states. [2020-12-22 06:06:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:59,545 INFO L93 Difference]: Finished difference Result 13799 states and 25776 transitions. [2020-12-22 06:06:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:06:59,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:06:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:59,575 INFO L225 Difference]: With dead ends: 13799 [2020-12-22 06:06:59,575 INFO L226 Difference]: Without dead ends: 8084 [2020-12-22 06:06:59,585 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 06:06:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2020-12-22 06:06:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 5714. [2020-12-22 06:06:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:06:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10679 transitions. [2020-12-22 06:06:59,842 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10679 transitions. Word has length 60 [2020-12-22 06:06:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:59,842 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10679 transitions. [2020-12-22 06:06:59,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10679 transitions. [2020-12-22 06:06:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:06:59,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:59,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:59,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:06:59,845 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 06:06:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1044394081, now seen corresponding path program 1 times [2020-12-22 06:06:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956334856] [2020-12-22 06:06:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:59,961 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 06:06:59,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956334856] [2020-12-22 06:06:59,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:59,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:59,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975614684] [2020-12-22 06:06:59,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:59,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:59,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:59,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:59,964 INFO L87 Difference]: Start difference. First operand 5714 states and 10679 transitions. Second operand 4 states. [2020-12-22 06:07:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:01,667 INFO L93 Difference]: Finished difference Result 15739 states and 29524 transitions. [2020-12-22 06:07:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:01,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 06:07:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:01,693 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:07:01,693 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:07:01,701 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 06:07:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:07:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:07:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:07:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10662 transitions. [2020-12-22 06:07:01,988 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10662 transitions. Word has length 61 [2020-12-22 06:07:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:01,988 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10662 transitions. [2020-12-22 06:07:01,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10662 transitions. [2020-12-22 06:07:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:07:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:01,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:01,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:07:01,992 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 06:07:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash 344343269, now seen corresponding path program 1 times [2020-12-22 06:07:01,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:01,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821755530] [2020-12-22 06:07:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:02,080 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 06:07:02,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821755530] [2020-12-22 06:07:02,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:02,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:02,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079702012] [2020-12-22 06:07:02,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:02,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:02,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:02,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:02,082 INFO L87 Difference]: Start difference. First operand 5714 states and 10662 transitions. Second operand 4 states. [2020-12-22 06:07:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:03,577 INFO L93 Difference]: Finished difference Result 15739 states and 29491 transitions. [2020-12-22 06:07:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:03,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:07:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:03,603 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:07:03,603 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:07:03,615 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 06:07:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:07:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:07:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:07:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10645 transitions. [2020-12-22 06:07:03,917 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10645 transitions. Word has length 63 [2020-12-22 06:07:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:03,919 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10645 transitions. [2020-12-22 06:07:03,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10645 transitions. [2020-12-22 06:07:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:07:03,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:03,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:03,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:07:03,924 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 06:07:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 242529175, now seen corresponding path program 1 times [2020-12-22 06:07:03,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:03,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595762190] [2020-12-22 06:07:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:04,096 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 06:07:04,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595762190] [2020-12-22 06:07:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:04,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:04,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343479604] [2020-12-22 06:07:04,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:04,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:04,100 INFO L87 Difference]: Start difference. First operand 5714 states and 10645 transitions. Second operand 4 states. [2020-12-22 06:07:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:05,687 INFO L93 Difference]: Finished difference Result 15739 states and 29458 transitions. [2020-12-22 06:07:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:05,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:07:05,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:05,706 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:07:05,706 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:07:05,717 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 06:07:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:07:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:07:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:07:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10628 transitions. [2020-12-22 06:07:06,017 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10628 transitions. Word has length 65 [2020-12-22 06:07:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:06,017 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10628 transitions. [2020-12-22 06:07:06,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10628 transitions. [2020-12-22 06:07:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:07:06,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:06,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:06,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:07:06,021 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 06:07:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash -885621947, now seen corresponding path program 1 times [2020-12-22 06:07:06,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:06,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390517308] [2020-12-22 06:07:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:06,131 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 06:07:06,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390517308] [2020-12-22 06:07:06,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:06,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:06,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176074318] [2020-12-22 06:07:06,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:06,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:06,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:06,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:06,133 INFO L87 Difference]: Start difference. First operand 5714 states and 10628 transitions. Second operand 4 states. [2020-12-22 06:07:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:07,626 INFO L93 Difference]: Finished difference Result 15739 states and 29425 transitions. [2020-12-22 06:07:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:07,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:07:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:07,639 INFO L225 Difference]: With dead ends: 15739 [2020-12-22 06:07:07,640 INFO L226 Difference]: Without dead ends: 10062 [2020-12-22 06:07:07,649 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 06:07:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2020-12-22 06:07:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5714. [2020-12-22 06:07:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5714 states. [2020-12-22 06:07:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 10611 transitions. [2020-12-22 06:07:07,948 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 10611 transitions. Word has length 67 [2020-12-22 06:07:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:07,949 INFO L481 AbstractCegarLoop]: Abstraction has 5714 states and 10611 transitions. [2020-12-22 06:07:07,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 10611 transitions. [2020-12-22 06:07:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:07:07,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:07,953 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 06:07:07,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:07:07,954 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 06:07:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1949331083, now seen corresponding path program 1 times [2020-12-22 06:07:07,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:07,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557432688] [2020-12-22 06:07:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:08,057 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 06:07:08,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557432688] [2020-12-22 06:07:08,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:08,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:08,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942827994] [2020-12-22 06:07:08,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:07:08,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:07:08,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:08,060 INFO L87 Difference]: Start difference. First operand 5714 states and 10611 transitions. Second operand 6 states. [2020-12-22 06:07:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:12,999 INFO L93 Difference]: Finished difference Result 57280 states and 106847 transitions. [2020-12-22 06:07:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:07:13,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 06:07:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:13,073 INFO L225 Difference]: With dead ends: 57280 [2020-12-22 06:07:13,074 INFO L226 Difference]: Without dead ends: 51621 [2020-12-22 06:07:13,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:07:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51621 states. [2020-12-22 06:07:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51621 to 11287. [2020-12-22 06:07:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11287 states. [2020-12-22 06:07:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 20979 transitions. [2020-12-22 06:07:14,354 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 20979 transitions. Word has length 69 [2020-12-22 06:07:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:14,354 INFO L481 AbstractCegarLoop]: Abstraction has 11287 states and 20979 transitions. [2020-12-22 06:07:14,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:07:14,354 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 20979 transitions. [2020-12-22 06:07:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:07:14,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:14,363 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 06:07:14,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:07:14,363 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 06:07:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2108900907, now seen corresponding path program 1 times [2020-12-22 06:07:14,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:14,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312720266] [2020-12-22 06:07:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:14,497 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 06:07:14,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312720266] [2020-12-22 06:07:14,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:14,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:14,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103955800] [2020-12-22 06:07:14,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:14,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:14,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:14,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:14,502 INFO L87 Difference]: Start difference. First operand 11287 states and 20979 transitions. Second operand 5 states. [2020-12-22 06:07:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:18,097 INFO L93 Difference]: Finished difference Result 45362 states and 84133 transitions. [2020-12-22 06:07:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:07:18,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:07:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:18,137 INFO L225 Difference]: With dead ends: 45362 [2020-12-22 06:07:18,138 INFO L226 Difference]: Without dead ends: 34174 [2020-12-22 06:07:18,148 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 06:07:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34174 states. [2020-12-22 06:07:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34174 to 11329. [2020-12-22 06:07:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11329 states. [2020-12-22 06:07:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11329 states to 11329 states and 21021 transitions. [2020-12-22 06:07:18,829 INFO L78 Accepts]: Start accepts. Automaton has 11329 states and 21021 transitions. Word has length 71 [2020-12-22 06:07:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:18,830 INFO L481 AbstractCegarLoop]: Abstraction has 11329 states and 21021 transitions. [2020-12-22 06:07:18,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11329 states and 21021 transitions. [2020-12-22 06:07:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:07:18,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:18,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:18,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:07:18,835 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 06:07:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:18,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1011725762, now seen corresponding path program 1 times [2020-12-22 06:07:18,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:18,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097152581] [2020-12-22 06:07:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:18,895 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 06:07:18,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097152581] [2020-12-22 06:07:18,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:18,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:18,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330919538] [2020-12-22 06:07:18,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:18,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:18,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:18,897 INFO L87 Difference]: Start difference. First operand 11329 states and 21021 transitions. Second operand 4 states. [2020-12-22 06:07:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:22,055 INFO L93 Difference]: Finished difference Result 36988 states and 68623 transitions. [2020-12-22 06:07:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:22,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-22 06:07:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:22,093 INFO L225 Difference]: With dead ends: 36988 [2020-12-22 06:07:22,093 INFO L226 Difference]: Without dead ends: 25719 [2020-12-22 06:07:22,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25719 states. [2020-12-22 06:07:22,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25719 to 14527. [2020-12-22 06:07:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14527 states. [2020-12-22 06:07:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14527 states to 14527 states and 26613 transitions. [2020-12-22 06:07:22,812 INFO L78 Accepts]: Start accepts. Automaton has 14527 states and 26613 transitions. Word has length 72 [2020-12-22 06:07:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:22,812 INFO L481 AbstractCegarLoop]: Abstraction has 14527 states and 26613 transitions. [2020-12-22 06:07:22,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 14527 states and 26613 transitions. [2020-12-22 06:07:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:07:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:22,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:22,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:07:22,817 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 06:07:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash 227430245, now seen corresponding path program 1 times [2020-12-22 06:07:22,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:22,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523420828] [2020-12-22 06:07:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:22,877 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 06:07:22,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523420828] [2020-12-22 06:07:22,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:22,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:22,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033045304] [2020-12-22 06:07:22,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:22,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:22,880 INFO L87 Difference]: Start difference. First operand 14527 states and 26613 transitions. Second operand 5 states. [2020-12-22 06:07:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:23,437 INFO L93 Difference]: Finished difference Result 21694 states and 39766 transitions. [2020-12-22 06:07:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:23,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:07:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:23,456 INFO L225 Difference]: With dead ends: 21694 [2020-12-22 06:07:23,457 INFO L226 Difference]: Without dead ends: 7192 [2020-12-22 06:07:23,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:07:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2020-12-22 06:07:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7192. [2020-12-22 06:07:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7192 states. [2020-12-22 06:07:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 13179 transitions. [2020-12-22 06:07:23,948 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 13179 transitions. Word has length 72 [2020-12-22 06:07:23,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:23,948 INFO L481 AbstractCegarLoop]: Abstraction has 7192 states and 13179 transitions. [2020-12-22 06:07:23,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 13179 transitions. [2020-12-22 06:07:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:07:23,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:23,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:23,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:07:23,952 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 06:07:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1838865418, now seen corresponding path program 1 times [2020-12-22 06:07:23,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:23,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422831038] [2020-12-22 06:07:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:24,028 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 06:07:24,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422831038] [2020-12-22 06:07:24,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:24,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:24,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439907368] [2020-12-22 06:07:24,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:24,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:24,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:24,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:24,031 INFO L87 Difference]: Start difference. First operand 7192 states and 13179 transitions. Second operand 5 states. [2020-12-22 06:07:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:26,272 INFO L93 Difference]: Finished difference Result 47972 states and 88280 transitions. [2020-12-22 06:07:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:07:26,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 06:07:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:26,330 INFO L225 Difference]: With dead ends: 47972 [2020-12-22 06:07:26,330 INFO L226 Difference]: Without dead ends: 40827 [2020-12-22 06:07:26,353 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 06:07:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40827 states. [2020-12-22 06:07:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40827 to 11476. [2020-12-22 06:07:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11476 states. [2020-12-22 06:07:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11476 states to 11476 states and 21088 transitions. [2020-12-22 06:07:27,152 INFO L78 Accepts]: Start accepts. Automaton has 11476 states and 21088 transitions. Word has length 74 [2020-12-22 06:07:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:27,152 INFO L481 AbstractCegarLoop]: Abstraction has 11476 states and 21088 transitions. [2020-12-22 06:07:27,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 11476 states and 21088 transitions. [2020-12-22 06:07:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:07:27,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:27,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:27,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:07:27,155 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 06:07:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:27,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2113625032, now seen corresponding path program 1 times [2020-12-22 06:07:27,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:27,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213294580] [2020-12-22 06:07:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:27,219 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 06:07:27,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213294580] [2020-12-22 06:07:27,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:27,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:27,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268470935] [2020-12-22 06:07:27,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:27,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:27,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:27,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:27,222 INFO L87 Difference]: Start difference. First operand 11476 states and 21088 transitions. Second operand 5 states. [2020-12-22 06:07:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:29,115 INFO L93 Difference]: Finished difference Result 28728 states and 52844 transitions. [2020-12-22 06:07:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:29,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 06:07:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:29,141 INFO L225 Difference]: With dead ends: 28728 [2020-12-22 06:07:29,141 INFO L226 Difference]: Without dead ends: 17286 [2020-12-22 06:07:29,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17286 states. [2020-12-22 06:07:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17286 to 11476. [2020-12-22 06:07:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11476 states. [2020-12-22 06:07:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11476 states to 11476 states and 20847 transitions. [2020-12-22 06:07:29,750 INFO L78 Accepts]: Start accepts. Automaton has 11476 states and 20847 transitions. Word has length 74 [2020-12-22 06:07:29,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:29,750 INFO L481 AbstractCegarLoop]: Abstraction has 11476 states and 20847 transitions. [2020-12-22 06:07:29,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 11476 states and 20847 transitions. [2020-12-22 06:07:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:07:29,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:29,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:29,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:07:29,753 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 06:07:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1894770314, now seen corresponding path program 1 times [2020-12-22 06:07:29,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:29,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147062237] [2020-12-22 06:07:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:29,834 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 06:07:29,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147062237] [2020-12-22 06:07:29,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:29,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:29,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564577977] [2020-12-22 06:07:29,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:07:29,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:07:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:29,836 INFO L87 Difference]: Start difference. First operand 11476 states and 20847 transitions. Second operand 6 states. [2020-12-22 06:07:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:31,421 INFO L93 Difference]: Finished difference Result 24330 states and 44178 transitions. [2020-12-22 06:07:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:07:31,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-12-22 06:07:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:31,441 INFO L225 Difference]: With dead ends: 24330 [2020-12-22 06:07:31,441 INFO L226 Difference]: Without dead ends: 17311 [2020-12-22 06:07:31,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:07:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17311 states. [2020-12-22 06:07:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17311 to 11453. [2020-12-22 06:07:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11453 states. [2020-12-22 06:07:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 20801 transitions. [2020-12-22 06:07:31,955 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 20801 transitions. Word has length 74 [2020-12-22 06:07:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:31,955 INFO L481 AbstractCegarLoop]: Abstraction has 11453 states and 20801 transitions. [2020-12-22 06:07:31,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:07:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 20801 transitions. [2020-12-22 06:07:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:07:31,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:31,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:31,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:07:31,958 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 06:07:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:31,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1064271952, now seen corresponding path program 1 times [2020-12-22 06:07:31,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:31,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102876356] [2020-12-22 06:07:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:32,028 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 06:07:32,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102876356] [2020-12-22 06:07:32,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:32,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:32,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74886807] [2020-12-22 06:07:32,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:32,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:32,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:32,030 INFO L87 Difference]: Start difference. First operand 11453 states and 20801 transitions. Second operand 5 states. [2020-12-22 06:07:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:33,993 INFO L93 Difference]: Finished difference Result 44407 states and 80945 transitions. [2020-12-22 06:07:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:07:33,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-12-22 06:07:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:34,043 INFO L225 Difference]: With dead ends: 44407 [2020-12-22 06:07:34,043 INFO L226 Difference]: Without dead ends: 37406 [2020-12-22 06:07:34,056 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 06:07:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37406 states. [2020-12-22 06:07:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37406 to 17682. [2020-12-22 06:07:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17682 states. [2020-12-22 06:07:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17682 states to 17682 states and 32060 transitions. [2020-12-22 06:07:34,900 INFO L78 Accepts]: Start accepts. Automaton has 17682 states and 32060 transitions. Word has length 76 [2020-12-22 06:07:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:34,900 INFO L481 AbstractCegarLoop]: Abstraction has 17682 states and 32060 transitions. [2020-12-22 06:07:34,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 17682 states and 32060 transitions. [2020-12-22 06:07:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:07:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:34,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:34,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:07:34,903 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 06:07:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 203497508, now seen corresponding path program 1 times [2020-12-22 06:07:34,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:34,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996237789] [2020-12-22 06:07:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:35,009 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 06:07:35,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996237789] [2020-12-22 06:07:35,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:35,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:35,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314647165] [2020-12-22 06:07:35,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:35,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:35,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:35,015 INFO L87 Difference]: Start difference. First operand 17682 states and 32060 transitions. Second operand 5 states. [2020-12-22 06:07:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:36,564 INFO L93 Difference]: Finished difference Result 41156 states and 74528 transitions. [2020-12-22 06:07:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:07:36,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 06:07:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:36,603 INFO L225 Difference]: With dead ends: 41156 [2020-12-22 06:07:36,603 INFO L226 Difference]: Without dead ends: 28210 [2020-12-22 06:07:36,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:07:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28210 states. [2020-12-22 06:07:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28210 to 17718. [2020-12-22 06:07:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17718 states. [2020-12-22 06:07:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17718 states to 17718 states and 32084 transitions. [2020-12-22 06:07:37,649 INFO L78 Accepts]: Start accepts. Automaton has 17718 states and 32084 transitions. Word has length 78 [2020-12-22 06:07:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:37,650 INFO L481 AbstractCegarLoop]: Abstraction has 17718 states and 32084 transitions. [2020-12-22 06:07:37,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17718 states and 32084 transitions. [2020-12-22 06:07:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:07:37,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:37,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:37,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:07:37,660 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 06:07:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1374758736, now seen corresponding path program 1 times [2020-12-22 06:07:37,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:37,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873789485] [2020-12-22 06:07:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:37,733 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 06:07:37,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873789485] [2020-12-22 06:07:37,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:37,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:37,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717690314] [2020-12-22 06:07:37,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:37,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:37,739 INFO L87 Difference]: Start difference. First operand 17718 states and 32084 transitions. Second operand 5 states. [2020-12-22 06:07:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:39,732 INFO L93 Difference]: Finished difference Result 43748 states and 79709 transitions. [2020-12-22 06:07:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:39,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 06:07:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:39,773 INFO L225 Difference]: With dead ends: 43748 [2020-12-22 06:07:39,773 INFO L226 Difference]: Without dead ends: 27938 [2020-12-22 06:07:39,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:07:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27938 states. [2020-12-22 06:07:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27938 to 17718. [2020-12-22 06:07:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17718 states. [2020-12-22 06:07:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17718 states to 17718 states and 31886 transitions. [2020-12-22 06:07:40,789 INFO L78 Accepts]: Start accepts. Automaton has 17718 states and 31886 transitions. Word has length 85 [2020-12-22 06:07:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:40,789 INFO L481 AbstractCegarLoop]: Abstraction has 17718 states and 31886 transitions. [2020-12-22 06:07:40,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 17718 states and 31886 transitions. [2020-12-22 06:07:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:07:40,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:40,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:40,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:07:40,793 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 06:07:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1034283597, now seen corresponding path program 1 times [2020-12-22 06:07:40,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:40,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698071628] [2020-12-22 06:07:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:40,882 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 06:07:40,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698071628] [2020-12-22 06:07:40,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:40,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:07:40,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671387142] [2020-12-22 06:07:40,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:07:40,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:07:40,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:40,884 INFO L87 Difference]: Start difference. First operand 17718 states and 31886 transitions. Second operand 6 states. [2020-12-22 06:07:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:41,884 INFO L93 Difference]: Finished difference Result 31155 states and 55818 transitions. [2020-12-22 06:07:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:07:41,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 06:07:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:41,908 INFO L225 Difference]: With dead ends: 31155 [2020-12-22 06:07:41,908 INFO L226 Difference]: Without dead ends: 17733 [2020-12-22 06:07:41,920 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 06:07:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17733 states. [2020-12-22 06:07:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17733 to 17718. [2020-12-22 06:07:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17718 states. [2020-12-22 06:07:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17718 states to 17718 states and 31620 transitions. [2020-12-22 06:07:42,878 INFO L78 Accepts]: Start accepts. Automaton has 17718 states and 31620 transitions. Word has length 85 [2020-12-22 06:07:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:42,879 INFO L481 AbstractCegarLoop]: Abstraction has 17718 states and 31620 transitions. [2020-12-22 06:07:42,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:07:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17718 states and 31620 transitions. [2020-12-22 06:07:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:07:42,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:42,881 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] [2020-12-22 06:07:42,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:07:42,881 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 06:07:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash -937572823, now seen corresponding path program 1 times [2020-12-22 06:07:42,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:42,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795357644] [2020-12-22 06:07:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:07:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795357644] [2020-12-22 06:07:42,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:42,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:42,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118013606] [2020-12-22 06:07:42,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:42,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:42,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:42,959 INFO L87 Difference]: Start difference. First operand 17718 states and 31620 transitions. Second operand 5 states. [2020-12-22 06:07:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:44,299 INFO L93 Difference]: Finished difference Result 30699 states and 54634 transitions. [2020-12-22 06:07:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:44,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:07:44,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:44,320 INFO L225 Difference]: With dead ends: 30699 [2020-12-22 06:07:44,320 INFO L226 Difference]: Without dead ends: 17757 [2020-12-22 06:07:44,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:07:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17757 states. [2020-12-22 06:07:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17757 to 17718. [2020-12-22 06:07:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17718 states. [2020-12-22 06:07:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17718 states to 17718 states and 31581 transitions. [2020-12-22 06:07:45,286 INFO L78 Accepts]: Start accepts. Automaton has 17718 states and 31581 transitions. Word has length 86 [2020-12-22 06:07:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:45,286 INFO L481 AbstractCegarLoop]: Abstraction has 17718 states and 31581 transitions. [2020-12-22 06:07:45,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17718 states and 31581 transitions. [2020-12-22 06:07:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:07:45,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:45,288 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] [2020-12-22 06:07:45,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:07:45,289 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 06:07:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1524378837, now seen corresponding path program 1 times [2020-12-22 06:07:45,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:45,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260927639] [2020-12-22 06:07:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:45,371 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 06:07:45,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260927639] [2020-12-22 06:07:45,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:45,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:45,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222961540] [2020-12-22 06:07:45,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:45,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:45,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:45,373 INFO L87 Difference]: Start difference. First operand 17718 states and 31581 transitions. Second operand 3 states. [2020-12-22 06:07:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:46,951 INFO L93 Difference]: Finished difference Result 46939 states and 83879 transitions. [2020-12-22 06:07:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:46,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:07:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:46,990 INFO L225 Difference]: With dead ends: 46939 [2020-12-22 06:07:46,990 INFO L226 Difference]: Without dead ends: 31212 [2020-12-22 06:07:47,001 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 06:07:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31212 states. [2020-12-22 06:07:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31212 to 31212. [2020-12-22 06:07:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31212 states. [2020-12-22 06:07:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31212 states to 31212 states and 55949 transitions. [2020-12-22 06:07:48,430 INFO L78 Accepts]: Start accepts. Automaton has 31212 states and 55949 transitions. Word has length 86 [2020-12-22 06:07:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:48,430 INFO L481 AbstractCegarLoop]: Abstraction has 31212 states and 55949 transitions. [2020-12-22 06:07:48,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 31212 states and 55949 transitions. [2020-12-22 06:07:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:07:48,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:48,434 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] [2020-12-22 06:07:48,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:07:48,434 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 06:07:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash 581603941, now seen corresponding path program 1 times [2020-12-22 06:07:48,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:48,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116179295] [2020-12-22 06:07:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:48,505 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 06:07:48,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116179295] [2020-12-22 06:07:48,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:48,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:48,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089810149] [2020-12-22 06:07:48,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:48,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:48,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:48,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:48,507 INFO L87 Difference]: Start difference. First operand 31212 states and 55949 transitions. Second operand 3 states. [2020-12-22 06:07:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:51,242 INFO L93 Difference]: Finished difference Result 85980 states and 154239 transitions. [2020-12-22 06:07:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:51,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:07:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:51,325 INFO L225 Difference]: With dead ends: 85980 [2020-12-22 06:07:51,326 INFO L226 Difference]: Without dead ends: 57974 [2020-12-22 06:07:51,342 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 06:07:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57974 states. [2020-12-22 06:07:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57974 to 57972. [2020-12-22 06:07:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57972 states. [2020-12-22 06:07:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57972 states to 57972 states and 104247 transitions. [2020-12-22 06:07:54,560 INFO L78 Accepts]: Start accepts. Automaton has 57972 states and 104247 transitions. Word has length 88 [2020-12-22 06:07:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:54,560 INFO L481 AbstractCegarLoop]: Abstraction has 57972 states and 104247 transitions. [2020-12-22 06:07:54,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 57972 states and 104247 transitions. [2020-12-22 06:07:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:07:54,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:54,565 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] [2020-12-22 06:07:54,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:07:54,566 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:07:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:54,566 INFO L82 PathProgramCache]: Analyzing trace with hash -334719490, now seen corresponding path program 1 times [2020-12-22 06:07:54,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:54,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118984583] [2020-12-22 06:07:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:54,801 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 06:07:54,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118984583] [2020-12-22 06:07:54,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:54,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:54,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862703649] [2020-12-22 06:07:54,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:54,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:54,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:54,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:54,803 INFO L87 Difference]: Start difference. First operand 57972 states and 104247 transitions. Second operand 3 states. [2020-12-22 06:08:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:00,240 INFO L93 Difference]: Finished difference Result 163569 states and 294013 transitions. [2020-12-22 06:08:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:00,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:08:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:00,444 INFO L225 Difference]: With dead ends: 163569 [2020-12-22 06:08:00,444 INFO L226 Difference]: Without dead ends: 111018 [2020-12-22 06:08:00,630 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 06:08:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111018 states. [2020-12-22 06:08:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111018 to 111014. [2020-12-22 06:08:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111014 states. [2020-12-22 06:08:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111014 states to 111014 states and 199923 transitions. [2020-12-22 06:08:07,020 INFO L78 Accepts]: Start accepts. Automaton has 111014 states and 199923 transitions. Word has length 89 [2020-12-22 06:08:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:07,020 INFO L481 AbstractCegarLoop]: Abstraction has 111014 states and 199923 transitions. [2020-12-22 06:08:07,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 111014 states and 199923 transitions. [2020-12-22 06:08:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:08:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:07,025 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] [2020-12-22 06:08:07,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:08:07,026 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1786339508, now seen corresponding path program 1 times [2020-12-22 06:08:07,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:07,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907654995] [2020-12-22 06:08:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:07,111 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 06:08:07,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907654995] [2020-12-22 06:08:07,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:07,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:07,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998543682] [2020-12-22 06:08:07,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:07,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:07,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:07,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:07,113 INFO L87 Difference]: Start difference. First operand 111014 states and 199923 transitions. Second operand 3 states. [2020-12-22 06:08:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:18,152 INFO L93 Difference]: Finished difference Result 317718 states and 571583 transitions. [2020-12-22 06:08:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:18,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 06:08:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:18,623 INFO L225 Difference]: With dead ends: 317718 [2020-12-22 06:08:18,623 INFO L226 Difference]: Without dead ends: 216126 [2020-12-22 06:08:18,712 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 06:08:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216126 states. [2020-12-22 06:08:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216126 to 216120. [2020-12-22 06:08:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216120 states. [2020-12-22 06:08:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216120 states to 216120 states and 389391 transitions. [2020-12-22 06:08:30,971 INFO L78 Accepts]: Start accepts. Automaton has 216120 states and 389391 transitions. Word has length 90 [2020-12-22 06:08:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:30,972 INFO L481 AbstractCegarLoop]: Abstraction has 216120 states and 389391 transitions. [2020-12-22 06:08:30,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:08:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 216120 states and 389391 transitions. [2020-12-22 06:08:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:08:30,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:30,980 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] [2020-12-22 06:08:30,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:08:30,980 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:08:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash 458080199, now seen corresponding path program 1 times [2020-12-22 06:08:30,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:30,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077663070] [2020-12-22 06:08:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:31,073 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 06:08:31,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077663070] [2020-12-22 06:08:31,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:31,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:31,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113121350] [2020-12-22 06:08:31,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:08:31,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:31,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:08:31,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:08:31,076 INFO L87 Difference]: Start difference. First operand 216120 states and 389391 transitions. Second operand 3 states. [2020-12-22 06:08:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:52,071 INFO L93 Difference]: Finished difference Result 623915 states and 1122680 transitions. [2020-12-22 06:08:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:08:52,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:08:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:53,315 INFO L225 Difference]: With dead ends: 623915 [2020-12-22 06:08:53,315 INFO L226 Difference]: Without dead ends: 424357 [2020-12-22 06:08:53,500 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 06:08:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424357 states. [2020-12-22 06:09:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424357 to 424349. [2020-12-22 06:09:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424349 states. [2020-12-22 06:09:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424349 states to 424349 states and 764461 transitions. [2020-12-22 06:09:17,825 INFO L78 Accepts]: Start accepts. Automaton has 424349 states and 764461 transitions. Word has length 91 [2020-12-22 06:09:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:17,826 INFO L481 AbstractCegarLoop]: Abstraction has 424349 states and 764461 transitions. [2020-12-22 06:09:17,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 424349 states and 764461 transitions. [2020-12-22 06:09:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:09:17,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:17,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:17,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:09:17,853 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:09:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2134592196, now seen corresponding path program 1 times [2020-12-22 06:09:17,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:17,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895716204] [2020-12-22 06:09:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:09:17,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895716204] [2020-12-22 06:09:17,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:17,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:17,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795957884] [2020-12-22 06:09:17,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:09:17,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:17,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:09:17,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:09:17,935 INFO L87 Difference]: Start difference. First operand 424349 states and 764461 transitions. Second operand 5 states. [2020-12-22 06:09:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:50,201 INFO L93 Difference]: Finished difference Result 941105 states and 1669316 transitions. [2020-12-22 06:09:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:09:50,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-22 06:09:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:51,483 INFO L225 Difference]: With dead ends: 941105 [2020-12-22 06:09:51,483 INFO L226 Difference]: Without dead ends: 516988 [2020-12-22 06:09:52,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:09:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516988 states.