/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:58:40,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:58:40,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:58:40,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:58:40,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:58:40,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:58:40,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:58:40,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:58:40,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:58:40,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:58:40,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:58:40,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:58:40,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:58:40,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:58:40,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:58:40,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:58:40,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:58:40,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:58:40,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:58:40,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:58:40,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:58:40,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:58:40,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:58:40,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:58:40,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 05:58:40,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 05:58:40,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 05:58:40,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 05:58:40,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 05:58:40,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 05:58:40,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:58:40,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:58:40,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:58:40,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:58:40,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:58:40,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:58:40,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:58:40,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:58:40,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:58:40,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:58:40,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:58:40,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:58:40,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:58:40,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:58:40,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:58:40,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:58:40,781 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:58:40,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:58:40,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:58:40,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:58:40,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:58:40,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:58:40,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:58:40,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:58:40,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:58:40,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:58:40,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:58:40,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:58:40,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:58:40,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:40,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:58:40,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:58:40,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:58:40,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:58:40,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:58:40,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:58:40,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:58:40,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:58:41,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:58:41,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:58:41,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:58:41,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:58:41,250 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:58:41,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2020-12-22 05:58:41,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3cf00b/8379c3e7a25c4f3eb9ba6b6277a57ec6/FLAG1ecbdd4a1 [2020-12-22 05:58:42,111 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:58:42,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2020-12-22 05:58:42,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3cf00b/8379c3e7a25c4f3eb9ba6b6277a57ec6/FLAG1ecbdd4a1 [2020-12-22 05:58:42,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3cf00b/8379c3e7a25c4f3eb9ba6b6277a57ec6 [2020-12-22 05:58:42,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:58:42,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:58:42,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:42,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:58:42,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:58:42,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:42" (1/1) ... [2020-12-22 05:58:42,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2febee80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:42, skipping insertion in model container [2020-12-22 05:58:42,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:42" (1/1) ... [2020-12-22 05:58:42,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:58:42,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:58:42,921 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40502,40515] [2020-12-22 05:58:43,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:43,158 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:58:43,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40502,40515] [2020-12-22 05:58:43,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:43,362 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:58:43,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43 WrapperNode [2020-12-22 05:58:43,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:43,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:43,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:58:43,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:58:43,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:43,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:58:43,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:58:43,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:58:43,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... [2020-12-22 05:58:43,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:58:43,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:58:43,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:58:43,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:58:43,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:58:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:58:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:58:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:58:49,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:58:49,907 INFO L299 CfgBuilder]: Removed 553 assume(true) statements. [2020-12-22 05:58:49,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:49 BoogieIcfgContainer [2020-12-22 05:58:49,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:58:49,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:58:49,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:58:49,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:58:49,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:58:42" (1/3) ... [2020-12-22 05:58:49,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d60b541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:49, skipping insertion in model container [2020-12-22 05:58:49,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:43" (2/3) ... [2020-12-22 05:58:49,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d60b541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:49, skipping insertion in model container [2020-12-22 05:58:49,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:49" (3/3) ... [2020-12-22 05:58:49,922 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2020-12-22 05:58:49,928 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:58:49,935 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:58:49,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:58:50,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:58:50,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:58:50,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:58:50,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:58:50,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:58:50,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:58:50,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:58:50,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:58:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states. [2020-12-22 05:58:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:58:50,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:50,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:50,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash -522063209, now seen corresponding path program 1 times [2020-12-22 05:58:50,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:50,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019656738] [2020-12-22 05:58:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:50,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019656738] [2020-12-22 05:58:50,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:50,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:50,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205123749] [2020-12-22 05:58:50,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:50,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:50,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:50,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:50,570 INFO L87 Difference]: Start difference. First operand 2411 states. Second operand 3 states. [2020-12-22 05:58:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,862 INFO L93 Difference]: Finished difference Result 7153 states and 13505 transitions. [2020-12-22 05:58:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:50,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 05:58:50,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,935 INFO L225 Difference]: With dead ends: 7153 [2020-12-22 05:58:50,935 INFO L226 Difference]: Without dead ends: 4747 [2020-12-22 05:58:50,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2020-12-22 05:58:51,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 2407. [2020-12-22 05:58:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2407 states. [2020-12-22 05:58:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4532 transitions. [2020-12-22 05:58:51,133 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4532 transitions. Word has length 53 [2020-12-22 05:58:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,133 INFO L481 AbstractCegarLoop]: Abstraction has 2407 states and 4532 transitions. [2020-12-22 05:58:51,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4532 transitions. [2020-12-22 05:58:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:58:51,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:51,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:58:51,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash 595699420, now seen corresponding path program 1 times [2020-12-22 05:58:51,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770950021] [2020-12-22 05:58:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:51,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770950021] [2020-12-22 05:58:51,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:51,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698491588] [2020-12-22 05:58:51,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:51,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:51,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,284 INFO L87 Difference]: Start difference. First operand 2407 states and 4532 transitions. Second operand 4 states. [2020-12-22 05:58:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:51,736 INFO L93 Difference]: Finished difference Result 9382 states and 17683 transitions. [2020-12-22 05:58:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:51,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:58:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:51,785 INFO L225 Difference]: With dead ends: 9382 [2020-12-22 05:58:51,786 INFO L226 Difference]: Without dead ends: 6997 [2020-12-22 05:58:51,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2020-12-22 05:58:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 2383. [2020-12-22 05:58:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4479 transitions. [2020-12-22 05:58:51,915 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4479 transitions. Word has length 60 [2020-12-22 05:58:51,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,915 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4479 transitions. [2020-12-22 05:58:51,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4479 transitions. [2020-12-22 05:58:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:58:51,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:51,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:58:51,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1921986694, now seen corresponding path program 1 times [2020-12-22 05:58:51,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278614757] [2020-12-22 05:58:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:52,057 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 05:58:52,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278614757] [2020-12-22 05:58:52,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:52,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:52,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717547369] [2020-12-22 05:58:52,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:52,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:52,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:52,060 INFO L87 Difference]: Start difference. First operand 2383 states and 4479 transitions. Second operand 4 states. [2020-12-22 05:58:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,438 INFO L93 Difference]: Finished difference Result 7057 states and 13288 transitions. [2020-12-22 05:58:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:52,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 05:58:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:52,466 INFO L225 Difference]: With dead ends: 7057 [2020-12-22 05:58:52,466 INFO L226 Difference]: Without dead ends: 4696 [2020-12-22 05:58:52,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-12-22 05:58:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 2383. [2020-12-22 05:58:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4473 transitions. [2020-12-22 05:58:52,647 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4473 transitions. Word has length 61 [2020-12-22 05:58:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:52,655 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4473 transitions. [2020-12-22 05:58:52,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4473 transitions. [2020-12-22 05:58:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 05:58:52,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:52,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:52,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:58:52,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:52,660 INFO L82 PathProgramCache]: Analyzing trace with hash -404681655, now seen corresponding path program 1 times [2020-12-22 05:58:52,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:52,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138434909] [2020-12-22 05:58:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:52,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138434909] [2020-12-22 05:58:52,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:52,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:52,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582878875] [2020-12-22 05:58:52,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:52,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:52,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:52,811 INFO L87 Difference]: Start difference. First operand 2383 states and 4473 transitions. Second operand 4 states. [2020-12-22 05:58:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:53,177 INFO L93 Difference]: Finished difference Result 7057 states and 13276 transitions. [2020-12-22 05:58:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:53,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 05:58:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:53,231 INFO L225 Difference]: With dead ends: 7057 [2020-12-22 05:58:53,231 INFO L226 Difference]: Without dead ends: 4696 [2020-12-22 05:58:53,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-12-22 05:58:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 2383. [2020-12-22 05:58:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4467 transitions. [2020-12-22 05:58:53,368 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4467 transitions. Word has length 63 [2020-12-22 05:58:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:53,370 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4467 transitions. [2020-12-22 05:58:53,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4467 transitions. [2020-12-22 05:58:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:58:53,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:53,375 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 05:58:53,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:58:53,375 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:53,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:53,376 INFO L82 PathProgramCache]: Analyzing trace with hash 187256676, now seen corresponding path program 1 times [2020-12-22 05:58:53,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:53,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768461935] [2020-12-22 05:58:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:53,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768461935] [2020-12-22 05:58:53,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:53,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149657585] [2020-12-22 05:58:53,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:53,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:53,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:53,483 INFO L87 Difference]: Start difference. First operand 2383 states and 4467 transitions. Second operand 4 states. [2020-12-22 05:58:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:53,994 INFO L93 Difference]: Finished difference Result 11665 states and 21950 transitions. [2020-12-22 05:58:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:53,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:58:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:54,097 INFO L225 Difference]: With dead ends: 11665 [2020-12-22 05:58:54,097 INFO L226 Difference]: Without dead ends: 9304 [2020-12-22 05:58:54,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:54,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2020-12-22 05:58:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 2383. [2020-12-22 05:58:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4466 transitions. [2020-12-22 05:58:54,248 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4466 transitions. Word has length 65 [2020-12-22 05:58:54,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:54,248 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4466 transitions. [2020-12-22 05:58:54,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4466 transitions. [2020-12-22 05:58:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:58:54,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:54,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:54,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:58:54,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1067372681, now seen corresponding path program 1 times [2020-12-22 05:58:54,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:54,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675540043] [2020-12-22 05:58:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675540043] [2020-12-22 05:58:54,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:54,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:54,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806998988] [2020-12-22 05:58:54,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:54,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:54,372 INFO L87 Difference]: Start difference. First operand 2383 states and 4466 transitions. Second operand 4 states. [2020-12-22 05:58:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:54,726 INFO L93 Difference]: Finished difference Result 7057 states and 13263 transitions. [2020-12-22 05:58:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:54,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:58:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:54,739 INFO L225 Difference]: With dead ends: 7057 [2020-12-22 05:58:54,739 INFO L226 Difference]: Without dead ends: 4696 [2020-12-22 05:58:54,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-12-22 05:58:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 2383. [2020-12-22 05:58:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4460 transitions. [2020-12-22 05:58:54,867 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4460 transitions. Word has length 66 [2020-12-22 05:58:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:54,867 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4460 transitions. [2020-12-22 05:58:54,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4460 transitions. [2020-12-22 05:58:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:58:54,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:54,870 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 05:58:54,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:58:54,870 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:54,871 INFO L82 PathProgramCache]: Analyzing trace with hash -449039543, now seen corresponding path program 1 times [2020-12-22 05:58:54,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:54,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716920624] [2020-12-22 05:58:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716920624] [2020-12-22 05:58:54,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:54,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77331777] [2020-12-22 05:58:54,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:54,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:54,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:54,986 INFO L87 Difference]: Start difference. First operand 2383 states and 4460 transitions. Second operand 4 states. [2020-12-22 05:58:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:55,341 INFO L93 Difference]: Finished difference Result 7057 states and 13251 transitions. [2020-12-22 05:58:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:55,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 05:58:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:55,354 INFO L225 Difference]: With dead ends: 7057 [2020-12-22 05:58:55,354 INFO L226 Difference]: Without dead ends: 4696 [2020-12-22 05:58:55,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:55,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-12-22 05:58:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 2383. [2020-12-22 05:58:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-12-22 05:58:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 4454 transitions. [2020-12-22 05:58:55,468 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 4454 transitions. Word has length 67 [2020-12-22 05:58:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:55,469 INFO L481 AbstractCegarLoop]: Abstraction has 2383 states and 4454 transitions. [2020-12-22 05:58:55,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 4454 transitions. [2020-12-22 05:58:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:58:55,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:55,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:55,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:58:55,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:55,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584462, now seen corresponding path program 1 times [2020-12-22 05:58:55,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:55,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048326631] [2020-12-22 05:58:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:55,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048326631] [2020-12-22 05:58:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:55,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:55,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205058222] [2020-12-22 05:58:55,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:55,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:55,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:55,571 INFO L87 Difference]: Start difference. First operand 2383 states and 4454 transitions. Second operand 4 states. [2020-12-22 05:58:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:55,940 INFO L93 Difference]: Finished difference Result 9340 states and 17549 transitions. [2020-12-22 05:58:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:55,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:58:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:55,962 INFO L225 Difference]: With dead ends: 9340 [2020-12-22 05:58:55,962 INFO L226 Difference]: Without dead ends: 6985 [2020-12-22 05:58:55,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2020-12-22 05:58:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 2385. [2020-12-22 05:58:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2385 states. [2020-12-22 05:58:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 4455 transitions. [2020-12-22 05:58:56,109 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 4455 transitions. Word has length 68 [2020-12-22 05:58:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:56,110 INFO L481 AbstractCegarLoop]: Abstraction has 2385 states and 4455 transitions. [2020-12-22 05:58:56,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 4455 transitions. [2020-12-22 05:58:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:56,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:56,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:56,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:58:56,119 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:56,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:56,120 INFO L82 PathProgramCache]: Analyzing trace with hash 171327486, now seen corresponding path program 1 times [2020-12-22 05:58:56,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:56,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69267628] [2020-12-22 05:58:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:56,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69267628] [2020-12-22 05:58:56,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:56,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:56,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338826452] [2020-12-22 05:58:56,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:56,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:56,220 INFO L87 Difference]: Start difference. First operand 2385 states and 4455 transitions. Second operand 4 states. [2020-12-22 05:58:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:56,617 INFO L93 Difference]: Finished difference Result 9332 states and 17529 transitions. [2020-12-22 05:58:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:56,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 05:58:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:56,636 INFO L225 Difference]: With dead ends: 9332 [2020-12-22 05:58:56,637 INFO L226 Difference]: Without dead ends: 6980 [2020-12-22 05:58:56,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6980 states. [2020-12-22 05:58:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6980 to 2390. [2020-12-22 05:58:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-12-22 05:58:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 4463 transitions. [2020-12-22 05:58:56,777 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 4463 transitions. Word has length 69 [2020-12-22 05:58:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:56,777 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 4463 transitions. [2020-12-22 05:58:56,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 4463 transitions. [2020-12-22 05:58:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:58:56,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:56,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:56,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:58:56,781 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:56,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1971708541, now seen corresponding path program 1 times [2020-12-22 05:58:56,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:56,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993315585] [2020-12-22 05:58:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:56,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993315585] [2020-12-22 05:58:56,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:56,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:56,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220992005] [2020-12-22 05:58:56,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:56,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:56,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:56,855 INFO L87 Difference]: Start difference. First operand 2390 states and 4463 transitions. Second operand 3 states. [2020-12-22 05:58:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:56,973 INFO L93 Difference]: Finished difference Result 4737 states and 8868 transitions. [2020-12-22 05:58:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:56,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 05:58:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:56,982 INFO L225 Difference]: With dead ends: 4737 [2020-12-22 05:58:56,982 INFO L226 Difference]: Without dead ends: 2384 [2020-12-22 05:58:56,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2020-12-22 05:58:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2384. [2020-12-22 05:58:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2020-12-22 05:58:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 4451 transitions. [2020-12-22 05:58:57,097 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 4451 transitions. Word has length 70 [2020-12-22 05:58:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:57,098 INFO L481 AbstractCegarLoop]: Abstraction has 2384 states and 4451 transitions. [2020-12-22 05:58:57,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 4451 transitions. [2020-12-22 05:58:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:58:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:57,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:57,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:58:57,101 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash 8788862, now seen corresponding path program 1 times [2020-12-22 05:58:57,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:57,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862159315] [2020-12-22 05:58:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:57,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862159315] [2020-12-22 05:58:57,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:57,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:57,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472277421] [2020-12-22 05:58:57,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:57,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:57,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:57,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:57,237 INFO L87 Difference]: Start difference. First operand 2384 states and 4451 transitions. Second operand 5 states. [2020-12-22 05:58:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:57,445 INFO L93 Difference]: Finished difference Result 4681 states and 8781 transitions. [2020-12-22 05:58:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:57,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:58:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:57,453 INFO L225 Difference]: With dead ends: 4681 [2020-12-22 05:58:57,453 INFO L226 Difference]: Without dead ends: 2371 [2020-12-22 05:58:57,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:58:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-12-22 05:58:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2371. [2020-12-22 05:58:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2371 states. [2020-12-22 05:58:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 4429 transitions. [2020-12-22 05:58:57,584 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 4429 transitions. Word has length 72 [2020-12-22 05:58:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:57,584 INFO L481 AbstractCegarLoop]: Abstraction has 2371 states and 4429 transitions. [2020-12-22 05:58:57,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 4429 transitions. [2020-12-22 05:58:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:57,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:57,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:57,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:58:57,591 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash -748675990, now seen corresponding path program 1 times [2020-12-22 05:58:57,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:57,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831053810] [2020-12-22 05:58:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:57,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831053810] [2020-12-22 05:58:57,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:57,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:57,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721408903] [2020-12-22 05:58:57,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:57,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:57,689 INFO L87 Difference]: Start difference. First operand 2371 states and 4429 transitions. Second operand 5 states. [2020-12-22 05:58:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:57,890 INFO L93 Difference]: Finished difference Result 4675 states and 8770 transitions. [2020-12-22 05:58:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:57,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:58:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:57,898 INFO L225 Difference]: With dead ends: 4675 [2020-12-22 05:58:57,898 INFO L226 Difference]: Without dead ends: 2365 [2020-12-22 05:58:57,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-12-22 05:58:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2020-12-22 05:58:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-12-22 05:58:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 4420 transitions. [2020-12-22 05:58:58,033 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 4420 transitions. Word has length 75 [2020-12-22 05:58:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:58,035 INFO L481 AbstractCegarLoop]: Abstraction has 2365 states and 4420 transitions. [2020-12-22 05:58:58,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 4420 transitions. [2020-12-22 05:58:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:58,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:58,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:58:58,038 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1005668118, now seen corresponding path program 1 times [2020-12-22 05:58:58,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:58,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542114352] [2020-12-22 05:58:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:58,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542114352] [2020-12-22 05:58:58,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:58,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:58,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199911625] [2020-12-22 05:58:58,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:58,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:58,121 INFO L87 Difference]: Start difference. First operand 2365 states and 4420 transitions. Second operand 4 states. [2020-12-22 05:58:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,263 INFO L93 Difference]: Finished difference Result 4669 states and 8761 transitions. [2020-12-22 05:58:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:58,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:58:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,270 INFO L225 Difference]: With dead ends: 4669 [2020-12-22 05:58:58,270 INFO L226 Difference]: Without dead ends: 2351 [2020-12-22 05:58:58,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2020-12-22 05:58:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2351. [2020-12-22 05:58:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-12-22 05:58:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4399 transitions. [2020-12-22 05:58:58,383 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4399 transitions. Word has length 75 [2020-12-22 05:58:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:58,383 INFO L481 AbstractCegarLoop]: Abstraction has 2351 states and 4399 transitions. [2020-12-22 05:58:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4399 transitions. [2020-12-22 05:58:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 05:58:58,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:58,386 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 05:58:58,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:58:58,386 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:58,387 INFO L82 PathProgramCache]: Analyzing trace with hash 853573783, now seen corresponding path program 1 times [2020-12-22 05:58:58,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:58,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9734862] [2020-12-22 05:58:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:58,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9734862] [2020-12-22 05:58:58,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:58,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407847334] [2020-12-22 05:58:58,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:58,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:58,472 INFO L87 Difference]: Start difference. First operand 2351 states and 4399 transitions. Second operand 6 states. [2020-12-22 05:58:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,770 INFO L93 Difference]: Finished difference Result 4669 states and 8756 transitions. [2020-12-22 05:58:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:58,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 05:58:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,776 INFO L225 Difference]: With dead ends: 4669 [2020-12-22 05:58:58,776 INFO L226 Difference]: Without dead ends: 2371 [2020-12-22 05:58:58,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-12-22 05:58:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2351. [2020-12-22 05:58:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-12-22 05:58:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4398 transitions. [2020-12-22 05:58:58,886 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4398 transitions. Word has length 76 [2020-12-22 05:58:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:58,887 INFO L481 AbstractCegarLoop]: Abstraction has 2351 states and 4398 transitions. [2020-12-22 05:58:58,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4398 transitions. [2020-12-22 05:58:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:58:58,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:58,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:58,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:58:58,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:58,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1794490083, now seen corresponding path program 1 times [2020-12-22 05:58:58,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:58,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522679015] [2020-12-22 05:58:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:58,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522679015] [2020-12-22 05:58:58,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:58,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:58,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715435746] [2020-12-22 05:58:58,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:58,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:58,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:58,986 INFO L87 Difference]: Start difference. First operand 2351 states and 4398 transitions. Second operand 6 states. [2020-12-22 05:58:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:59,266 INFO L93 Difference]: Finished difference Result 4659 states and 8737 transitions. [2020-12-22 05:58:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:59,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 05:58:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:59,274 INFO L225 Difference]: With dead ends: 4659 [2020-12-22 05:58:59,274 INFO L226 Difference]: Without dead ends: 2366 [2020-12-22 05:58:59,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2020-12-22 05:58:59,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2351. [2020-12-22 05:58:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-12-22 05:58:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4397 transitions. [2020-12-22 05:58:59,393 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4397 transitions. Word has length 77 [2020-12-22 05:58:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:59,393 INFO L481 AbstractCegarLoop]: Abstraction has 2351 states and 4397 transitions. [2020-12-22 05:58:59,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4397 transitions. [2020-12-22 05:58:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:58:59,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:59,396 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 05:58:59,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:58:59,396 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash -490445438, now seen corresponding path program 1 times [2020-12-22 05:58:59,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:59,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707077053] [2020-12-22 05:58:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:59,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707077053] [2020-12-22 05:58:59,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:59,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:59,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895910399] [2020-12-22 05:58:59,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:59,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:59,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:59,489 INFO L87 Difference]: Start difference. First operand 2351 states and 4397 transitions. Second operand 4 states. [2020-12-22 05:59:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:00,818 INFO L93 Difference]: Finished difference Result 6578 states and 12356 transitions. [2020-12-22 05:59:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:00,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 05:59:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:00,831 INFO L225 Difference]: With dead ends: 6578 [2020-12-22 05:59:00,832 INFO L226 Difference]: Without dead ends: 4291 [2020-12-22 05:59:00,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2020-12-22 05:59:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 2351. [2020-12-22 05:59:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-12-22 05:59:00,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4322 transitions. [2020-12-22 05:59:00,966 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4322 transitions. Word has length 78 [2020-12-22 05:59:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:00,966 INFO L481 AbstractCegarLoop]: Abstraction has 2351 states and 4322 transitions. [2020-12-22 05:59:00,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:00,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4322 transitions. [2020-12-22 05:59:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 05:59:00,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:00,970 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 05:59:00,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:59:00,970 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash -88309266, now seen corresponding path program 1 times [2020-12-22 05:59:00,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:00,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789767758] [2020-12-22 05:59:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:01,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789767758] [2020-12-22 05:59:01,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:01,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:01,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972896340] [2020-12-22 05:59:01,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:01,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:01,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:01,085 INFO L87 Difference]: Start difference. First operand 2351 states and 4322 transitions. Second operand 6 states. [2020-12-22 05:59:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:03,833 INFO L93 Difference]: Finished difference Result 19516 states and 36488 transitions. [2020-12-22 05:59:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:59:03,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-12-22 05:59:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:03,880 INFO L225 Difference]: With dead ends: 19516 [2020-12-22 05:59:03,880 INFO L226 Difference]: Without dead ends: 17247 [2020-12-22 05:59:03,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17247 states. [2020-12-22 05:59:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17247 to 4620. [2020-12-22 05:59:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4620 states. [2020-12-22 05:59:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 8526 transitions. [2020-12-22 05:59:04,334 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 8526 transitions. Word has length 86 [2020-12-22 05:59:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:04,334 INFO L481 AbstractCegarLoop]: Abstraction has 4620 states and 8526 transitions. [2020-12-22 05:59:04,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 8526 transitions. [2020-12-22 05:59:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 05:59:04,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:04,339 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 05:59:04,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:59:04,340 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1464743218, now seen corresponding path program 1 times [2020-12-22 05:59:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:04,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244164648] [2020-12-22 05:59:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:04,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244164648] [2020-12-22 05:59:04,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:04,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:04,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160439309] [2020-12-22 05:59:04,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:04,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:04,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:04,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:04,431 INFO L87 Difference]: Start difference. First operand 4620 states and 8526 transitions. Second operand 5 states. [2020-12-22 05:59:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:06,603 INFO L93 Difference]: Finished difference Result 18118 states and 33654 transitions. [2020-12-22 05:59:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:06,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 05:59:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:06,634 INFO L225 Difference]: With dead ends: 18118 [2020-12-22 05:59:06,634 INFO L226 Difference]: Without dead ends: 13643 [2020-12-22 05:59:06,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13643 states. [2020-12-22 05:59:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13643 to 4632. [2020-12-22 05:59:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4632 states. [2020-12-22 05:59:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 8538 transitions. [2020-12-22 05:59:06,948 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 8538 transitions. Word has length 88 [2020-12-22 05:59:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:06,948 INFO L481 AbstractCegarLoop]: Abstraction has 4632 states and 8538 transitions. [2020-12-22 05:59:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 8538 transitions. [2020-12-22 05:59:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 05:59:06,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:06,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:06,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:06,953 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -601667831, now seen corresponding path program 1 times [2020-12-22 05:59:06,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:06,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973083271] [2020-12-22 05:59:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:07,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973083271] [2020-12-22 05:59:07,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:07,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:07,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185520857] [2020-12-22 05:59:07,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:07,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:07,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:07,028 INFO L87 Difference]: Start difference. First operand 4632 states and 8538 transitions. Second operand 5 states. [2020-12-22 05:59:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:07,267 INFO L93 Difference]: Finished difference Result 9196 states and 16985 transitions. [2020-12-22 05:59:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:07,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 05:59:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:07,277 INFO L225 Difference]: With dead ends: 9196 [2020-12-22 05:59:07,277 INFO L226 Difference]: Without dead ends: 4643 [2020-12-22 05:59:07,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:07,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2020-12-22 05:59:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 4628. [2020-12-22 05:59:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4628 states. [2020-12-22 05:59:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 8528 transitions. [2020-12-22 05:59:07,530 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 8528 transitions. Word has length 88 [2020-12-22 05:59:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:07,530 INFO L481 AbstractCegarLoop]: Abstraction has 4628 states and 8528 transitions. [2020-12-22 05:59:07,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 8528 transitions. [2020-12-22 05:59:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 05:59:07,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:07,535 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 05:59:07,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:07,535 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:07,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1373180783, now seen corresponding path program 1 times [2020-12-22 05:59:07,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:07,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701055645] [2020-12-22 05:59:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:07,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701055645] [2020-12-22 05:59:07,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:07,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:07,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981719183] [2020-12-22 05:59:07,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:07,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:07,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:07,647 INFO L87 Difference]: Start difference. First operand 4628 states and 8528 transitions. Second operand 4 states. [2020-12-22 05:59:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:09,536 INFO L93 Difference]: Finished difference Result 15880 states and 29521 transitions. [2020-12-22 05:59:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:09,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 05:59:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:09,552 INFO L225 Difference]: With dead ends: 15880 [2020-12-22 05:59:09,552 INFO L226 Difference]: Without dead ends: 11354 [2020-12-22 05:59:09,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2020-12-22 05:59:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 6327. [2020-12-22 05:59:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6327 states. [2020-12-22 05:59:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6327 states to 6327 states and 11551 transitions. [2020-12-22 05:59:10,017 INFO L78 Accepts]: Start accepts. Automaton has 6327 states and 11551 transitions. Word has length 89 [2020-12-22 05:59:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:10,017 INFO L481 AbstractCegarLoop]: Abstraction has 6327 states and 11551 transitions. [2020-12-22 05:59:10,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6327 states and 11551 transitions. [2020-12-22 05:59:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 05:59:10,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:10,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:10,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:10,022 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash -296819361, now seen corresponding path program 1 times [2020-12-22 05:59:10,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:10,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084908941] [2020-12-22 05:59:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:10,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084908941] [2020-12-22 05:59:10,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:10,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:10,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982067115] [2020-12-22 05:59:10,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:10,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:10,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:10,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:10,087 INFO L87 Difference]: Start difference. First operand 6327 states and 11551 transitions. Second operand 5 states. [2020-12-22 05:59:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,326 INFO L93 Difference]: Finished difference Result 9459 states and 17275 transitions. [2020-12-22 05:59:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:10,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 05:59:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,333 INFO L225 Difference]: With dead ends: 9459 [2020-12-22 05:59:10,333 INFO L226 Difference]: Without dead ends: 3162 [2020-12-22 05:59:10,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2020-12-22 05:59:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2020-12-22 05:59:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2020-12-22 05:59:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5759 transitions. [2020-12-22 05:59:10,514 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5759 transitions. Word has length 89 [2020-12-22 05:59:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:10,515 INFO L481 AbstractCegarLoop]: Abstraction has 3162 states and 5759 transitions. [2020-12-22 05:59:10,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5759 transitions. [2020-12-22 05:59:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:59:10,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:10,517 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 05:59:10,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:10,518 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1693401207, now seen corresponding path program 1 times [2020-12-22 05:59:10,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:10,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234125923] [2020-12-22 05:59:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:10,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234125923] [2020-12-22 05:59:10,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:10,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:10,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003618813] [2020-12-22 05:59:10,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:10,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:10,599 INFO L87 Difference]: Start difference. First operand 3162 states and 5759 transitions. Second operand 5 states. [2020-12-22 05:59:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:11,847 INFO L93 Difference]: Finished difference Result 22572 states and 41472 transitions. [2020-12-22 05:59:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:11,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 05:59:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:11,873 INFO L225 Difference]: With dead ends: 22572 [2020-12-22 05:59:11,873 INFO L226 Difference]: Without dead ends: 19482 [2020-12-22 05:59:11,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19482 states. [2020-12-22 05:59:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19482 to 5767. [2020-12-22 05:59:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5767 states. [2020-12-22 05:59:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 10583 transitions. [2020-12-22 05:59:12,315 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 10583 transitions. Word has length 91 [2020-12-22 05:59:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:12,315 INFO L481 AbstractCegarLoop]: Abstraction has 5767 states and 10583 transitions. [2020-12-22 05:59:12,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 10583 transitions. [2020-12-22 05:59:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:59:12,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:12,318 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 05:59:12,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:12,318 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1968160821, now seen corresponding path program 1 times [2020-12-22 05:59:12,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:12,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884967246] [2020-12-22 05:59:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:12,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884967246] [2020-12-22 05:59:12,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:12,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092695949] [2020-12-22 05:59:12,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:12,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:12,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:12,404 INFO L87 Difference]: Start difference. First operand 5767 states and 10583 transitions. Second operand 6 states. [2020-12-22 05:59:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:13,594 INFO L93 Difference]: Finished difference Result 10452 states and 19106 transitions. [2020-12-22 05:59:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:59:13,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-12-22 05:59:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:13,607 INFO L225 Difference]: With dead ends: 10452 [2020-12-22 05:59:13,607 INFO L226 Difference]: Without dead ends: 7938 [2020-12-22 05:59:13,613 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 05:59:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-12-22 05:59:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 5757. [2020-12-22 05:59:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5757 states. [2020-12-22 05:59:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 10563 transitions. [2020-12-22 05:59:13,925 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 10563 transitions. Word has length 91 [2020-12-22 05:59:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:13,925 INFO L481 AbstractCegarLoop]: Abstraction has 5757 states and 10563 transitions. [2020-12-22 05:59:13,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 10563 transitions. [2020-12-22 05:59:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 05:59:13,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:13,928 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] [2020-12-22 05:59:13,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:59:13,928 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash -928141317, now seen corresponding path program 1 times [2020-12-22 05:59:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:13,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593669838] [2020-12-22 05:59:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:14,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593669838] [2020-12-22 05:59:14,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:14,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266068123] [2020-12-22 05:59:14,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:14,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:14,008 INFO L87 Difference]: Start difference. First operand 5757 states and 10563 transitions. Second operand 5 states. [2020-12-22 05:59:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:15,166 INFO L93 Difference]: Finished difference Result 17573 states and 32307 transitions. [2020-12-22 05:59:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:15,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 05:59:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:15,189 INFO L225 Difference]: With dead ends: 17573 [2020-12-22 05:59:15,189 INFO L226 Difference]: Without dead ends: 15065 [2020-12-22 05:59:15,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15065 states. [2020-12-22 05:59:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15065 to 8004. [2020-12-22 05:59:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8004 states. [2020-12-22 05:59:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 14651 transitions. [2020-12-22 05:59:15,556 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 14651 transitions. Word has length 93 [2020-12-22 05:59:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:15,556 INFO L481 AbstractCegarLoop]: Abstraction has 8004 states and 14651 transitions. [2020-12-22 05:59:15,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 14651 transitions. [2020-12-22 05:59:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:59:15,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:15,558 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] [2020-12-22 05:59:15,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:59:15,558 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash 532396301, now seen corresponding path program 1 times [2020-12-22 05:59:15,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:15,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031883923] [2020-12-22 05:59:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:15,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031883923] [2020-12-22 05:59:15,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:15,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:15,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274592114] [2020-12-22 05:59:15,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:15,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:15,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:15,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:15,631 INFO L87 Difference]: Start difference. First operand 8004 states and 14651 transitions. Second operand 5 states. [2020-12-22 05:59:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,364 INFO L93 Difference]: Finished difference Result 16652 states and 30361 transitions. [2020-12-22 05:59:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:16,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 05:59:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,378 INFO L225 Difference]: With dead ends: 16652 [2020-12-22 05:59:16,378 INFO L226 Difference]: Without dead ends: 12114 [2020-12-22 05:59:16,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2020-12-22 05:59:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 8021. [2020-12-22 05:59:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8021 states. [2020-12-22 05:59:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 14664 transitions. [2020-12-22 05:59:16,741 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 14664 transitions. Word has length 95 [2020-12-22 05:59:16,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:16,742 INFO L481 AbstractCegarLoop]: Abstraction has 8021 states and 14664 transitions. [2020-12-22 05:59:16,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 14664 transitions. [2020-12-22 05:59:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 05:59:16,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:16,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:16,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:59:16,745 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash -659142071, now seen corresponding path program 1 times [2020-12-22 05:59:16,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:16,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858395330] [2020-12-22 05:59:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:16,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858395330] [2020-12-22 05:59:16,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:16,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:16,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828413306] [2020-12-22 05:59:16,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:16,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:16,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:16,825 INFO L87 Difference]: Start difference. First operand 8021 states and 14664 transitions. Second operand 5 states. [2020-12-22 05:59:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:18,268 INFO L93 Difference]: Finished difference Result 18260 states and 33547 transitions. [2020-12-22 05:59:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:18,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-12-22 05:59:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:18,284 INFO L225 Difference]: With dead ends: 18260 [2020-12-22 05:59:18,284 INFO L226 Difference]: Without dead ends: 11659 [2020-12-22 05:59:18,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11659 states. [2020-12-22 05:59:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 8021. [2020-12-22 05:59:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8021 states. [2020-12-22 05:59:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 14589 transitions. [2020-12-22 05:59:18,641 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 14589 transitions. Word has length 102 [2020-12-22 05:59:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:18,642 INFO L481 AbstractCegarLoop]: Abstraction has 8021 states and 14589 transitions. [2020-12-22 05:59:18,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 14589 transitions. [2020-12-22 05:59:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 05:59:18,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:18,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:18,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:59:18,645 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1749900262, now seen corresponding path program 1 times [2020-12-22 05:59:18,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:18,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237552873] [2020-12-22 05:59:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:18,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237552873] [2020-12-22 05:59:18,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:18,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:18,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029927355] [2020-12-22 05:59:18,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:18,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:18,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:18,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:18,732 INFO L87 Difference]: Start difference. First operand 8021 states and 14589 transitions. Second operand 6 states. [2020-12-22 05:59:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:19,291 INFO L93 Difference]: Finished difference Result 12925 states and 23353 transitions. [2020-12-22 05:59:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:19,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-12-22 05:59:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:19,302 INFO L225 Difference]: With dead ends: 12925 [2020-12-22 05:59:19,302 INFO L226 Difference]: Without dead ends: 8036 [2020-12-22 05:59:19,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8036 states. [2020-12-22 05:59:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8036 to 8021. [2020-12-22 05:59:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8021 states. [2020-12-22 05:59:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 14487 transitions. [2020-12-22 05:59:19,721 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 14487 transitions. Word has length 102 [2020-12-22 05:59:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:19,721 INFO L481 AbstractCegarLoop]: Abstraction has 8021 states and 14487 transitions. [2020-12-22 05:59:19,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 14487 transitions. [2020-12-22 05:59:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 05:59:19,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:19,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:19,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:19,725 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash -615205102, now seen corresponding path program 1 times [2020-12-22 05:59:19,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:19,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771635942] [2020-12-22 05:59:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:19,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771635942] [2020-12-22 05:59:19,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:19,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:19,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85855239] [2020-12-22 05:59:19,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:19,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:19,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:19,797 INFO L87 Difference]: Start difference. First operand 8021 states and 14487 transitions. Second operand 3 states. [2020-12-22 05:59:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,227 INFO L93 Difference]: Finished difference Result 14498 states and 26158 transitions. [2020-12-22 05:59:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:20,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 05:59:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,238 INFO L225 Difference]: With dead ends: 14498 [2020-12-22 05:59:20,238 INFO L226 Difference]: Without dead ends: 7999 [2020-12-22 05:59:20,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2020-12-22 05:59:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7999. [2020-12-22 05:59:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2020-12-22 05:59:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 14445 transitions. [2020-12-22 05:59:20,688 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 14445 transitions. Word has length 103 [2020-12-22 05:59:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:20,689 INFO L481 AbstractCegarLoop]: Abstraction has 7999 states and 14445 transitions. [2020-12-22 05:59:20,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 14445 transitions. [2020-12-22 05:59:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 05:59:20,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:20,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:20,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:20,692 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:20,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1684819051, now seen corresponding path program 1 times [2020-12-22 05:59:20,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:20,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230930868] [2020-12-22 05:59:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:20,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230930868] [2020-12-22 05:59:20,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:20,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:20,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872574240] [2020-12-22 05:59:20,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:20,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:20,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:20,775 INFO L87 Difference]: Start difference. First operand 7999 states and 14445 transitions. Second operand 5 states. [2020-12-22 05:59:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:22,574 INFO L93 Difference]: Finished difference Result 32600 states and 57426 transitions. [2020-12-22 05:59:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:22,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 05:59:22,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:22,608 INFO L225 Difference]: With dead ends: 32600 [2020-12-22 05:59:22,609 INFO L226 Difference]: Without dead ends: 28113 [2020-12-22 05:59:22,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28113 states. [2020-12-22 05:59:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28113 to 9906. [2020-12-22 05:59:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9906 states. [2020-12-22 05:59:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9906 states to 9906 states and 17335 transitions. [2020-12-22 05:59:23,329 INFO L78 Accepts]: Start accepts. Automaton has 9906 states and 17335 transitions. Word has length 105 [2020-12-22 05:59:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:23,329 INFO L481 AbstractCegarLoop]: Abstraction has 9906 states and 17335 transitions. [2020-12-22 05:59:23,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9906 states and 17335 transitions. [2020-12-22 05:59:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 05:59:23,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:23,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:23,333 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2000126701, now seen corresponding path program 1 times [2020-12-22 05:59:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343195138] [2020-12-22 05:59:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:23,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343195138] [2020-12-22 05:59:23,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:23,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:23,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939363781] [2020-12-22 05:59:23,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:23,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:23,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:23,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:23,495 INFO L87 Difference]: Start difference. First operand 9906 states and 17335 transitions. Second operand 5 states. [2020-12-22 05:59:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:24,666 INFO L93 Difference]: Finished difference Result 16308 states and 28650 transitions. [2020-12-22 05:59:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:24,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 05:59:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:24,684 INFO L225 Difference]: With dead ends: 16308 [2020-12-22 05:59:24,685 INFO L226 Difference]: Without dead ends: 16295 [2020-12-22 05:59:24,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16295 states. [2020-12-22 05:59:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16295 to 9924. [2020-12-22 05:59:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9924 states. [2020-12-22 05:59:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 17353 transitions. [2020-12-22 05:59:25,289 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 17353 transitions. Word has length 105 [2020-12-22 05:59:25,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:25,289 INFO L481 AbstractCegarLoop]: Abstraction has 9924 states and 17353 transitions. [2020-12-22 05:59:25,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 17353 transitions. [2020-12-22 05:59:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 05:59:25,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:25,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:25,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:25,292 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash 702721368, now seen corresponding path program 1 times [2020-12-22 05:59:25,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:25,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166891780] [2020-12-22 05:59:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:25,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166891780] [2020-12-22 05:59:25,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:25,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:25,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452259743] [2020-12-22 05:59:25,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:25,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:25,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:25,413 INFO L87 Difference]: Start difference. First operand 9924 states and 17353 transitions. Second operand 6 states. [2020-12-22 05:59:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:26,112 INFO L93 Difference]: Finished difference Result 9943 states and 17371 transitions. [2020-12-22 05:59:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:26,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-12-22 05:59:26,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:26,124 INFO L225 Difference]: With dead ends: 9943 [2020-12-22 05:59:26,124 INFO L226 Difference]: Without dead ends: 9930 [2020-12-22 05:59:26,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9930 states. [2020-12-22 05:59:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9930 to 9924. [2020-12-22 05:59:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9924 states. [2020-12-22 05:59:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 17343 transitions. [2020-12-22 05:59:26,796 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 17343 transitions. Word has length 107 [2020-12-22 05:59:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:26,796 INFO L481 AbstractCegarLoop]: Abstraction has 9924 states and 17343 transitions. [2020-12-22 05:59:26,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 17343 transitions. [2020-12-22 05:59:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 05:59:26,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:26,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:26,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:59:26,800 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1550576655, now seen corresponding path program 1 times [2020-12-22 05:59:26,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:26,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621024777] [2020-12-22 05:59:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:26,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621024777] [2020-12-22 05:59:26,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:26,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:26,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653337899] [2020-12-22 05:59:26,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:26,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:26,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:26,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:26,895 INFO L87 Difference]: Start difference. First operand 9924 states and 17343 transitions. Second operand 5 states. [2020-12-22 05:59:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:28,397 INFO L93 Difference]: Finished difference Result 23040 states and 40385 transitions. [2020-12-22 05:59:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:28,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 05:59:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:28,415 INFO L225 Difference]: With dead ends: 23040 [2020-12-22 05:59:28,415 INFO L226 Difference]: Without dead ends: 14919 [2020-12-22 05:59:28,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14919 states. [2020-12-22 05:59:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14919 to 9924. [2020-12-22 05:59:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9924 states. [2020-12-22 05:59:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 17333 transitions. [2020-12-22 05:59:29,026 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 17333 transitions. Word has length 114 [2020-12-22 05:59:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:29,027 INFO L481 AbstractCegarLoop]: Abstraction has 9924 states and 17333 transitions. [2020-12-22 05:59:29,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 17333 transitions. [2020-12-22 05:59:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 05:59:29,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:29,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:29,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:59:29,031 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1827353025, now seen corresponding path program 1 times [2020-12-22 05:59:29,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:29,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862414406] [2020-12-22 05:59:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862414406] [2020-12-22 05:59:29,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:29,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:29,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685720233] [2020-12-22 05:59:29,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:29,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:29,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:29,160 INFO L87 Difference]: Start difference. First operand 9924 states and 17333 transitions. Second operand 5 states. [2020-12-22 05:59:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:30,176 INFO L93 Difference]: Finished difference Result 15779 states and 27720 transitions. [2020-12-22 05:59:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:30,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-12-22 05:59:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:30,196 INFO L225 Difference]: With dead ends: 15779 [2020-12-22 05:59:30,197 INFO L226 Difference]: Without dead ends: 15766 [2020-12-22 05:59:30,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2020-12-22 05:59:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 9939. [2020-12-22 05:59:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9939 states. [2020-12-22 05:59:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9939 states to 9939 states and 17343 transitions. [2020-12-22 05:59:30,824 INFO L78 Accepts]: Start accepts. Automaton has 9939 states and 17343 transitions. Word has length 119 [2020-12-22 05:59:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:30,824 INFO L481 AbstractCegarLoop]: Abstraction has 9939 states and 17343 transitions. [2020-12-22 05:59:30,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:30,825 INFO L276 IsEmpty]: Start isEmpty. Operand 9939 states and 17343 transitions. [2020-12-22 05:59:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 05:59:30,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:30,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:30,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:59:30,829 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:30,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2122199110, now seen corresponding path program 1 times [2020-12-22 05:59:30,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:30,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687142470] [2020-12-22 05:59:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:30,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687142470] [2020-12-22 05:59:30,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:30,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:30,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452211304] [2020-12-22 05:59:30,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:30,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:30,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:30,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:30,939 INFO L87 Difference]: Start difference. First operand 9939 states and 17343 transitions. Second operand 5 states. [2020-12-22 05:59:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:34,240 INFO L93 Difference]: Finished difference Result 48924 states and 87426 transitions. [2020-12-22 05:59:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:34,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 05:59:34,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:34,294 INFO L225 Difference]: With dead ends: 48924 [2020-12-22 05:59:34,294 INFO L226 Difference]: Without dead ends: 40788 [2020-12-22 05:59:34,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40788 states. [2020-12-22 05:59:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40788 to 19171. [2020-12-22 05:59:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19171 states. [2020-12-22 05:59:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19171 states to 19171 states and 33586 transitions. [2020-12-22 05:59:35,718 INFO L78 Accepts]: Start accepts. Automaton has 19171 states and 33586 transitions. Word has length 138 [2020-12-22 05:59:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:35,718 INFO L481 AbstractCegarLoop]: Abstraction has 19171 states and 33586 transitions. [2020-12-22 05:59:35,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19171 states and 33586 transitions. [2020-12-22 05:59:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 05:59:35,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:35,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:35,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:59:35,724 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -132564823, now seen corresponding path program 1 times [2020-12-22 05:59:35,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:35,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190652654] [2020-12-22 05:59:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:35,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190652654] [2020-12-22 05:59:35,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:35,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:35,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283454896] [2020-12-22 05:59:35,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:35,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:35,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:35,801 INFO L87 Difference]: Start difference. First operand 19171 states and 33586 transitions. Second operand 3 states. [2020-12-22 05:59:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:38,119 INFO L93 Difference]: Finished difference Result 44428 states and 77992 transitions. [2020-12-22 05:59:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:38,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-22 05:59:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:38,155 INFO L225 Difference]: With dead ends: 44428 [2020-12-22 05:59:38,155 INFO L226 Difference]: Without dead ends: 27793 [2020-12-22 05:59:38,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27793 states. [2020-12-22 05:59:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27793 to 18739. [2020-12-22 05:59:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18739 states. [2020-12-22 05:59:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18739 states to 18739 states and 32693 transitions. [2020-12-22 05:59:39,533 INFO L78 Accepts]: Start accepts. Automaton has 18739 states and 32693 transitions. Word has length 139 [2020-12-22 05:59:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:39,533 INFO L481 AbstractCegarLoop]: Abstraction has 18739 states and 32693 transitions. [2020-12-22 05:59:39,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 18739 states and 32693 transitions. [2020-12-22 05:59:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 05:59:39,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:39,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:39,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 05:59:39,540 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:39,541 INFO L82 PathProgramCache]: Analyzing trace with hash -374585061, now seen corresponding path program 1 times [2020-12-22 05:59:39,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:39,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379942029] [2020-12-22 05:59:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:39,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379942029] [2020-12-22 05:59:39,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:39,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:39,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953066973] [2020-12-22 05:59:39,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:39,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:39,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:39,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:39,634 INFO L87 Difference]: Start difference. First operand 18739 states and 32693 transitions. Second operand 5 states. [2020-12-22 05:59:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:42,023 INFO L93 Difference]: Finished difference Result 43998 states and 74998 transitions. [2020-12-22 05:59:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:42,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-12-22 05:59:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:42,061 INFO L225 Difference]: With dead ends: 43998 [2020-12-22 05:59:42,062 INFO L226 Difference]: Without dead ends: 25727 [2020-12-22 05:59:42,077 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 05:59:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25727 states. [2020-12-22 05:59:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25727 to 18802. [2020-12-22 05:59:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18802 states. [2020-12-22 05:59:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18802 states to 18802 states and 32756 transitions. [2020-12-22 05:59:43,499 INFO L78 Accepts]: Start accepts. Automaton has 18802 states and 32756 transitions. Word has length 151 [2020-12-22 05:59:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:43,500 INFO L481 AbstractCegarLoop]: Abstraction has 18802 states and 32756 transitions. [2020-12-22 05:59:43,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 18802 states and 32756 transitions. [2020-12-22 05:59:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 05:59:43,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:43,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:43,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 05:59:43,506 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1269448660, now seen corresponding path program 1 times [2020-12-22 05:59:43,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:43,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669571469] [2020-12-22 05:59:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:43,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669571469] [2020-12-22 05:59:43,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:43,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:43,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401328153] [2020-12-22 05:59:43,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:43,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:43,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:43,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:43,594 INFO L87 Difference]: Start difference. First operand 18802 states and 32756 transitions. Second operand 4 states. [2020-12-22 05:59:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,792 INFO L93 Difference]: Finished difference Result 42440 states and 73199 transitions. [2020-12-22 05:59:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:45,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 05:59:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,821 INFO L225 Difference]: With dead ends: 42440 [2020-12-22 05:59:45,822 INFO L226 Difference]: Without dead ends: 23704 [2020-12-22 05:59:45,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23704 states. [2020-12-22 05:59:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23704 to 12059. [2020-12-22 05:59:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12059 states. [2020-12-22 05:59:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12059 states to 12059 states and 20563 transitions. [2020-12-22 05:59:46,974 INFO L78 Accepts]: Start accepts. Automaton has 12059 states and 20563 transitions. Word has length 152 [2020-12-22 05:59:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:46,975 INFO L481 AbstractCegarLoop]: Abstraction has 12059 states and 20563 transitions. [2020-12-22 05:59:46,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 12059 states and 20563 transitions. [2020-12-22 05:59:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 05:59:46,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:46,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:46,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 05:59:46,983 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1841954536, now seen corresponding path program 1 times [2020-12-22 05:59:46,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:46,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033207141] [2020-12-22 05:59:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:47,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033207141] [2020-12-22 05:59:47,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:47,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:47,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484467290] [2020-12-22 05:59:47,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:47,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:47,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:47,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:47,087 INFO L87 Difference]: Start difference. First operand 12059 states and 20563 transitions. Second operand 5 states. [2020-12-22 05:59:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:48,395 INFO L93 Difference]: Finished difference Result 24077 states and 41065 transitions. [2020-12-22 05:59:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:48,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-12-22 05:59:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:48,414 INFO L225 Difference]: With dead ends: 24077 [2020-12-22 05:59:48,414 INFO L226 Difference]: Without dead ends: 12480 [2020-12-22 05:59:48,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2020-12-22 05:59:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 12035. [2020-12-22 05:59:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12035 states. [2020-12-22 05:59:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 20523 transitions. [2020-12-22 05:59:49,460 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 20523 transitions. Word has length 168 [2020-12-22 05:59:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:49,460 INFO L481 AbstractCegarLoop]: Abstraction has 12035 states and 20523 transitions. [2020-12-22 05:59:49,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 20523 transitions. [2020-12-22 05:59:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 05:59:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:49,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:49,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 05:59:49,467 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:49,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1071593038, now seen corresponding path program 1 times [2020-12-22 05:59:49,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:49,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102766653] [2020-12-22 05:59:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:49,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102766653] [2020-12-22 05:59:49,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:49,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:49,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098699341] [2020-12-22 05:59:49,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:49,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:49,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:49,637 INFO L87 Difference]: Start difference. First operand 12035 states and 20523 transitions. Second operand 5 states. [2020-12-22 05:59:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:53,072 INFO L93 Difference]: Finished difference Result 43250 states and 75077 transitions. [2020-12-22 05:59:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:53,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-12-22 05:59:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:53,108 INFO L225 Difference]: With dead ends: 43250 [2020-12-22 05:59:53,108 INFO L226 Difference]: Without dead ends: 31677 [2020-12-22 05:59:53,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31677 states. [2020-12-22 05:59:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31677 to 21491. [2020-12-22 05:59:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21491 states. [2020-12-22 05:59:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21491 states to 21491 states and 37135 transitions. [2020-12-22 05:59:54,905 INFO L78 Accepts]: Start accepts. Automaton has 21491 states and 37135 transitions. Word has length 170 [2020-12-22 05:59:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:54,905 INFO L481 AbstractCegarLoop]: Abstraction has 21491 states and 37135 transitions. [2020-12-22 05:59:54,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 21491 states and 37135 transitions. [2020-12-22 05:59:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 05:59:54,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:54,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:54,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 05:59:54,912 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:54,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2034245960, now seen corresponding path program 1 times [2020-12-22 05:59:54,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:54,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011324638] [2020-12-22 05:59:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:55,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011324638] [2020-12-22 05:59:55,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:55,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:55,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849893288] [2020-12-22 05:59:55,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:55,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:55,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:55,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:55,051 INFO L87 Difference]: Start difference. First operand 21491 states and 37135 transitions. Second operand 5 states. [2020-12-22 05:59:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:58,671 INFO L93 Difference]: Finished difference Result 50406 states and 86994 transitions. [2020-12-22 05:59:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:58,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-12-22 05:59:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:58,707 INFO L225 Difference]: With dead ends: 50406 [2020-12-22 05:59:58,707 INFO L226 Difference]: Without dead ends: 29377 [2020-12-22 05:59:58,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29377 states. [2020-12-22 06:00:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29377 to 21491. [2020-12-22 06:00:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21491 states. [2020-12-22 06:00:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21491 states to 21491 states and 37127 transitions. [2020-12-22 06:00:00,582 INFO L78 Accepts]: Start accepts. Automaton has 21491 states and 37127 transitions. Word has length 171 [2020-12-22 06:00:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:00,582 INFO L481 AbstractCegarLoop]: Abstraction has 21491 states and 37127 transitions. [2020-12-22 06:00:00,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21491 states and 37127 transitions. [2020-12-22 06:00:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 06:00:00,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:00,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:00,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:00:00,591 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash 239768631, now seen corresponding path program 1 times [2020-12-22 06:00:00,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:00,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936968762] [2020-12-22 06:00:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:00,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936968762] [2020-12-22 06:00:00,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:00,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:00,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952027488] [2020-12-22 06:00:00,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:00,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:00,762 INFO L87 Difference]: Start difference. First operand 21491 states and 37127 transitions. Second operand 5 states. [2020-12-22 06:00:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:05,164 INFO L93 Difference]: Finished difference Result 54978 states and 95069 transitions. [2020-12-22 06:00:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:05,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-12-22 06:00:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:05,205 INFO L225 Difference]: With dead ends: 54978 [2020-12-22 06:00:05,205 INFO L226 Difference]: Without dead ends: 33949 [2020-12-22 06:00:05,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33949 states. [2020-12-22 06:00:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33949 to 21491. [2020-12-22 06:00:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21491 states. [2020-12-22 06:00:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21491 states to 21491 states and 37111 transitions. [2020-12-22 06:00:07,542 INFO L78 Accepts]: Start accepts. Automaton has 21491 states and 37111 transitions. Word has length 172 [2020-12-22 06:00:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:07,543 INFO L481 AbstractCegarLoop]: Abstraction has 21491 states and 37111 transitions. [2020-12-22 06:00:07,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 21491 states and 37111 transitions. [2020-12-22 06:00:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 06:00:07,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:07,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:00:07,549 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,549 INFO L82 PathProgramCache]: Analyzing trace with hash 35169709, now seen corresponding path program 1 times [2020-12-22 06:00:07,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873302799] [2020-12-22 06:00:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:07,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873302799] [2020-12-22 06:00:07,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:07,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644625790] [2020-12-22 06:00:07,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:07,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:07,683 INFO L87 Difference]: Start difference. First operand 21491 states and 37111 transitions. Second operand 4 states. [2020-12-22 06:00:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,954 INFO L93 Difference]: Finished difference Result 68650 states and 121488 transitions. [2020-12-22 06:00:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:11,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-12-22 06:00:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,012 INFO L225 Difference]: With dead ends: 68650 [2020-12-22 06:00:12,012 INFO L226 Difference]: Without dead ends: 47621 [2020-12-22 06:00:12,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 06:00:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47621 states. [2020-12-22 06:00:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47621 to 33659. [2020-12-22 06:00:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33659 states. [2020-12-22 06:00:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33659 states to 33659 states and 58648 transitions. [2020-12-22 06:00:15,309 INFO L78 Accepts]: Start accepts. Automaton has 33659 states and 58648 transitions. Word has length 173 [2020-12-22 06:00:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:15,309 INFO L481 AbstractCegarLoop]: Abstraction has 33659 states and 58648 transitions. [2020-12-22 06:00:15,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 33659 states and 58648 transitions. [2020-12-22 06:00:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 06:00:15,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:15,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:15,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:00:15,317 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:15,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:15,317 INFO L82 PathProgramCache]: Analyzing trace with hash -228738979, now seen corresponding path program 1 times [2020-12-22 06:00:15,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:15,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541236663] [2020-12-22 06:00:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:15,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541236663] [2020-12-22 06:00:15,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:15,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:15,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923121568] [2020-12-22 06:00:15,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:15,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:15,455 INFO L87 Difference]: Start difference. First operand 33659 states and 58648 transitions. Second operand 5 states. [2020-12-22 06:00:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:21,149 INFO L93 Difference]: Finished difference Result 80802 states and 139959 transitions. [2020-12-22 06:00:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:21,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-12-22 06:00:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:21,217 INFO L225 Difference]: With dead ends: 80802 [2020-12-22 06:00:21,217 INFO L226 Difference]: Without dead ends: 47605 [2020-12-22 06:00:21,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47605 states. [2020-12-22 06:00:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47605 to 33659. [2020-12-22 06:00:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33659 states. [2020-12-22 06:00:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33659 states to 33659 states and 58628 transitions. [2020-12-22 06:00:24,298 INFO L78 Accepts]: Start accepts. Automaton has 33659 states and 58628 transitions. Word has length 173 [2020-12-22 06:00:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:24,298 INFO L481 AbstractCegarLoop]: Abstraction has 33659 states and 58628 transitions. [2020-12-22 06:00:24,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 33659 states and 58628 transitions. [2020-12-22 06:00:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 06:00:24,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:24,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:24,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:00:24,310 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 183911100, now seen corresponding path program 1 times [2020-12-22 06:00:24,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:24,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760044773] [2020-12-22 06:00:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:24,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760044773] [2020-12-22 06:00:24,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:24,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:24,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598398425] [2020-12-22 06:00:24,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:24,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:24,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:24,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:24,450 INFO L87 Difference]: Start difference. First operand 33659 states and 58628 transitions. Second operand 5 states. [2020-12-22 06:00:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:30,109 INFO L93 Difference]: Finished difference Result 74106 states and 127521 transitions. [2020-12-22 06:00:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:30,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-12-22 06:00:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:30,162 INFO L225 Difference]: With dead ends: 74106 [2020-12-22 06:00:30,162 INFO L226 Difference]: Without dead ends: 40909 [2020-12-22 06:00:30,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40909 states. [2020-12-22 06:00:33,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40909 to 33627. [2020-12-22 06:00:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33627 states. [2020-12-22 06:00:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33627 states to 33627 states and 58560 transitions. [2020-12-22 06:00:33,366 INFO L78 Accepts]: Start accepts. Automaton has 33627 states and 58560 transitions. Word has length 174 [2020-12-22 06:00:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:33,366 INFO L481 AbstractCegarLoop]: Abstraction has 33627 states and 58560 transitions. [2020-12-22 06:00:33,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 33627 states and 58560 transitions. [2020-12-22 06:00:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 06:00:33,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:33,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:33,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:00:33,375 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:33,376 INFO L82 PathProgramCache]: Analyzing trace with hash -713482178, now seen corresponding path program 1 times [2020-12-22 06:00:33,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:33,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138537787] [2020-12-22 06:00:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:33,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138537787] [2020-12-22 06:00:33,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:33,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:33,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224304820] [2020-12-22 06:00:33,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:33,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:33,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:33,503 INFO L87 Difference]: Start difference. First operand 33627 states and 58560 transitions. Second operand 4 states. [2020-12-22 06:00:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:38,272 INFO L93 Difference]: Finished difference Result 76593 states and 133698 transitions. [2020-12-22 06:00:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:38,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-12-22 06:00:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:38,342 INFO L225 Difference]: With dead ends: 76593 [2020-12-22 06:00:38,342 INFO L226 Difference]: Without dead ends: 43380 [2020-12-22 06:00:38,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43380 states. [2020-12-22 06:00:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43380 to 42967. [2020-12-22 06:00:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42967 states. [2020-12-22 06:00:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42967 states to 42967 states and 74601 transitions. [2020-12-22 06:00:42,277 INFO L78 Accepts]: Start accepts. Automaton has 42967 states and 74601 transitions. Word has length 174 [2020-12-22 06:00:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:42,277 INFO L481 AbstractCegarLoop]: Abstraction has 42967 states and 74601 transitions. [2020-12-22 06:00:42,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 42967 states and 74601 transitions. [2020-12-22 06:00:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 06:00:42,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:42,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:42,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:00:42,287 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1150992613, now seen corresponding path program 1 times [2020-12-22 06:00:42,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:42,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292139386] [2020-12-22 06:00:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:42,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292139386] [2020-12-22 06:00:42,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:42,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32627264] [2020-12-22 06:00:42,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:42,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:42,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:42,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:42,446 INFO L87 Difference]: Start difference. First operand 42967 states and 74601 transitions. Second operand 7 states. [2020-12-22 06:00:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:49,163 INFO L93 Difference]: Finished difference Result 122836 states and 217683 transitions. [2020-12-22 06:00:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:00:49,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-12-22 06:00:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:49,280 INFO L225 Difference]: With dead ends: 122836 [2020-12-22 06:00:49,280 INFO L226 Difference]: Without dead ends: 80051 [2020-12-22 06:00:49,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80051 states. [2020-12-22 06:00:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80051 to 40575. [2020-12-22 06:00:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40575 states. [2020-12-22 06:00:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40575 states to 40575 states and 70933 transitions. [2020-12-22 06:00:53,115 INFO L78 Accepts]: Start accepts. Automaton has 40575 states and 70933 transitions. Word has length 175 [2020-12-22 06:00:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:53,116 INFO L481 AbstractCegarLoop]: Abstraction has 40575 states and 70933 transitions. [2020-12-22 06:00:53,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 40575 states and 70933 transitions. [2020-12-22 06:00:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-22 06:00:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:53,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:53,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:00:53,127 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1275266621, now seen corresponding path program 1 times [2020-12-22 06:00:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:53,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471114270] [2020-12-22 06:00:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:53,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471114270] [2020-12-22 06:00:53,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:53,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:53,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015088631] [2020-12-22 06:00:53,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:53,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:53,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:53,248 INFO L87 Difference]: Start difference. First operand 40575 states and 70933 transitions. Second operand 4 states. [2020-12-22 06:00:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:58,309 INFO L93 Difference]: Finished difference Result 89081 states and 156194 transitions. [2020-12-22 06:00:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:58,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-12-22 06:00:58,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:58,373 INFO L225 Difference]: With dead ends: 89081 [2020-12-22 06:00:58,374 INFO L226 Difference]: Without dead ends: 48968 [2020-12-22 06:00:58,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48968 states. [2020-12-22 06:01:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48968 to 48459. [2020-12-22 06:01:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48459 states. [2020-12-22 06:01:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48459 states to 48459 states and 85118 transitions. [2020-12-22 06:01:02,985 INFO L78 Accepts]: Start accepts. Automaton has 48459 states and 85118 transitions. Word has length 176 [2020-12-22 06:01:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:02,985 INFO L481 AbstractCegarLoop]: Abstraction has 48459 states and 85118 transitions. [2020-12-22 06:01:02,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 48459 states and 85118 transitions. [2020-12-22 06:01:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 06:01:02,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:02,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:02,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:01:02,996 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1429593462, now seen corresponding path program 1 times [2020-12-22 06:01:02,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:02,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570527615] [2020-12-22 06:01:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:03,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570527615] [2020-12-22 06:01:03,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:03,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:03,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669474023] [2020-12-22 06:01:03,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:03,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:03,100 INFO L87 Difference]: Start difference. First operand 48459 states and 85118 transitions. Second operand 4 states. [2020-12-22 06:01:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:10,534 INFO L93 Difference]: Finished difference Result 134922 states and 241084 transitions. [2020-12-22 06:01:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:10,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-12-22 06:01:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:10,668 INFO L225 Difference]: With dead ends: 134922 [2020-12-22 06:01:10,668 INFO L226 Difference]: Without dead ends: 86595 [2020-12-22 06:01:10,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86595 states. [2020-12-22 06:01:15,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86595 to 48459. [2020-12-22 06:01:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48459 states. [2020-12-22 06:01:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48459 states to 48459 states and 84820 transitions. [2020-12-22 06:01:15,564 INFO L78 Accepts]: Start accepts. Automaton has 48459 states and 84820 transitions. Word has length 178 [2020-12-22 06:01:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:15,565 INFO L481 AbstractCegarLoop]: Abstraction has 48459 states and 84820 transitions. [2020-12-22 06:01:15,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 48459 states and 84820 transitions. [2020-12-22 06:01:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-22 06:01:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:15,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:15,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:01:15,574 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash -558731724, now seen corresponding path program 1 times [2020-12-22 06:01:15,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:15,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689129466] [2020-12-22 06:01:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689129466] [2020-12-22 06:01:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388136756] [2020-12-22 06:01:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:01:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:16,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:01:16,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:01:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 06:01:16,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-12-22 06:01:16,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788342285] [2020-12-22 06:01:16,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:01:16,352 INFO L87 Difference]: Start difference. First operand 48459 states and 84820 transitions. Second operand 4 states. [2020-12-22 06:01:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:24,465 INFO L93 Difference]: Finished difference Result 123551 states and 217701 transitions. [2020-12-22 06:01:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:24,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-12-22 06:01:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:24,756 INFO L225 Difference]: With dead ends: 123551 [2020-12-22 06:01:24,756 INFO L226 Difference]: Without dead ends: 75290 [2020-12-22 06:01:24,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:01:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75290 states. [2020-12-22 06:01:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75290 to 66659. [2020-12-22 06:01:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66659 states. [2020-12-22 06:01:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66659 states to 66659 states and 117490 transitions. [2020-12-22 06:01:31,224 INFO L78 Accepts]: Start accepts. Automaton has 66659 states and 117490 transitions. Word has length 179 [2020-12-22 06:01:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:31,224 INFO L481 AbstractCegarLoop]: Abstraction has 66659 states and 117490 transitions. [2020-12-22 06:01:31,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 66659 states and 117490 transitions. [2020-12-22 06:01:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 06:01:31,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:31,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-12-22 06:01:31,436 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash 550841446, now seen corresponding path program 1 times [2020-12-22 06:01:31,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:31,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473521416] [2020-12-22 06:01:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:31,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473521416] [2020-12-22 06:01:31,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133889971] [2020-12-22 06:01:31,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:31,587 INFO L87 Difference]: Start difference. First operand 66659 states and 117490 transitions. Second operand 7 states. [2020-12-22 06:01:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:43,209 INFO L93 Difference]: Finished difference Result 223390 states and 404573 transitions. [2020-12-22 06:01:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:01:43,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-12-22 06:01:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:43,528 INFO L225 Difference]: With dead ends: 223390 [2020-12-22 06:01:43,529 INFO L226 Difference]: Without dead ends: 157193 [2020-12-22 06:01:43,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:01:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157193 states. [2020-12-22 06:01:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157193 to 66723. [2020-12-22 06:01:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66723 states. [2020-12-22 06:01:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66723 states to 66723 states and 117554 transitions. [2020-12-22 06:01:50,442 INFO L78 Accepts]: Start accepts. Automaton has 66723 states and 117554 transitions. Word has length 180 [2020-12-22 06:01:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:50,442 INFO L481 AbstractCegarLoop]: Abstraction has 66723 states and 117554 transitions. [2020-12-22 06:01:50,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 66723 states and 117554 transitions. [2020-12-22 06:01:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-22 06:01:50,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:50,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:50,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-12-22 06:01:50,456 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:50,457 INFO L82 PathProgramCache]: Analyzing trace with hash -240132423, now seen corresponding path program 1 times [2020-12-22 06:01:50,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:50,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874614993] [2020-12-22 06:01:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:50,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874614993] [2020-12-22 06:01:50,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:50,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:50,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870975602] [2020-12-22 06:01:50,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:50,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:50,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:50,594 INFO L87 Difference]: Start difference. First operand 66723 states and 117554 transitions. Second operand 7 states. [2020-12-22 06:02:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:13,930 INFO L93 Difference]: Finished difference Result 382121 states and 694561 transitions. [2020-12-22 06:02:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:02:13,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-12-22 06:02:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted.