/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/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:46:18,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:46:18,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:46:18,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:46:18,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:46:18,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:46:18,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:46:18,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:46:18,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:46:18,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:46:18,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:46:18,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:46:18,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:46:18,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:46:18,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:46:18,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:46:18,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:46:18,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:46:18,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:46:18,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:46:18,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:46:18,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:46:18,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:46:18,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:46:18,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 07:46:18,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 07:46:18,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 07:46:18,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 07:46:18,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 07:46:18,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 07:46:18,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:46:18,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:46:18,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:46:18,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:46:18,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:46:18,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:46:18,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:46:18,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:46:18,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:46:18,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:46:18,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:46:18,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:46:18,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:46:18,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:46:18,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:46:18,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:46:18,989 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:46:18,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:46:18,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:46:18,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:46:18,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:46:18,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:46:18,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:46:18,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:46:18,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:46:18,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:46:18,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:46:18,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:46:18,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:46:18,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:46:18,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:46:18,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:46:18,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:46:18,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:46:18,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:46:18,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:46:18,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:46:18,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:46:19,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:46:19,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:46:19,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:46:19,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:46:19,436 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:46:19,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:46:19,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722799747/4ae48c0c1d2b4ce79c652daede5d14ec/FLAG2848480b3 [2020-12-22 07:46:20,302 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:46:20,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:46:20,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722799747/4ae48c0c1d2b4ce79c652daede5d14ec/FLAG2848480b3 [2020-12-22 07:46:20,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/722799747/4ae48c0c1d2b4ce79c652daede5d14ec [2020-12-22 07:46:20,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:46:20,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:46:20,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:46:20,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:46:20,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:46:20,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:20" (1/1) ... [2020-12-22 07:46:20,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a365747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:20, skipping insertion in model container [2020-12-22 07:46:20,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:20" (1/1) ... [2020-12-22 07:46:20,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:46:20,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:46:21,263 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/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c[65469,65482] [2020-12-22 07:46:21,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:46:21,281 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:46:21,439 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/seq-mthreaded/pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c[65469,65482] [2020-12-22 07:46:21,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:46:21,480 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:46:21,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21 WrapperNode [2020-12-22 07:46:21,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:46:21,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:46:21,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:46:21,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:46:21,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:46:21,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:46:21,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:46:21,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:46:21,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (1/1) ... [2020-12-22 07:46:21,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:46:21,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:46:21,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:46:21,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:46:21,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (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 07:46:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:46:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:46:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:46:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:46:25,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:46:25,189 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:46:25,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:25 BoogieIcfgContainer [2020-12-22 07:46:25,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:46:25,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:46:25,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:46:25,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:46:25,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:46:20" (1/3) ... [2020-12-22 07:46:25,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:46:25, skipping insertion in model container [2020-12-22 07:46:25,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:21" (2/3) ... [2020-12-22 07:46:25,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:46:25, skipping insertion in model container [2020-12-22 07:46:25,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:25" (3/3) ... [2020-12-22 07:46:25,202 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:46:25,209 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:46:25,216 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:46:25,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:46:25,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:46:25,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:46:25,270 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:46:25,270 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:46:25,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:46:25,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:46:25,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:46:25,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:46:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states. [2020-12-22 07:46:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:46:25,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:25,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:25,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:25,352 INFO L82 PathProgramCache]: Analyzing trace with hash -388227635, now seen corresponding path program 1 times [2020-12-22 07:46:25,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:25,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390465766] [2020-12-22 07:46:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:26,119 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 07:46:26,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390465766] [2020-12-22 07:46:26,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:26,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:46:26,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169384673] [2020-12-22 07:46:26,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:46:26,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:46:26,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:46:26,147 INFO L87 Difference]: Start difference. First operand 736 states. Second operand 2 states. [2020-12-22 07:46:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:26,219 INFO L93 Difference]: Finished difference Result 922 states and 1680 transitions. [2020-12-22 07:46:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:46:26,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 153 [2020-12-22 07:46:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:26,257 INFO L225 Difference]: With dead ends: 922 [2020-12-22 07:46:26,258 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:46:26,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:46:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:46:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:46:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:46:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1351 transitions. [2020-12-22 07:46:26,387 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1351 transitions. Word has length 153 [2020-12-22 07:46:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:26,389 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1351 transitions. [2020-12-22 07:46:26,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:46:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1351 transitions. [2020-12-22 07:46:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:46:26,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:26,393 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, 1] [2020-12-22 07:46:26,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:46:26,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash -897700725, now seen corresponding path program 1 times [2020-12-22 07:46:26,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:26,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383861924] [2020-12-22 07:46:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:26,730 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 07:46:26,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383861924] [2020-12-22 07:46:26,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:26,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:46:26,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205717932] [2020-12-22 07:46:26,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:46:26,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:26,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:46:26,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:46:26,741 INFO L87 Difference]: Start difference. First operand 732 states and 1351 transitions. Second operand 5 states. [2020-12-22 07:46:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:27,119 INFO L93 Difference]: Finished difference Result 917 states and 1670 transitions. [2020-12-22 07:46:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:46:27,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:46:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:27,134 INFO L225 Difference]: With dead ends: 917 [2020-12-22 07:46:27,134 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:46:27,140 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 07:46:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:46:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:46:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:46:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1286 transitions. [2020-12-22 07:46:27,207 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1286 transitions. Word has length 153 [2020-12-22 07:46:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1286 transitions. [2020-12-22 07:46:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:46:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1286 transitions. [2020-12-22 07:46:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:46:27,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:27,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:27,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:46:27,219 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1598055145, now seen corresponding path program 1 times [2020-12-22 07:46:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:27,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728931328] [2020-12-22 07:46:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:27,576 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 07:46:27,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728931328] [2020-12-22 07:46:27,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:27,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:27,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926251600] [2020-12-22 07:46:27,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:27,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:27,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:27,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:27,586 INFO L87 Difference]: Start difference. First operand 732 states and 1286 transitions. Second operand 3 states. [2020-12-22 07:46:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:27,752 INFO L93 Difference]: Finished difference Result 1080 states and 1890 transitions. [2020-12-22 07:46:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:27,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 07:46:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:27,765 INFO L225 Difference]: With dead ends: 1080 [2020-12-22 07:46:27,766 INFO L226 Difference]: Without dead ends: 899 [2020-12-22 07:46:27,768 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 07:46:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-12-22 07:46:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2020-12-22 07:46:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-12-22 07:46:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1569 transitions. [2020-12-22 07:46:27,815 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1569 transitions. Word has length 217 [2020-12-22 07:46:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1569 transitions. [2020-12-22 07:46:27,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1569 transitions. [2020-12-22 07:46:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:46:27,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:27,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:27,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:46:27,832 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 741252945, now seen corresponding path program 1 times [2020-12-22 07:46:27,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:27,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904516251] [2020-12-22 07:46:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:28,152 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 07:46:28,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904516251] [2020-12-22 07:46:28,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:28,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:28,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960716721] [2020-12-22 07:46:28,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:28,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:28,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:28,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:28,158 INFO L87 Difference]: Start difference. First operand 897 states and 1569 transitions. Second operand 3 states. [2020-12-22 07:46:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:28,253 INFO L93 Difference]: Finished difference Result 1565 states and 2721 transitions. [2020-12-22 07:46:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:28,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 07:46:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:28,264 INFO L225 Difference]: With dead ends: 1565 [2020-12-22 07:46:28,265 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 07:46:28,267 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 07:46:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 07:46:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1217. [2020-12-22 07:46:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-12-22 07:46:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2120 transitions. [2020-12-22 07:46:28,340 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2120 transitions. Word has length 221 [2020-12-22 07:46:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:28,341 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 2120 transitions. [2020-12-22 07:46:28,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2120 transitions. [2020-12-22 07:46:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 07:46:28,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:28,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:28,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:46:28,348 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:28,349 INFO L82 PathProgramCache]: Analyzing trace with hash -674300039, now seen corresponding path program 1 times [2020-12-22 07:46:28,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:28,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368260000] [2020-12-22 07:46:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:28,758 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 07:46:28,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368260000] [2020-12-22 07:46:28,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:28,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:28,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044347529] [2020-12-22 07:46:28,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:28,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:28,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:28,762 INFO L87 Difference]: Start difference. First operand 1217 states and 2120 transitions. Second operand 3 states. [2020-12-22 07:46:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:28,852 INFO L93 Difference]: Finished difference Result 2501 states and 4330 transitions. [2020-12-22 07:46:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:28,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 07:46:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:28,868 INFO L225 Difference]: With dead ends: 2501 [2020-12-22 07:46:28,868 INFO L226 Difference]: Without dead ends: 1835 [2020-12-22 07:46:28,870 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 07:46:28,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-12-22 07:46:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2020-12-22 07:46:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-12-22 07:46:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3176 transitions. [2020-12-22 07:46:28,938 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3176 transitions. Word has length 225 [2020-12-22 07:46:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:28,939 INFO L481 AbstractCegarLoop]: Abstraction has 1833 states and 3176 transitions. [2020-12-22 07:46:28,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3176 transitions. [2020-12-22 07:46:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 07:46:28,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:28,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:28,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:46:28,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1433109345, now seen corresponding path program 1 times [2020-12-22 07:46:28,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:28,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27937552] [2020-12-22 07:46:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:29,284 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 07:46:29,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27937552] [2020-12-22 07:46:29,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:29,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:29,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050526535] [2020-12-22 07:46:29,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:29,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:29,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:29,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:29,287 INFO L87 Difference]: Start difference. First operand 1833 states and 3176 transitions. Second operand 3 states. [2020-12-22 07:46:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:29,376 INFO L93 Difference]: Finished difference Result 4301 states and 7410 transitions. [2020-12-22 07:46:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:29,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 07:46:29,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:29,397 INFO L225 Difference]: With dead ends: 4301 [2020-12-22 07:46:29,397 INFO L226 Difference]: Without dead ends: 3019 [2020-12-22 07:46:29,401 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 07:46:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-12-22 07:46:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3017. [2020-12-22 07:46:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-12-22 07:46:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5196 transitions. [2020-12-22 07:46:29,503 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5196 transitions. Word has length 229 [2020-12-22 07:46:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:29,504 INFO L481 AbstractCegarLoop]: Abstraction has 3017 states and 5196 transitions. [2020-12-22 07:46:29,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5196 transitions. [2020-12-22 07:46:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 07:46:29,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:29,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:29,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:46:29,512 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:29,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash 792603401, now seen corresponding path program 1 times [2020-12-22 07:46:29,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:29,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455740212] [2020-12-22 07:46:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:29,785 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 07:46:29,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455740212] [2020-12-22 07:46:29,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:29,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:29,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651888309] [2020-12-22 07:46:29,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:29,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:29,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:29,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:29,789 INFO L87 Difference]: Start difference. First operand 3017 states and 5196 transitions. Second operand 3 states. [2020-12-22 07:46:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:29,908 INFO L93 Difference]: Finished difference Result 7757 states and 13294 transitions. [2020-12-22 07:46:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:29,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 07:46:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:29,941 INFO L225 Difference]: With dead ends: 7757 [2020-12-22 07:46:29,941 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 07:46:29,949 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 07:46:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 07:46:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5289. [2020-12-22 07:46:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-12-22 07:46:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 9052 transitions. [2020-12-22 07:46:30,132 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 9052 transitions. Word has length 233 [2020-12-22 07:46:30,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:30,133 INFO L481 AbstractCegarLoop]: Abstraction has 5289 states and 9052 transitions. [2020-12-22 07:46:30,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 9052 transitions. [2020-12-22 07:46:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 07:46:30,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:30,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:30,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:46:30,142 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:30,142 INFO L82 PathProgramCache]: Analyzing trace with hash 108066417, now seen corresponding path program 1 times [2020-12-22 07:46:30,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:30,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285369633] [2020-12-22 07:46:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:30,645 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 07:46:30,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285369633] [2020-12-22 07:46:30,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:30,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:46:30,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305504763] [2020-12-22 07:46:30,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:46:30,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:30,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:46:30,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:46:30,648 INFO L87 Difference]: Start difference. First operand 5289 states and 9052 transitions. Second operand 7 states. [2020-12-22 07:46:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:31,914 INFO L93 Difference]: Finished difference Result 29643 states and 50837 transitions. [2020-12-22 07:46:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:46:31,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 07:46:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:32,026 INFO L225 Difference]: With dead ends: 29643 [2020-12-22 07:46:32,026 INFO L226 Difference]: Without dead ends: 24905 [2020-12-22 07:46:32,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:46:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24905 states. [2020-12-22 07:46:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24905 to 12197. [2020-12-22 07:46:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12197 states. [2020-12-22 07:46:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 20884 transitions. [2020-12-22 07:46:32,747 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 20884 transitions. Word has length 237 [2020-12-22 07:46:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:32,832 INFO L481 AbstractCegarLoop]: Abstraction has 12197 states and 20884 transitions. [2020-12-22 07:46:32,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:46:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 20884 transitions. [2020-12-22 07:46:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 07:46:32,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:32,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:32,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:46:32,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:32,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1083679653, now seen corresponding path program 1 times [2020-12-22 07:46:32,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:32,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932906828] [2020-12-22 07:46:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:33,100 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 07:46:33,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932906828] [2020-12-22 07:46:33,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:33,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:33,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412337133] [2020-12-22 07:46:33,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:33,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:33,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:33,109 INFO L87 Difference]: Start difference. First operand 12197 states and 20884 transitions. Second operand 4 states. [2020-12-22 07:46:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:33,583 INFO L93 Difference]: Finished difference Result 28676 states and 49121 transitions. [2020-12-22 07:46:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:33,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 07:46:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:33,627 INFO L225 Difference]: With dead ends: 28676 [2020-12-22 07:46:33,628 INFO L226 Difference]: Without dead ends: 17030 [2020-12-22 07:46:33,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17030 states. [2020-12-22 07:46:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17030 to 16995. [2020-12-22 07:46:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16995 states. [2020-12-22 07:46:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16995 states to 16995 states and 29082 transitions. [2020-12-22 07:46:34,268 INFO L78 Accepts]: Start accepts. Automaton has 16995 states and 29082 transitions. Word has length 238 [2020-12-22 07:46:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:34,269 INFO L481 AbstractCegarLoop]: Abstraction has 16995 states and 29082 transitions. [2020-12-22 07:46:34,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16995 states and 29082 transitions. [2020-12-22 07:46:34,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:34,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:34,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:34,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:46:34,283 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash 786829641, now seen corresponding path program 1 times [2020-12-22 07:46:34,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:34,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626558203] [2020-12-22 07:46:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:34,548 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 07:46:34,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626558203] [2020-12-22 07:46:34,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:34,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:34,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384565255] [2020-12-22 07:46:34,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:34,552 INFO L87 Difference]: Start difference. First operand 16995 states and 29082 transitions. Second operand 3 states. [2020-12-22 07:46:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:34,987 INFO L93 Difference]: Finished difference Result 38906 states and 66693 transitions. [2020-12-22 07:46:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:34,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:35,053 INFO L225 Difference]: With dead ends: 38906 [2020-12-22 07:46:35,054 INFO L226 Difference]: Without dead ends: 26797 [2020-12-22 07:46:35,080 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 07:46:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26797 states. [2020-12-22 07:46:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26797 to 26795. [2020-12-22 07:46:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26795 states. [2020-12-22 07:46:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26795 states to 26795 states and 45773 transitions. [2020-12-22 07:46:36,041 INFO L78 Accepts]: Start accepts. Automaton has 26795 states and 45773 transitions. Word has length 239 [2020-12-22 07:46:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:36,042 INFO L481 AbstractCegarLoop]: Abstraction has 26795 states and 45773 transitions. [2020-12-22 07:46:36,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26795 states and 45773 transitions. [2020-12-22 07:46:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:36,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:36,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:36,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:46:36,050 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:36,051 INFO L82 PathProgramCache]: Analyzing trace with hash -259310295, now seen corresponding path program 1 times [2020-12-22 07:46:36,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:36,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869680971] [2020-12-22 07:46:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:36,414 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 07:46:36,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869680971] [2020-12-22 07:46:36,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:36,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:36,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133093907] [2020-12-22 07:46:36,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:36,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:36,417 INFO L87 Difference]: Start difference. First operand 26795 states and 45773 transitions. Second operand 3 states. [2020-12-22 07:46:37,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:37,153 INFO L93 Difference]: Finished difference Result 51907 states and 88688 transitions. [2020-12-22 07:46:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:37,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:37,277 INFO L225 Difference]: With dead ends: 51907 [2020-12-22 07:46:37,277 INFO L226 Difference]: Without dead ends: 37921 [2020-12-22 07:46:37,306 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 07:46:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2020-12-22 07:46:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37919. [2020-12-22 07:46:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37919 states. [2020-12-22 07:46:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37919 states to 37919 states and 64605 transitions. [2020-12-22 07:46:38,548 INFO L78 Accepts]: Start accepts. Automaton has 37919 states and 64605 transitions. Word has length 239 [2020-12-22 07:46:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:38,549 INFO L481 AbstractCegarLoop]: Abstraction has 37919 states and 64605 transitions. [2020-12-22 07:46:38,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 37919 states and 64605 transitions. [2020-12-22 07:46:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:38,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:38,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:38,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:46:38,556 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:38,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:38,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219721, now seen corresponding path program 1 times [2020-12-22 07:46:38,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:38,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701085374] [2020-12-22 07:46:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:38,972 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 07:46:38,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701085374] [2020-12-22 07:46:38,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:38,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865165730] [2020-12-22 07:46:38,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:38,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:38,975 INFO L87 Difference]: Start difference. First operand 37919 states and 64605 transitions. Second operand 3 states. [2020-12-22 07:46:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:39,790 INFO L93 Difference]: Finished difference Result 73271 states and 124880 transitions. [2020-12-22 07:46:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:39,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:39,947 INFO L225 Difference]: With dead ends: 73271 [2020-12-22 07:46:39,948 INFO L226 Difference]: Without dead ends: 53445 [2020-12-22 07:46:40,110 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 07:46:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53445 states. [2020-12-22 07:46:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53445 to 53443. [2020-12-22 07:46:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53443 states. [2020-12-22 07:46:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53443 states to 53443 states and 90797 transitions. [2020-12-22 07:46:41,795 INFO L78 Accepts]: Start accepts. Automaton has 53443 states and 90797 transitions. Word has length 239 [2020-12-22 07:46:41,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:41,795 INFO L481 AbstractCegarLoop]: Abstraction has 53443 states and 90797 transitions. [2020-12-22 07:46:41,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 53443 states and 90797 transitions. [2020-12-22 07:46:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:41,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:41,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:41,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:46:41,801 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash 583218409, now seen corresponding path program 1 times [2020-12-22 07:46:41,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:41,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900270879] [2020-12-22 07:46:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:42,269 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 07:46:42,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900270879] [2020-12-22 07:46:42,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:42,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:42,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932643904] [2020-12-22 07:46:42,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:42,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:42,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:42,273 INFO L87 Difference]: Start difference. First operand 53443 states and 90797 transitions. Second operand 3 states. [2020-12-22 07:46:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:43,551 INFO L93 Difference]: Finished difference Result 103003 states and 175072 transitions. [2020-12-22 07:46:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:43,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:43,738 INFO L225 Difference]: With dead ends: 103003 [2020-12-22 07:46:43,739 INFO L226 Difference]: Without dead ends: 74993 [2020-12-22 07:46:43,792 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 07:46:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74993 states. [2020-12-22 07:46:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74993 to 74991. [2020-12-22 07:46:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74991 states. [2020-12-22 07:46:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74991 states to 74991 states and 127009 transitions. [2020-12-22 07:46:45,621 INFO L78 Accepts]: Start accepts. Automaton has 74991 states and 127009 transitions. Word has length 239 [2020-12-22 07:46:45,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:45,622 INFO L481 AbstractCegarLoop]: Abstraction has 74991 states and 127009 transitions. [2020-12-22 07:46:45,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 74991 states and 127009 transitions. [2020-12-22 07:46:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:45,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:45,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:45,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:46:45,628 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1125515465, now seen corresponding path program 1 times [2020-12-22 07:46:45,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:45,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301664911] [2020-12-22 07:46:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:46,135 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 07:46:46,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301664911] [2020-12-22 07:46:46,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:46,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:46,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725261634] [2020-12-22 07:46:46,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:46,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:46,138 INFO L87 Difference]: Start difference. First operand 74991 states and 127009 transitions. Second operand 3 states. [2020-12-22 07:46:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:47,706 INFO L93 Difference]: Finished difference Result 144135 states and 244224 transitions. [2020-12-22 07:46:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:47,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:47,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:47,929 INFO L225 Difference]: With dead ends: 144135 [2020-12-22 07:46:47,929 INFO L226 Difference]: Without dead ends: 104713 [2020-12-22 07:46:47,981 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 07:46:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104713 states. [2020-12-22 07:46:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104713 to 104711. [2020-12-22 07:46:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104711 states. [2020-12-22 07:46:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104711 states to 104711 states and 176721 transitions. [2020-12-22 07:46:50,562 INFO L78 Accepts]: Start accepts. Automaton has 104711 states and 176721 transitions. Word has length 239 [2020-12-22 07:46:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:50,563 INFO L481 AbstractCegarLoop]: Abstraction has 104711 states and 176721 transitions. [2020-12-22 07:46:50,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 104711 states and 176721 transitions. [2020-12-22 07:46:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:50,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:50,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:50,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:46:50,566 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:50,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1431923240, now seen corresponding path program 1 times [2020-12-22 07:46:50,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:50,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127689732] [2020-12-22 07:46:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:46:51,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127689732] [2020-12-22 07:46:51,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:51,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:51,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292535266] [2020-12-22 07:46:51,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:51,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:51,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:51,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:51,099 INFO L87 Difference]: Start difference. First operand 104711 states and 176721 transitions. Second operand 4 states. [2020-12-22 07:46:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:54,725 INFO L93 Difference]: Finished difference Result 345911 states and 584173 transitions. [2020-12-22 07:46:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:54,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 07:46:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:55,812 INFO L225 Difference]: With dead ends: 345911 [2020-12-22 07:46:55,812 INFO L226 Difference]: Without dead ends: 241833 [2020-12-22 07:46:55,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241833 states. [2020-12-22 07:47:00,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241833 to 172390. [2020-12-22 07:47:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172390 states. [2020-12-22 07:47:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172390 states to 172390 states and 290100 transitions. [2020-12-22 07:47:00,651 INFO L78 Accepts]: Start accepts. Automaton has 172390 states and 290100 transitions. Word has length 239 [2020-12-22 07:47:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:00,651 INFO L481 AbstractCegarLoop]: Abstraction has 172390 states and 290100 transitions. [2020-12-22 07:47:00,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 172390 states and 290100 transitions. [2020-12-22 07:47:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 07:47:00,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:00,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:00,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:47:00,654 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash -488423108, now seen corresponding path program 1 times [2020-12-22 07:47:00,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:00,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51305674] [2020-12-22 07:47:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:00,875 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 07:47:00,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51305674] [2020-12-22 07:47:00,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:00,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:00,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234641207] [2020-12-22 07:47:00,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:00,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:00,877 INFO L87 Difference]: Start difference. First operand 172390 states and 290100 transitions. Second operand 4 states. [2020-12-22 07:47:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:07,102 INFO L93 Difference]: Finished difference Result 569959 states and 959793 transitions. [2020-12-22 07:47:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:47:07,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 07:47:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:08,298 INFO L225 Difference]: With dead ends: 569959 [2020-12-22 07:47:08,299 INFO L226 Difference]: Without dead ends: 398202 [2020-12-22 07:47:08,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398202 states. [2020-12-22 07:47:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398202 to 283121. [2020-12-22 07:47:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283121 states. [2020-12-22 07:47:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283121 states to 283121 states and 475063 transitions. [2020-12-22 07:47:16,365 INFO L78 Accepts]: Start accepts. Automaton has 283121 states and 475063 transitions. Word has length 240 [2020-12-22 07:47:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:16,365 INFO L481 AbstractCegarLoop]: Abstraction has 283121 states and 475063 transitions. [2020-12-22 07:47:16,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 283121 states and 475063 transitions. [2020-12-22 07:47:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:47:16,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:16,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:16,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:47:16,367 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 279386591, now seen corresponding path program 1 times [2020-12-22 07:47:16,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:16,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879241815] [2020-12-22 07:47:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:17,147 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 07:47:17,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879241815] [2020-12-22 07:47:17,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:17,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:17,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305218989] [2020-12-22 07:47:17,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:17,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:17,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:17,151 INFO L87 Difference]: Start difference. First operand 283121 states and 475063 transitions. Second operand 4 states. [2020-12-22 07:47:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:27,420 INFO L93 Difference]: Finished difference Result 935615 states and 1571029 transitions. [2020-12-22 07:47:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:47:27,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-12-22 07:47:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:28,983 INFO L225 Difference]: With dead ends: 935615 [2020-12-22 07:47:28,983 INFO L226 Difference]: Without dead ends: 653127 [2020-12-22 07:47:29,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653127 states. [2020-12-22 07:47:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653127 to 462428. [2020-12-22 07:47:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462428 states. [2020-12-22 07:47:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462428 states to 462428 states and 773710 transitions. [2020-12-22 07:47:46,897 INFO L78 Accepts]: Start accepts. Automaton has 462428 states and 773710 transitions. Word has length 241 [2020-12-22 07:47:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:46,898 INFO L481 AbstractCegarLoop]: Abstraction has 462428 states and 773710 transitions. [2020-12-22 07:47:46,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 462428 states and 773710 transitions. [2020-12-22 07:47:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 07:47:46,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:46,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:46,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:47:46,919 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:46,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1519312173, now seen corresponding path program 1 times [2020-12-22 07:47:46,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:46,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176475368] [2020-12-22 07:47:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:47,309 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 07:47:47,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176475368] [2020-12-22 07:47:47,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:47,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:47,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307637958] [2020-12-22 07:47:47,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:47,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:47,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:47,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:47,313 INFO L87 Difference]: Start difference. First operand 462428 states and 773710 transitions. Second operand 4 states. [2020-12-22 07:48:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:48:05,143 INFO L93 Difference]: Finished difference Result 1496619 states and 2506113 transitions. [2020-12-22 07:48:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:48:05,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-12-22 07:48:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:48:07,882 INFO L225 Difference]: With dead ends: 1496619 [2020-12-22 07:48:07,883 INFO L226 Difference]: Without dead ends: 1034824 [2020-12-22 07:48:08,376 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 07:48:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034824 states. [2020-12-22 07:48:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034824 to 747259. [2020-12-22 07:48:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747259 states. [2020-12-22 07:48:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747259 states to 747259 states and 1246781 transitions. [2020-12-22 07:48:37,806 INFO L78 Accepts]: Start accepts. Automaton has 747259 states and 1246781 transitions. Word has length 242 [2020-12-22 07:48:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:48:37,807 INFO L481 AbstractCegarLoop]: Abstraction has 747259 states and 1246781 transitions. [2020-12-22 07:48:37,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:48:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 747259 states and 1246781 transitions. [2020-12-22 07:48:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 07:48:37,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:48:37,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:37,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:48:37,823 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:48:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:48:37,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2074853333, now seen corresponding path program 1 times [2020-12-22 07:48:37,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:48:37,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649044333] [2020-12-22 07:48:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:48:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:48:38,368 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 07:48:38,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649044333] [2020-12-22 07:48:38,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:48:38,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:48:38,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761816515] [2020-12-22 07:48:38,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:48:38,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:48:38,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:48:38,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:48:38,370 INFO L87 Difference]: Start difference. First operand 747259 states and 1246781 transitions. Second operand 7 states. [2020-12-22 07:48:38,643 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-22 07:48:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:48:58,638 INFO L93 Difference]: Finished difference Result 1493889 states and 2492463 transitions. [2020-12-22 07:48:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:48:58,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-12-22 07:48:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:49:00,633 INFO L225 Difference]: With dead ends: 1493889 [2020-12-22 07:49:00,633 INFO L226 Difference]: Without dead ends: 747263 [2020-12-22 07:49:01,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:49:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747263 states.