/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:47:39,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:47:39,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:47:40,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:47:40,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:47:40,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:47:40,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:47:40,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:47:40,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:47:40,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:47:40,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:47:40,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:47:40,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:47:40,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:47:40,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:47:40,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:47:40,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:47:40,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:47:40,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:47:40,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:47:40,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:47:40,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:47:40,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:47:40,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:47:40,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:47:40,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:47:40,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:47:40,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:47:40,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:47:40,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:47:40,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:47:40,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:47:40,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:47:40,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:47:40,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:47:40,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:47:40,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:47:40,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:47:40,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:47:40,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:47:40,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:47:40,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:47:40,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:47:40,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:47:40,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:47:40,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:47:40,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:47:40,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:47:40,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:47:40,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:47:40,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:47:40,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:47:40,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:47:40,115 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:47:40,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:47:40,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:47:40,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:47:40,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:47:40,118 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:47:40,118 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:47:40,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:47:40,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:47:40,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:47:40,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:47:40,340 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:47:40,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:47:40,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dada4f820/e7c4c2b3235d478093803885159d69ab/FLAGf15545325 [2022-01-10 18:47:40,721 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:47:40,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:47:40,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dada4f820/e7c4c2b3235d478093803885159d69ab/FLAGf15545325 [2022-01-10 18:47:41,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dada4f820/e7c4c2b3235d478093803885159d69ab [2022-01-10 18:47:41,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:47:41,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:47:41,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:47:41,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:47:41,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:47:41,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6143193a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41, skipping insertion in model container [2022-01-10 18:47:41,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:47:41,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:47:41,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2022-01-10 18:47:41,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:47:41,412 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:47:41,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2022-01-10 18:47:41,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:47:41,484 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:47:41,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41 WrapperNode [2022-01-10 18:47:41,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:47:41,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:47:41,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:47:41,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:47:41,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,547 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 575 [2022-01-10 18:47:41,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:47:41,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:47:41,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:47:41,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:47:41,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:47:41,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:47:41,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:47:41,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:47:41,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 18:47:41,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:47:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:47:41,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:47:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:47:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:47:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:47:41,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:47:41,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:47:41,757 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:47:41,758 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:47:42,128 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:47:42,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:47:42,133 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:47:42,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:42 BoogieIcfgContainer [2022-01-10 18:47:42,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:47:42,135 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:47:42,135 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:47:42,136 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:47:42,138 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:42" (1/1) ... [2022-01-10 18:47:42,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:47:42 BasicIcfg [2022-01-10 18:47:42,362 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:47:42,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:47:42,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:47:42,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:47:42,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:47:41" (1/4) ... [2022-01-10 18:47:42,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be39d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:42, skipping insertion in model container [2022-01-10 18:47:42,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (2/4) ... [2022-01-10 18:47:42,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be39d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:42, skipping insertion in model container [2022-01-10 18:47:42,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:42" (3/4) ... [2022-01-10 18:47:42,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be39d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:47:42, skipping insertion in model container [2022-01-10 18:47:42,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:47:42" (4/4) ... [2022-01-10 18:47:42,369 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:47:42,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:47:42,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:47:42,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:47:42,418 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:47:42,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:47:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 139 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:47:42,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:42,433 INFO L514 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] [2022-01-10 18:47:42,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1759176982, now seen corresponding path program 1 times [2022-01-10 18:47:42,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638461295] [2022-01-10 18:47:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:42,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:42,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:42,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638461295] [2022-01-10 18:47:42,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638461295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:42,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:42,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:42,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306522223] [2022-01-10 18:47:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:42,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:42,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:42,921 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 139 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:43,018 INFO L93 Difference]: Finished difference Result 303 states and 512 transitions. [2022-01-10 18:47:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 18:47:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:43,030 INFO L225 Difference]: With dead ends: 303 [2022-01-10 18:47:43,030 INFO L226 Difference]: Without dead ends: 211 [2022-01-10 18:47:43,032 INFO L932 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 [2022-01-10 18:47:43,034 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 138 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:43,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 419 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:47:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-01-10 18:47:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-01-10 18:47:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5797101449275361) internal successors, (327), 207 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 327 transitions. [2022-01-10 18:47:43,067 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 327 transitions. Word has length 56 [2022-01-10 18:47:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:43,067 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 327 transitions. [2022-01-10 18:47:43,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 327 transitions. [2022-01-10 18:47:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:47:43,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:43,070 INFO L514 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] [2022-01-10 18:47:43,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:47:43,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -350815428, now seen corresponding path program 1 times [2022-01-10 18:47:43,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267195544] [2022-01-10 18:47:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:43,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:43,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:43,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267195544] [2022-01-10 18:47:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267195544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:43,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:43,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:43,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957791767] [2022-01-10 18:47:43,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:43,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:43,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:43,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:43,198 INFO L87 Difference]: Start difference. First operand 208 states and 327 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:43,281 INFO L93 Difference]: Finished difference Result 583 states and 912 transitions. [2022-01-10 18:47:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:47:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:43,286 INFO L225 Difference]: With dead ends: 583 [2022-01-10 18:47:43,286 INFO L226 Difference]: Without dead ends: 400 [2022-01-10 18:47:43,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:43,292 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 464 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:43,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-10 18:47:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2022-01-10 18:47:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.566750629722922) internal successors, (622), 397 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 622 transitions. [2022-01-10 18:47:43,329 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 622 transitions. Word has length 58 [2022-01-10 18:47:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:43,330 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 622 transitions. [2022-01-10 18:47:43,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 622 transitions. [2022-01-10 18:47:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:47:43,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:43,337 INFO L514 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] [2022-01-10 18:47:43,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:47:43,339 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1550052374, now seen corresponding path program 1 times [2022-01-10 18:47:43,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:43,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298986532] [2022-01-10 18:47:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:43,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:43,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:43,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298986532] [2022-01-10 18:47:43,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298986532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:43,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:43,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:43,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820581906] [2022-01-10 18:47:43,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:43,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:43,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:43,407 INFO L87 Difference]: Start difference. First operand 398 states and 622 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:43,435 INFO L93 Difference]: Finished difference Result 1156 states and 1802 transitions. [2022-01-10 18:47:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:43,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:47:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:43,438 INFO L225 Difference]: With dead ends: 1156 [2022-01-10 18:47:43,439 INFO L226 Difference]: Without dead ends: 786 [2022-01-10 18:47:43,441 INFO L932 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 [2022-01-10 18:47:43,445 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 201 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:43,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 613 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-01-10 18:47:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 400. [2022-01-10 18:47:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.5639097744360901) internal successors, (624), 399 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 624 transitions. [2022-01-10 18:47:43,469 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 624 transitions. Word has length 59 [2022-01-10 18:47:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:43,470 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 624 transitions. [2022-01-10 18:47:43,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 624 transitions. [2022-01-10 18:47:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:47:43,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:43,471 INFO L514 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] [2022-01-10 18:47:43,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:47:43,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash 698178371, now seen corresponding path program 1 times [2022-01-10 18:47:43,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:43,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197811287] [2022-01-10 18:47:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:43,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:43,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:43,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197811287] [2022-01-10 18:47:43,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197811287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:43,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:43,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:43,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260608381] [2022-01-10 18:47:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:43,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:43,532 INFO L87 Difference]: Start difference. First operand 400 states and 624 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:43,585 INFO L93 Difference]: Finished difference Result 684 states and 1105 transitions. [2022-01-10 18:47:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:47:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:43,588 INFO L225 Difference]: With dead ends: 684 [2022-01-10 18:47:43,588 INFO L226 Difference]: Without dead ends: 523 [2022-01-10 18:47:43,588 INFO L932 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 [2022-01-10 18:47:43,593 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:43,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 490 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-10 18:47:43,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 521. [2022-01-10 18:47:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.5942307692307693) internal successors, (829), 520 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 829 transitions. [2022-01-10 18:47:43,615 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 829 transitions. Word has length 60 [2022-01-10 18:47:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 829 transitions. [2022-01-10 18:47:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 829 transitions. [2022-01-10 18:47:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:47:43,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:43,619 INFO L514 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] [2022-01-10 18:47:43,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:47:43,619 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash -852493033, now seen corresponding path program 1 times [2022-01-10 18:47:43,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571688850] [2022-01-10 18:47:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:43,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:43,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571688850] [2022-01-10 18:47:43,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571688850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:43,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:43,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:47:43,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083812529] [2022-01-10 18:47:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:43,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:47:43,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:47:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:43,730 INFO L87 Difference]: Start difference. First operand 521 states and 829 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:43,851 INFO L93 Difference]: Finished difference Result 2006 states and 3190 transitions. [2022-01-10 18:47:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:47:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:47:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:43,857 INFO L225 Difference]: With dead ends: 2006 [2022-01-10 18:47:43,857 INFO L226 Difference]: Without dead ends: 1497 [2022-01-10 18:47:43,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:47:43,858 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 622 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:43,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 891 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-01-10 18:47:43,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1004. [2022-01-10 18:47:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 1.5812562313060818) internal successors, (1586), 1003 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1586 transitions. [2022-01-10 18:47:43,940 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1586 transitions. Word has length 60 [2022-01-10 18:47:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:43,941 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1586 transitions. [2022-01-10 18:47:43,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1586 transitions. [2022-01-10 18:47:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:47:43,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:43,949 INFO L514 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] [2022-01-10 18:47:43,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:47:43,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 782939259, now seen corresponding path program 1 times [2022-01-10 18:47:43,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119023701] [2022-01-10 18:47:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:43,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:44,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:44,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119023701] [2022-01-10 18:47:44,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119023701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:44,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:44,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:44,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072348019] [2022-01-10 18:47:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:44,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:44,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:44,016 INFO L87 Difference]: Start difference. First operand 1004 states and 1586 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:44,078 INFO L93 Difference]: Finished difference Result 1753 states and 2763 transitions. [2022-01-10 18:47:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:47:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:44,082 INFO L225 Difference]: With dead ends: 1753 [2022-01-10 18:47:44,082 INFO L226 Difference]: Without dead ends: 765 [2022-01-10 18:47:44,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:44,084 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 69 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:44,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 671 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-10 18:47:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2022-01-10 18:47:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.5719895287958114) internal successors, (1201), 764 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1201 transitions. [2022-01-10 18:47:44,132 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1201 transitions. Word has length 60 [2022-01-10 18:47:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:44,132 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1201 transitions. [2022-01-10 18:47:44,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1201 transitions. [2022-01-10 18:47:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:47:44,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:44,133 INFO L514 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] [2022-01-10 18:47:44,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:47:44,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash -454976374, now seen corresponding path program 1 times [2022-01-10 18:47:44,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:44,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940791521] [2022-01-10 18:47:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:44,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:44,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940791521] [2022-01-10 18:47:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940791521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:44,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:44,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905426991] [2022-01-10 18:47:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:44,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:44,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:44,177 INFO L87 Difference]: Start difference. First operand 765 states and 1201 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:44,252 INFO L93 Difference]: Finished difference Result 1508 states and 2361 transitions. [2022-01-10 18:47:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:44,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:47:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:44,256 INFO L225 Difference]: With dead ends: 1508 [2022-01-10 18:47:44,256 INFO L226 Difference]: Without dead ends: 1009 [2022-01-10 18:47:44,257 INFO L932 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 [2022-01-10 18:47:44,258 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 198 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:44,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 423 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-01-10 18:47:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 765. [2022-01-10 18:47:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.5706806282722514) internal successors, (1200), 764 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1200 transitions. [2022-01-10 18:47:44,308 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1200 transitions. Word has length 62 [2022-01-10 18:47:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:44,309 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1200 transitions. [2022-01-10 18:47:44,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1200 transitions. [2022-01-10 18:47:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:47:44,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:44,310 INFO L514 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] [2022-01-10 18:47:44,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:47:44,310 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1486163113, now seen corresponding path program 1 times [2022-01-10 18:47:44,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:44,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951070219] [2022-01-10 18:47:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:44,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:44,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:44,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951070219] [2022-01-10 18:47:44,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951070219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:44,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:44,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:44,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7732583] [2022-01-10 18:47:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:44,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:44,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:44,366 INFO L87 Difference]: Start difference. First operand 765 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:44,472 INFO L93 Difference]: Finished difference Result 2239 states and 3515 transitions. [2022-01-10 18:47:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:47:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:44,477 INFO L225 Difference]: With dead ends: 2239 [2022-01-10 18:47:44,477 INFO L226 Difference]: Without dead ends: 1504 [2022-01-10 18:47:44,478 INFO L932 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 [2022-01-10 18:47:44,479 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 394 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:44,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 574 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-01-10 18:47:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 774. [2022-01-10 18:47:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 1.5653298835705045) internal successors, (1210), 773 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1210 transitions. [2022-01-10 18:47:44,533 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1210 transitions. Word has length 63 [2022-01-10 18:47:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:44,533 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1210 transitions. [2022-01-10 18:47:44,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1210 transitions. [2022-01-10 18:47:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:47:44,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:44,534 INFO L514 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] [2022-01-10 18:47:44,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:47:44,534 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 855704488, now seen corresponding path program 1 times [2022-01-10 18:47:44,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050061925] [2022-01-10 18:47:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:44,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:44,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:44,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050061925] [2022-01-10 18:47:44,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050061925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:44,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:44,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:44,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779412607] [2022-01-10 18:47:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:44,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:44,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:44,643 INFO L87 Difference]: Start difference. First operand 774 states and 1210 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:44,768 INFO L93 Difference]: Finished difference Result 1946 states and 3137 transitions. [2022-01-10 18:47:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:47:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:44,773 INFO L225 Difference]: With dead ends: 1946 [2022-01-10 18:47:44,773 INFO L226 Difference]: Without dead ends: 1330 [2022-01-10 18:47:44,774 INFO L932 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 [2022-01-10 18:47:44,775 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 115 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:44,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-01-10 18:47:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1319. [2022-01-10 18:47:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.5880121396054627) internal successors, (2093), 1318 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2093 transitions. [2022-01-10 18:47:44,877 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2093 transitions. Word has length 63 [2022-01-10 18:47:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:44,878 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2093 transitions. [2022-01-10 18:47:44,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:44,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2093 transitions. [2022-01-10 18:47:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:47:44,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:44,884 INFO L514 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] [2022-01-10 18:47:44,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:47:44,887 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:44,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1786863710, now seen corresponding path program 1 times [2022-01-10 18:47:44,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:44,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823108741] [2022-01-10 18:47:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:44,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:44,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:44,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823108741] [2022-01-10 18:47:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823108741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:44,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:44,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:44,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708664124] [2022-01-10 18:47:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:44,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:44,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:44,974 INFO L87 Difference]: Start difference. First operand 1319 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:45,143 INFO L93 Difference]: Finished difference Result 3631 states and 5839 transitions. [2022-01-10 18:47:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:47:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:45,151 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 18:47:45,151 INFO L226 Difference]: Without dead ends: 2470 [2022-01-10 18:47:45,153 INFO L932 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 [2022-01-10 18:47:45,153 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 145 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:45,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 567 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-01-10 18:47:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2022-01-10 18:47:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5820835022294284) internal successors, (3903), 2467 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3903 transitions. [2022-01-10 18:47:45,338 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3903 transitions. Word has length 65 [2022-01-10 18:47:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:45,339 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3903 transitions. [2022-01-10 18:47:45,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3903 transitions. [2022-01-10 18:47:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:47:45,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:45,340 INFO L514 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] [2022-01-10 18:47:45,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:47:45,340 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -231611714, now seen corresponding path program 1 times [2022-01-10 18:47:45,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:45,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944588977] [2022-01-10 18:47:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:45,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:45,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:45,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944588977] [2022-01-10 18:47:45,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944588977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:45,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:45,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:45,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310414865] [2022-01-10 18:47:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:45,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:45,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:45,435 INFO L87 Difference]: Start difference. First operand 2468 states and 3903 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:45,851 INFO L93 Difference]: Finished difference Result 7106 states and 11270 transitions. [2022-01-10 18:47:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:47:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:45,865 INFO L225 Difference]: With dead ends: 7106 [2022-01-10 18:47:45,865 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 18:47:45,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:45,868 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 439 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:45,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 465 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 18:47:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4704. [2022-01-10 18:47:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4703 states have (on average 1.5772910907931108) internal successors, (7418), 4703 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7418 transitions. [2022-01-10 18:47:46,220 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7418 transitions. Word has length 65 [2022-01-10 18:47:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:46,220 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 7418 transitions. [2022-01-10 18:47:46,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7418 transitions. [2022-01-10 18:47:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:47:46,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:46,222 INFO L514 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] [2022-01-10 18:47:46,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:47:46,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1245473408, now seen corresponding path program 1 times [2022-01-10 18:47:46,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:46,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887435773] [2022-01-10 18:47:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:46,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:46,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887435773] [2022-01-10 18:47:46,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887435773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:46,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:46,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:46,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647159954] [2022-01-10 18:47:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:46,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:46,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:46,278 INFO L87 Difference]: Start difference. First operand 4704 states and 7418 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:46,561 INFO L93 Difference]: Finished difference Result 6962 states and 11015 transitions. [2022-01-10 18:47:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:47:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:46,572 INFO L225 Difference]: With dead ends: 6962 [2022-01-10 18:47:46,572 INFO L226 Difference]: Without dead ends: 3948 [2022-01-10 18:47:46,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:46,576 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 47 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:46,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 651 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:46,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-01-10 18:47:46,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3948. [2022-01-10 18:47:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 1.574866987585508) internal successors, (6216), 3947 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6216 transitions. [2022-01-10 18:47:46,898 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6216 transitions. Word has length 67 [2022-01-10 18:47:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:46,898 INFO L470 AbstractCegarLoop]: Abstraction has 3948 states and 6216 transitions. [2022-01-10 18:47:46,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6216 transitions. [2022-01-10 18:47:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:47:46,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:46,900 INFO L514 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] [2022-01-10 18:47:46,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:47:46,900 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 544685371, now seen corresponding path program 1 times [2022-01-10 18:47:46,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:46,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768147535] [2022-01-10 18:47:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:46,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:46,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768147535] [2022-01-10 18:47:46,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768147535] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:46,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:46,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:46,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561103902] [2022-01-10 18:47:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:46,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:46,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:46,953 INFO L87 Difference]: Start difference. First operand 3948 states and 6216 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:47,300 INFO L93 Difference]: Finished difference Result 7389 states and 11808 transitions. [2022-01-10 18:47:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:47:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:47,316 INFO L225 Difference]: With dead ends: 7389 [2022-01-10 18:47:47,317 INFO L226 Difference]: Without dead ends: 5450 [2022-01-10 18:47:47,320 INFO L932 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 [2022-01-10 18:47:47,320 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:47,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 472 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2022-01-10 18:47:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2022-01-10 18:47:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5448 states, 5447 states have (on average 1.5825224894437304) internal successors, (8620), 5447 states have internal predecessors, (8620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 8620 transitions. [2022-01-10 18:47:47,698 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 8620 transitions. Word has length 67 [2022-01-10 18:47:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:47,698 INFO L470 AbstractCegarLoop]: Abstraction has 5448 states and 8620 transitions. [2022-01-10 18:47:47,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 8620 transitions. [2022-01-10 18:47:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:47:47,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:47,699 INFO L514 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] [2022-01-10 18:47:47,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:47:47,700 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1567878979, now seen corresponding path program 1 times [2022-01-10 18:47:47,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:47,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596127728] [2022-01-10 18:47:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:47,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:47,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:47,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596127728] [2022-01-10 18:47:47,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596127728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:47,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:47,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:47:47,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078670298] [2022-01-10 18:47:47,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:47,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:47:47,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:47:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:47,777 INFO L87 Difference]: Start difference. First operand 5448 states and 8620 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:48,507 INFO L93 Difference]: Finished difference Result 14271 states and 22522 transitions. [2022-01-10 18:47:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:47:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:47:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:48,525 INFO L225 Difference]: With dead ends: 14271 [2022-01-10 18:47:48,525 INFO L226 Difference]: Without dead ends: 8867 [2022-01-10 18:47:48,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:47:48,535 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 620 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:48,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 863 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:48,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2022-01-10 18:47:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 5587. [2022-01-10 18:47:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 1.5717866093805943) internal successors, (8780), 5586 states have internal predecessors, (8780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8780 transitions. [2022-01-10 18:47:48,958 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8780 transitions. Word has length 67 [2022-01-10 18:47:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:48,958 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 8780 transitions. [2022-01-10 18:47:48,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8780 transitions. [2022-01-10 18:47:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:47:48,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:48,960 INFO L514 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] [2022-01-10 18:47:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:47:48,960 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash 726672479, now seen corresponding path program 1 times [2022-01-10 18:47:48,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159243385] [2022-01-10 18:47:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:48,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:49,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:49,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159243385] [2022-01-10 18:47:49,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159243385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:49,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:49,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:49,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255666321] [2022-01-10 18:47:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:49,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:49,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:49,008 INFO L87 Difference]: Start difference. First operand 5587 states and 8780 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:49,346 INFO L93 Difference]: Finished difference Result 10080 states and 15820 transitions. [2022-01-10 18:47:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:49,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:47:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:49,354 INFO L225 Difference]: With dead ends: 10080 [2022-01-10 18:47:49,355 INFO L226 Difference]: Without dead ends: 4529 [2022-01-10 18:47:49,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:49,362 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 47 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:49,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 647 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2022-01-10 18:47:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4529. [2022-01-10 18:47:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4528 states have (on average 1.5655918727915195) internal successors, (7089), 4528 states have internal predecessors, (7089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7089 transitions. [2022-01-10 18:47:49,720 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7089 transitions. Word has length 67 [2022-01-10 18:47:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:49,720 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7089 transitions. [2022-01-10 18:47:49,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7089 transitions. [2022-01-10 18:47:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:47:49,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:49,722 INFO L514 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] [2022-01-10 18:47:49,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:47:49,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1858213311, now seen corresponding path program 1 times [2022-01-10 18:47:49,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654750666] [2022-01-10 18:47:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:49,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:49,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654750666] [2022-01-10 18:47:49,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654750666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:49,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:49,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:49,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994755460] [2022-01-10 18:47:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:49,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:49,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:49,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:49,759 INFO L87 Difference]: Start difference. First operand 4529 states and 7089 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:50,297 INFO L93 Difference]: Finished difference Result 8996 states and 14098 transitions. [2022-01-10 18:47:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 18:47:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:50,308 INFO L225 Difference]: With dead ends: 8996 [2022-01-10 18:47:50,308 INFO L226 Difference]: Without dead ends: 6251 [2022-01-10 18:47:50,312 INFO L932 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 [2022-01-10 18:47:50,313 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 184 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:50,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-01-10 18:47:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 4529. [2022-01-10 18:47:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 4528 states have (on average 1.5649293286219081) internal successors, (7086), 4528 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7086 transitions. [2022-01-10 18:47:50,737 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7086 transitions. Word has length 69 [2022-01-10 18:47:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7086 transitions. [2022-01-10 18:47:50,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7086 transitions. [2022-01-10 18:47:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:47:50,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:50,738 INFO L514 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] [2022-01-10 18:47:50,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:47:50,739 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -194381445, now seen corresponding path program 1 times [2022-01-10 18:47:50,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992941072] [2022-01-10 18:47:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:50,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:50,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:50,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992941072] [2022-01-10 18:47:50,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992941072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:50,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:50,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:50,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027913213] [2022-01-10 18:47:50,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:50,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:50,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:50,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:50,841 INFO L87 Difference]: Start difference. First operand 4529 states and 7086 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:51,558 INFO L93 Difference]: Finished difference Result 12261 states and 19496 transitions. [2022-01-10 18:47:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:51,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 18:47:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:51,572 INFO L225 Difference]: With dead ends: 12261 [2022-01-10 18:47:51,572 INFO L226 Difference]: Without dead ends: 8161 [2022-01-10 18:47:51,579 INFO L932 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 [2022-01-10 18:47:51,579 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 107 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:51,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 380 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2022-01-10 18:47:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 8087. [2022-01-10 18:47:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8086 states have (on average 1.5701211971308435) internal successors, (12696), 8086 states have internal predecessors, (12696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 12696 transitions. [2022-01-10 18:47:52,226 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 12696 transitions. Word has length 70 [2022-01-10 18:47:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:52,227 INFO L470 AbstractCegarLoop]: Abstraction has 8087 states and 12696 transitions. [2022-01-10 18:47:52,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 12696 transitions. [2022-01-10 18:47:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:47:52,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:52,229 INFO L514 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] [2022-01-10 18:47:52,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:47:52,229 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 704453733, now seen corresponding path program 1 times [2022-01-10 18:47:52,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:52,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226867978] [2022-01-10 18:47:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:52,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:52,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:52,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226867978] [2022-01-10 18:47:52,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226867978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:52,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:52,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:52,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128598124] [2022-01-10 18:47:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:52,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:52,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:52,304 INFO L87 Difference]: Start difference. First operand 8087 states and 12696 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:53,318 INFO L93 Difference]: Finished difference Result 20341 states and 32141 transitions. [2022-01-10 18:47:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:47:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:53,339 INFO L225 Difference]: With dead ends: 20341 [2022-01-10 18:47:53,339 INFO L226 Difference]: Without dead ends: 12683 [2022-01-10 18:47:53,349 INFO L932 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 [2022-01-10 18:47:53,350 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 129 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:53,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2022-01-10 18:47:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 12681. [2022-01-10 18:47:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 1.5579652996845426) internal successors, (19755), 12680 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 19755 transitions. [2022-01-10 18:47:54,544 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 19755 transitions. Word has length 72 [2022-01-10 18:47:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:54,544 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 19755 transitions. [2022-01-10 18:47:54,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 19755 transitions. [2022-01-10 18:47:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:47:54,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:54,546 INFO L514 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] [2022-01-10 18:47:54,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:47:54,547 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2143638629, now seen corresponding path program 1 times [2022-01-10 18:47:54,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:54,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537682269] [2022-01-10 18:47:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:54,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:54,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:54,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537682269] [2022-01-10 18:47:54,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537682269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:54,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:54,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:54,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345566913] [2022-01-10 18:47:54,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:54,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:54,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:54,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:54,612 INFO L87 Difference]: Start difference. First operand 12681 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:56,150 INFO L93 Difference]: Finished difference Result 31931 states and 49993 transitions. [2022-01-10 18:47:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:56,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 18:47:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:56,177 INFO L225 Difference]: With dead ends: 31931 [2022-01-10 18:47:56,177 INFO L226 Difference]: Without dead ends: 19812 [2022-01-10 18:47:56,192 INFO L932 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 [2022-01-10 18:47:56,193 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 132 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:56,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 561 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19812 states. [2022-01-10 18:47:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19812 to 19810. [2022-01-10 18:47:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19810 states, 19809 states have (on average 1.5436417789893482) internal successors, (30578), 19809 states have internal predecessors, (30578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19810 states to 19810 states and 30578 transitions. [2022-01-10 18:47:57,877 INFO L78 Accepts]: Start accepts. Automaton has 19810 states and 30578 transitions. Word has length 72 [2022-01-10 18:47:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:57,878 INFO L470 AbstractCegarLoop]: Abstraction has 19810 states and 30578 transitions. [2022-01-10 18:47:57,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 19810 states and 30578 transitions. [2022-01-10 18:47:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:47:57,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:57,880 INFO L514 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] [2022-01-10 18:47:57,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:47:57,880 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 711959355, now seen corresponding path program 1 times [2022-01-10 18:47:57,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:57,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686304185] [2022-01-10 18:47:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:57,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:47:57,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:57,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686304185] [2022-01-10 18:47:57,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686304185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:57,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:57,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:57,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584799074] [2022-01-10 18:47:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:57,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:57,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:57,958 INFO L87 Difference]: Start difference. First operand 19810 states and 30578 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:47:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:59,876 INFO L93 Difference]: Finished difference Result 40836 states and 62996 transitions. [2022-01-10 18:47:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:59,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 18:47:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:59,906 INFO L225 Difference]: With dead ends: 40836 [2022-01-10 18:47:59,906 INFO L226 Difference]: Without dead ends: 21177 [2022-01-10 18:47:59,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:59,925 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 419 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:47:59,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 435 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:47:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21177 states. [2022-01-10 18:48:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21177 to 19868. [2022-01-10 18:48:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19868 states, 19867 states have (on average 1.541903659334575) internal successors, (30633), 19867 states have internal predecessors, (30633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 30633 transitions. [2022-01-10 18:48:01,814 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 30633 transitions. Word has length 73 [2022-01-10 18:48:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:48:01,814 INFO L470 AbstractCegarLoop]: Abstraction has 19868 states and 30633 transitions. [2022-01-10 18:48:01,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 30633 transitions. [2022-01-10 18:48:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:48:01,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:48:01,816 INFO L514 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] [2022-01-10 18:48:01,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:48:01,816 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:48:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:48:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2137077765, now seen corresponding path program 1 times [2022-01-10 18:48:01,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:48:01,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266693679] [2022-01-10 18:48:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:48:01,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:48:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:48:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:48:01,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:48:01,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266693679] [2022-01-10 18:48:01,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266693679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:48:01,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:48:01,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:48:01,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044827137] [2022-01-10 18:48:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:48:01,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:48:01,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:48:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:48:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:48:01,862 INFO L87 Difference]: Start difference. First operand 19868 states and 30633 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:48:05,181 INFO L93 Difference]: Finished difference Result 54301 states and 83944 transitions. [2022-01-10 18:48:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:48:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 18:48:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:48:05,238 INFO L225 Difference]: With dead ends: 54301 [2022-01-10 18:48:05,238 INFO L226 Difference]: Without dead ends: 39536 [2022-01-10 18:48:05,259 INFO L932 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 [2022-01-10 18:48:05,260 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 173 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:48:05,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 569 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:48:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39536 states. [2022-01-10 18:48:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39536 to 19878. [2022-01-10 18:48:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19878 states, 19877 states have (on average 1.541631030839664) internal successors, (30643), 19877 states have internal predecessors, (30643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19878 states to 19878 states and 30643 transitions. [2022-01-10 18:48:07,350 INFO L78 Accepts]: Start accepts. Automaton has 19878 states and 30643 transitions. Word has length 74 [2022-01-10 18:48:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:48:07,350 INFO L470 AbstractCegarLoop]: Abstraction has 19878 states and 30643 transitions. [2022-01-10 18:48:07,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19878 states and 30643 transitions. [2022-01-10 18:48:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:48:07,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:48:07,353 INFO L514 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] [2022-01-10 18:48:07,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:48:07,353 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:48:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:48:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -147309184, now seen corresponding path program 1 times [2022-01-10 18:48:07,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:48:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836445964] [2022-01-10 18:48:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:48:07,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:48:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:48:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:48:07,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:48:07,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836445964] [2022-01-10 18:48:07,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836445964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:48:07,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:48:07,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:48:07,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016773301] [2022-01-10 18:48:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:48:07,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:48:07,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:48:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:48:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:48:07,431 INFO L87 Difference]: Start difference. First operand 19878 states and 30643 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:48:11,230 INFO L93 Difference]: Finished difference Result 52779 states and 81316 transitions. [2022-01-10 18:48:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:48:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 18:48:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:48:11,285 INFO L225 Difference]: With dead ends: 52779 [2022-01-10 18:48:11,285 INFO L226 Difference]: Without dead ends: 34097 [2022-01-10 18:48:11,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:48:11,309 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 746 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:48:11,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 625 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:48:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34097 states. [2022-01-10 18:48:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34097 to 20059. [2022-01-10 18:48:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20059 states, 20058 states have (on average 1.5369428656895006) internal successors, (30828), 20058 states have internal predecessors, (30828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20059 states to 20059 states and 30828 transitions. [2022-01-10 18:48:13,648 INFO L78 Accepts]: Start accepts. Automaton has 20059 states and 30828 transitions. Word has length 75 [2022-01-10 18:48:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:48:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 20059 states and 30828 transitions. [2022-01-10 18:48:13,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 20059 states and 30828 transitions. [2022-01-10 18:48:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:48:13,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:48:13,651 INFO L514 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] [2022-01-10 18:48:13,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:48:13,652 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:48:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:48:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1669104796, now seen corresponding path program 1 times [2022-01-10 18:48:13,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:48:13,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52923752] [2022-01-10 18:48:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:48:13,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:48:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:48:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:48:13,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:48:13,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52923752] [2022-01-10 18:48:13,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52923752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:48:13,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:48:13,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:48:13,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862096438] [2022-01-10 18:48:13,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:48:13,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:48:13,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:48:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:48:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:48:13,714 INFO L87 Difference]: Start difference. First operand 20059 states and 30828 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:48:15,838 INFO L93 Difference]: Finished difference Result 32497 states and 49960 transitions. [2022-01-10 18:48:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:48:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 18:48:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:48:15,862 INFO L225 Difference]: With dead ends: 32497 [2022-01-10 18:48:15,862 INFO L226 Difference]: Without dead ends: 17423 [2022-01-10 18:48:15,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:48:15,876 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 23 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:48:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 620 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:48:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17423 states. [2022-01-10 18:48:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17423 to 17423. [2022-01-10 18:48:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17423 states, 17422 states have (on average 1.532602456663988) internal successors, (26701), 17422 states have internal predecessors, (26701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 26701 transitions. [2022-01-10 18:48:17,796 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 26701 transitions. Word has length 75 [2022-01-10 18:48:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:48:17,796 INFO L470 AbstractCegarLoop]: Abstraction has 17423 states and 26701 transitions. [2022-01-10 18:48:17,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 26701 transitions. [2022-01-10 18:48:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:48:17,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:48:17,799 INFO L514 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] [2022-01-10 18:48:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:48:17,799 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:48:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:48:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash 638902962, now seen corresponding path program 1 times [2022-01-10 18:48:17,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:48:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519827268] [2022-01-10 18:48:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:48:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:48:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:48:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:48:17,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:48:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519827268] [2022-01-10 18:48:17,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519827268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:48:17,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:48:17,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:48:17,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521253827] [2022-01-10 18:48:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:48:17,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:48:17,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:48:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:48:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:48:17,873 INFO L87 Difference]: Start difference. First operand 17423 states and 26701 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:48:20,267 INFO L93 Difference]: Finished difference Result 32471 states and 50461 transitions. [2022-01-10 18:48:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:48:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 18:48:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:48:20,300 INFO L225 Difference]: With dead ends: 32471 [2022-01-10 18:48:20,301 INFO L226 Difference]: Without dead ends: 23559 [2022-01-10 18:48:20,313 INFO L932 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 [2022-01-10 18:48:20,313 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 106 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:48:20,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 432 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:48:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23559 states. [2022-01-10 18:48:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23559 to 23557. [2022-01-10 18:48:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23557 states, 23556 states have (on average 1.5404567838342673) internal successors, (36287), 23556 states have internal predecessors, (36287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 36287 transitions. [2022-01-10 18:48:22,739 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 36287 transitions. Word has length 75 [2022-01-10 18:48:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:48:22,739 INFO L470 AbstractCegarLoop]: Abstraction has 23557 states and 36287 transitions. [2022-01-10 18:48:22,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 36287 transitions. [2022-01-10 18:48:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:48:22,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:48:22,741 INFO L514 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] [2022-01-10 18:48:22,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:48:22,741 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:48:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:48:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2097450985, now seen corresponding path program 1 times [2022-01-10 18:48:22,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:48:22,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898091309] [2022-01-10 18:48:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:48:22,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:48:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:48:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:48:22,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:48:22,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898091309] [2022-01-10 18:48:22,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898091309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:48:22,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:48:22,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:48:22,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986951147] [2022-01-10 18:48:22,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:48:22,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:48:22,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:48:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:48:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:48:22,905 INFO L87 Difference]: Start difference. First operand 23557 states and 36287 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:48:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:48:44,638 INFO L93 Difference]: Finished difference Result 119815 states and 188561 transitions. [2022-01-10 18:48:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:48:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 18:48:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:48:44,820 INFO L225 Difference]: With dead ends: 119815 [2022-01-10 18:48:44,821 INFO L226 Difference]: Without dead ends: 97295 [2022-01-10 18:48:44,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:48:44,859 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 804 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:48:44,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 1444 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:48:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97295 states.