/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.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:46:34,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:46:34,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:46:34,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:46:34,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:46:34,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:46:34,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:46:34,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:46:34,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:46:34,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:46:34,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:46:34,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:46:34,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:46:34,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:46:34,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:46:34,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:46:34,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:46:34,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:46:34,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:46:34,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:46:34,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:46:34,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:46:34,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:46:34,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:46:34,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:46:34,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:46:34,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:46:34,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:46:34,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:46:34,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:46:34,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:46:34,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:46:34,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:46:34,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:46:34,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:46:34,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:46:34,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:46:34,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:46:34,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:46:34,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:46:34,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:46:34,661 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 18:46:34,694 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:46:34,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:46:34,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:46:34,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:46:34,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:46:34,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:46:34,696 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:46:34,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:46:34,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:46:34,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:46:34,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:46:34,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:46:34,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:46:34,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:46:34,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:46:34,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:46:34,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:46:34,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:46:34,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:46:34,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:46:34,701 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:46:34,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:46:34,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:46:34,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:46:34,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:46:34,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:46:34,999 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:46:35,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:46:35,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f17db51c/dd413497a9134a0c90d6ffb992b5e839/FLAG552e711c5 [2022-01-10 18:46:35,528 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:46:35,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:46:35,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f17db51c/dd413497a9134a0c90d6ffb992b5e839/FLAG552e711c5 [2022-01-10 18:46:35,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f17db51c/dd413497a9134a0c90d6ffb992b5e839 [2022-01-10 18:46:35,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:46:35,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:46:35,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:46:35,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:46:35,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:46:35,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:46:35" (1/1) ... [2022-01-10 18:46:35,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524e0686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:35, skipping insertion in model container [2022-01-10 18:46:35,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:46:35" (1/1) ... [2022-01-10 18:46:35,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:46:35,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:46:36,246 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.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2022-01-10 18:46:36,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:46:36,307 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:46:36,358 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.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2022-01-10 18:46:36,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:46:36,403 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:46:36,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36 WrapperNode [2022-01-10 18:46:36,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:46:36,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:46:36,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:46:36,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:46:36,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,480 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 575 [2022-01-10 18:46:36,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:46:36,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:46:36,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:46:36,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:46:36,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:46:36,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:46:36,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:46:36,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:46:36,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (1/1) ... [2022-01-10 18:46:36,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:46:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:46:36,592 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 18:46:36,606 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 18:46:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:46:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:46:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:46:36,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:46:36,792 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:46:36,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:46:37,229 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:46:37,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:46:37,237 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:46:37,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:46:37 BoogieIcfgContainer [2022-01-10 18:46:37,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:46:37,240 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:46:37,240 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:46:37,241 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:46:37,243 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:46:37" (1/1) ... [2022-01-10 18:46:37,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:46:37 BasicIcfg [2022-01-10 18:46:37,676 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:46:37,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:46:37,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:46:37,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:46:37,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:46:35" (1/4) ... [2022-01-10 18:46:37,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2c1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:46:37, skipping insertion in model container [2022-01-10 18:46:37,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:46:36" (2/4) ... [2022-01-10 18:46:37,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2c1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:46:37, skipping insertion in model container [2022-01-10 18:46:37,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:46:37" (3/4) ... [2022-01-10 18:46:37,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2c1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:46:37, skipping insertion in model container [2022-01-10 18:46:37,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:46:37" (4/4) ... [2022-01-10 18:46:37,685 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:46:37,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:46:37,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:46:37,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:46:37,751 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 18:46:37,751 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:46:37,768 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 18:46:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:46:37,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:37,779 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 18:46:37,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:37,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1759176982, now seen corresponding path program 1 times [2022-01-10 18:46:37,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:37,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852104118] [2022-01-10 18:46:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:37,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:38,353 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 18:46:38,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:38,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852104118] [2022-01-10 18:46:38,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852104118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:38,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:38,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:38,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96518354] [2022-01-10 18:46:38,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:38,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:38,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:38,399 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 18:46:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:38,524 INFO L93 Difference]: Finished difference Result 303 states and 512 transitions. [2022-01-10 18:46:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:38,527 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 18:46:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:38,540 INFO L225 Difference]: With dead ends: 303 [2022-01-10 18:46:38,541 INFO L226 Difference]: Without dead ends: 211 [2022-01-10 18:46:38,544 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 18:46:38,548 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 18:46:38,578 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 18:46:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-01-10 18:46:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-01-10 18:46:38,647 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 18:46:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 327 transitions. [2022-01-10 18:46:38,652 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 327 transitions. Word has length 56 [2022-01-10 18:46:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 327 transitions. [2022-01-10 18:46:38,653 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 18:46:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 327 transitions. [2022-01-10 18:46:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:46:38,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:38,654 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 18:46:38,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:46:38,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash -350815428, now seen corresponding path program 1 times [2022-01-10 18:46:38,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:38,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353183267] [2022-01-10 18:46:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:38,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:38,834 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 18:46:38,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:38,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353183267] [2022-01-10 18:46:38,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353183267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:38,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:38,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:38,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337635610] [2022-01-10 18:46:38,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:38,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:38,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:38,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:38,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:38,838 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 18:46:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:38,924 INFO L93 Difference]: Finished difference Result 583 states and 912 transitions. [2022-01-10 18:46:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:38,924 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 18:46:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:38,927 INFO L225 Difference]: With dead ends: 583 [2022-01-10 18:46:38,927 INFO L226 Difference]: Without dead ends: 400 [2022-01-10 18:46:38,928 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 18:46:38,931 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 18:46:38,931 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 18:46:38,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-10 18:46:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2022-01-10 18:46:38,974 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 18:46:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 622 transitions. [2022-01-10 18:46:38,975 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 622 transitions. Word has length 58 [2022-01-10 18:46:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:38,975 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 622 transitions. [2022-01-10 18:46:38,976 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 18:46:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 622 transitions. [2022-01-10 18:46:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:46:38,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:38,986 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 18:46:38,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:46:38,989 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:38,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1550052374, now seen corresponding path program 1 times [2022-01-10 18:46:38,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:38,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910556508] [2022-01-10 18:46:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:38,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:39,089 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 18:46:39,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:39,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910556508] [2022-01-10 18:46:39,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910556508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:39,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:39,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:39,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549890495] [2022-01-10 18:46:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:39,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:39,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:39,092 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 18:46:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:39,139 INFO L93 Difference]: Finished difference Result 1156 states and 1802 transitions. [2022-01-10 18:46:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:39,140 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 18:46:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:39,143 INFO L225 Difference]: With dead ends: 1156 [2022-01-10 18:46:39,144 INFO L226 Difference]: Without dead ends: 786 [2022-01-10 18:46:39,149 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 18:46:39,151 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 18:46:39,152 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 18:46:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-01-10 18:46:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 400. [2022-01-10 18:46:39,190 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 18:46:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 624 transitions. [2022-01-10 18:46:39,191 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 624 transitions. Word has length 59 [2022-01-10 18:46:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:39,193 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 624 transitions. [2022-01-10 18:46:39,193 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 18:46:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 624 transitions. [2022-01-10 18:46:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:46:39,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:39,194 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 18:46:39,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:46:39,195 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash 698178371, now seen corresponding path program 1 times [2022-01-10 18:46:39,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:39,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912148823] [2022-01-10 18:46:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:39,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:39,356 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 18:46:39,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:39,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912148823] [2022-01-10 18:46:39,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912148823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:39,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:39,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:39,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633523893] [2022-01-10 18:46:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:39,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:39,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:39,359 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 18:46:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:39,403 INFO L93 Difference]: Finished difference Result 684 states and 1105 transitions. [2022-01-10 18:46:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:39,404 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 18:46:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:39,406 INFO L225 Difference]: With dead ends: 684 [2022-01-10 18:46:39,407 INFO L226 Difference]: Without dead ends: 523 [2022-01-10 18:46:39,407 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 18:46:39,412 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 18:46:39,413 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 18:46:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-10 18:46:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 521. [2022-01-10 18:46:39,443 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 18:46:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 829 transitions. [2022-01-10 18:46:39,445 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 829 transitions. Word has length 60 [2022-01-10 18:46:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:39,446 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 829 transitions. [2022-01-10 18:46:39,446 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 18:46:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 829 transitions. [2022-01-10 18:46:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:46:39,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:39,449 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 18:46:39,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:46:39,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash -852493033, now seen corresponding path program 1 times [2022-01-10 18:46:39,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:39,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732817311] [2022-01-10 18:46:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:39,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:39,592 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 18:46:39,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732817311] [2022-01-10 18:46:39,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732817311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:39,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:39,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:46:39,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231515002] [2022-01-10 18:46:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:39,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:46:39,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:46:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:46:39,595 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 18:46:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:39,781 INFO L93 Difference]: Finished difference Result 2006 states and 3190 transitions. [2022-01-10 18:46:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:46:39,781 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 18:46:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:39,789 INFO L225 Difference]: With dead ends: 2006 [2022-01-10 18:46:39,789 INFO L226 Difference]: Without dead ends: 1497 [2022-01-10 18:46:39,791 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 18:46:39,792 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:46:39,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 891 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:46:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-01-10 18:46:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1004. [2022-01-10 18:46:39,913 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 18:46:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1586 transitions. [2022-01-10 18:46:39,916 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1586 transitions. Word has length 60 [2022-01-10 18:46:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:39,917 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1586 transitions. [2022-01-10 18:46:39,920 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 18:46:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1586 transitions. [2022-01-10 18:46:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:46:39,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:39,924 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 18:46:39,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:46:39,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash 782939259, now seen corresponding path program 1 times [2022-01-10 18:46:39,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:39,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200290091] [2022-01-10 18:46:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:39,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:40,010 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 18:46:40,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200290091] [2022-01-10 18:46:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200290091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:40,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:40,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:40,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775302750] [2022-01-10 18:46:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:40,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:40,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:40,012 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 18:46:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:40,084 INFO L93 Difference]: Finished difference Result 1753 states and 2763 transitions. [2022-01-10 18:46:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:40,084 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 18:46:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:40,088 INFO L225 Difference]: With dead ends: 1753 [2022-01-10 18:46:40,088 INFO L226 Difference]: Without dead ends: 765 [2022-01-10 18:46:40,090 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 18:46:40,092 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 18:46:40,092 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 18:46:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-10 18:46:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2022-01-10 18:46:40,144 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 18:46:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1201 transitions. [2022-01-10 18:46:40,146 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1201 transitions. Word has length 60 [2022-01-10 18:46:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:40,146 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1201 transitions. [2022-01-10 18:46:40,146 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 18:46:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1201 transitions. [2022-01-10 18:46:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:46:40,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:40,147 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 18:46:40,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:46:40,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash -454976374, now seen corresponding path program 1 times [2022-01-10 18:46:40,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:40,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141037808] [2022-01-10 18:46:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:40,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:40,192 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 18:46:40,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:40,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141037808] [2022-01-10 18:46:40,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141037808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:40,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:40,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:40,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870015505] [2022-01-10 18:46:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:40,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:40,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:40,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:40,195 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 18:46:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:40,283 INFO L93 Difference]: Finished difference Result 1508 states and 2361 transitions. [2022-01-10 18:46:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:40,284 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 18:46:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:40,287 INFO L225 Difference]: With dead ends: 1508 [2022-01-10 18:46:40,288 INFO L226 Difference]: Without dead ends: 1009 [2022-01-10 18:46:40,289 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 18:46:40,289 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 18:46:40,290 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 18:46:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-01-10 18:46:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 765. [2022-01-10 18:46:40,353 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 18:46:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1200 transitions. [2022-01-10 18:46:40,355 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1200 transitions. Word has length 62 [2022-01-10 18:46:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:40,355 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1200 transitions. [2022-01-10 18:46:40,355 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 18:46:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1200 transitions. [2022-01-10 18:46:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:46:40,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:40,357 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 18:46:40,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:46:40,357 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:40,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1486163113, now seen corresponding path program 1 times [2022-01-10 18:46:40,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537868404] [2022-01-10 18:46:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:40,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:40,421 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 18:46:40,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537868404] [2022-01-10 18:46:40,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537868404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:40,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:40,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:40,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388414095] [2022-01-10 18:46:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:40,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:40,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:40,423 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 18:46:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:40,575 INFO L93 Difference]: Finished difference Result 2239 states and 3515 transitions. [2022-01-10 18:46:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:40,576 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 18:46:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:40,582 INFO L225 Difference]: With dead ends: 2239 [2022-01-10 18:46:40,582 INFO L226 Difference]: Without dead ends: 1504 [2022-01-10 18:46:40,584 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 18:46:40,584 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 18:46:40,585 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 18:46:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-01-10 18:46:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 774. [2022-01-10 18:46:40,678 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 18:46:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1210 transitions. [2022-01-10 18:46:40,680 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1210 transitions. Word has length 63 [2022-01-10 18:46:40,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:40,681 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1210 transitions. [2022-01-10 18:46:40,681 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 18:46:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1210 transitions. [2022-01-10 18:46:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:46:40,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:40,682 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 18:46:40,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:46:40,683 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 855704488, now seen corresponding path program 1 times [2022-01-10 18:46:40,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770706217] [2022-01-10 18:46:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:40,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:40,818 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 18:46:40,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:40,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770706217] [2022-01-10 18:46:40,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770706217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:40,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:40,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:40,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560105706] [2022-01-10 18:46:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:40,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:40,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:40,821 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 18:46:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:41,001 INFO L93 Difference]: Finished difference Result 1946 states and 3137 transitions. [2022-01-10 18:46:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:41,002 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 18:46:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:41,008 INFO L225 Difference]: With dead ends: 1946 [2022-01-10 18:46:41,008 INFO L226 Difference]: Without dead ends: 1330 [2022-01-10 18:46:41,009 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 18:46:41,010 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 18:46:41,011 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 18:46:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2022-01-10 18:46:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1319. [2022-01-10 18:46:41,145 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 18:46:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2093 transitions. [2022-01-10 18:46:41,149 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2093 transitions. Word has length 63 [2022-01-10 18:46:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:41,150 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 2093 transitions. [2022-01-10 18:46:41,150 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 18:46:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2093 transitions. [2022-01-10 18:46:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:46:41,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:41,158 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 18:46:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:46:41,159 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1786863710, now seen corresponding path program 1 times [2022-01-10 18:46:41,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:41,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697936746] [2022-01-10 18:46:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:41,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:41,278 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 18:46:41,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:41,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697936746] [2022-01-10 18:46:41,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697936746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:41,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:41,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:41,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788434904] [2022-01-10 18:46:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:41,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:41,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:41,280 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 18:46:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:41,574 INFO L93 Difference]: Finished difference Result 3631 states and 5839 transitions. [2022-01-10 18:46:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:41,575 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 18:46:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:41,585 INFO L225 Difference]: With dead ends: 3631 [2022-01-10 18:46:41,585 INFO L226 Difference]: Without dead ends: 2470 [2022-01-10 18:46:41,589 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 18:46:41,590 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 18:46:41,591 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 18:46:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-01-10 18:46:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2022-01-10 18:46:41,864 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 18:46:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3903 transitions. [2022-01-10 18:46:41,873 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3903 transitions. Word has length 65 [2022-01-10 18:46:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:41,874 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3903 transitions. [2022-01-10 18:46:41,874 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 18:46:41,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3903 transitions. [2022-01-10 18:46:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:46:41,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:41,876 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 18:46:41,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:46:41,876 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -231611714, now seen corresponding path program 1 times [2022-01-10 18:46:41,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:41,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923651462] [2022-01-10 18:46:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:41,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:41,989 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 18:46:41,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:41,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923651462] [2022-01-10 18:46:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923651462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:41,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:41,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212372417] [2022-01-10 18:46:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:41,992 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 18:46:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:42,490 INFO L93 Difference]: Finished difference Result 7106 states and 11270 transitions. [2022-01-10 18:46:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:42,491 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 18:46:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:42,510 INFO L225 Difference]: With dead ends: 7106 [2022-01-10 18:46:42,511 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 18:46:42,516 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 18:46:42,516 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 18:46:42,517 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 18:46:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 18:46:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4704. [2022-01-10 18:46:43,054 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 18:46:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 7418 transitions. [2022-01-10 18:46:43,073 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 7418 transitions. Word has length 65 [2022-01-10 18:46:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:43,074 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 7418 transitions. [2022-01-10 18:46:43,074 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 18:46:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 7418 transitions. [2022-01-10 18:46:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:46:43,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:43,077 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 18:46:43,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:46:43,078 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1245473408, now seen corresponding path program 1 times [2022-01-10 18:46:43,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:43,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527778333] [2022-01-10 18:46:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:43,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:43,152 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 18:46:43,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:43,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527778333] [2022-01-10 18:46:43,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527778333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:43,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:43,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:43,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631977399] [2022-01-10 18:46:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:43,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:43,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:43,154 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 18:46:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:43,557 INFO L93 Difference]: Finished difference Result 6962 states and 11015 transitions. [2022-01-10 18:46:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:43,557 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 18:46:43,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:43,573 INFO L225 Difference]: With dead ends: 6962 [2022-01-10 18:46:43,573 INFO L226 Difference]: Without dead ends: 3948 [2022-01-10 18:46:43,580 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 18:46:43,581 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 18:46:43,581 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 18:46:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-01-10 18:46:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3948. [2022-01-10 18:46:43,967 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 18:46:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6216 transitions. [2022-01-10 18:46:43,980 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6216 transitions. Word has length 67 [2022-01-10 18:46:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:43,981 INFO L470 AbstractCegarLoop]: Abstraction has 3948 states and 6216 transitions. [2022-01-10 18:46:43,981 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 18:46:43,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6216 transitions. [2022-01-10 18:46:43,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:46:43,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:43,984 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 18:46:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:46:43,984 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 544685371, now seen corresponding path program 1 times [2022-01-10 18:46:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:43,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567378161] [2022-01-10 18:46:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:43,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:44,066 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 18:46:44,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:44,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567378161] [2022-01-10 18:46:44,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567378161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:44,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247989709] [2022-01-10 18:46:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:44,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:44,068 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 18:46:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:44,547 INFO L93 Difference]: Finished difference Result 7389 states and 11808 transitions. [2022-01-10 18:46:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:44,547 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 18:46:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:44,572 INFO L225 Difference]: With dead ends: 7389 [2022-01-10 18:46:44,572 INFO L226 Difference]: Without dead ends: 5450 [2022-01-10 18:46:44,578 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 18:46:44,579 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 18:46:44,579 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 18:46:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2022-01-10 18:46:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5448. [2022-01-10 18:46:45,018 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 18:46:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 8620 transitions. [2022-01-10 18:46:45,065 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 8620 transitions. Word has length 67 [2022-01-10 18:46:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:45,065 INFO L470 AbstractCegarLoop]: Abstraction has 5448 states and 8620 transitions. [2022-01-10 18:46:45,072 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 18:46:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 8620 transitions. [2022-01-10 18:46:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:46:45,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:45,074 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 18:46:45,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:46:45,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1567878979, now seen corresponding path program 1 times [2022-01-10 18:46:45,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:45,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969777739] [2022-01-10 18:46:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:45,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:45,192 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 18:46:45,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:45,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969777739] [2022-01-10 18:46:45,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969777739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:45,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:45,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:46:45,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208969838] [2022-01-10 18:46:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:45,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:46:45,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:46:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:46:45,194 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 18:46:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:45,860 INFO L93 Difference]: Finished difference Result 14271 states and 22522 transitions. [2022-01-10 18:46:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:46:45,861 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 18:46:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:45,882 INFO L225 Difference]: With dead ends: 14271 [2022-01-10 18:46:45,882 INFO L226 Difference]: Without dead ends: 8867 [2022-01-10 18:46:45,895 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 18:46:45,896 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 18:46:45,896 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 18:46:45,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2022-01-10 18:46:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 5587. [2022-01-10 18:46:46,469 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 18:46:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8780 transitions. [2022-01-10 18:46:46,482 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8780 transitions. Word has length 67 [2022-01-10 18:46:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 8780 transitions. [2022-01-10 18:46:46,482 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 18:46:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8780 transitions. [2022-01-10 18:46:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:46:46,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:46,485 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 18:46:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:46:46,485 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash 726672479, now seen corresponding path program 1 times [2022-01-10 18:46:46,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913080947] [2022-01-10 18:46:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:46,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:46,551 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 18:46:46,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:46,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913080947] [2022-01-10 18:46:46,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913080947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:46,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:46,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:46,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156146178] [2022-01-10 18:46:46,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:46,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:46,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:46,554 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 18:46:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:47,035 INFO L93 Difference]: Finished difference Result 10080 states and 15820 transitions. [2022-01-10 18:46:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:47,036 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 18:46:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:47,046 INFO L225 Difference]: With dead ends: 10080 [2022-01-10 18:46:47,046 INFO L226 Difference]: Without dead ends: 4529 [2022-01-10 18:46:47,054 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 18:46:47,055 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 18:46:47,055 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 18:46:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2022-01-10 18:46:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4529. [2022-01-10 18:46:47,383 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 18:46:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7089 transitions. [2022-01-10 18:46:47,389 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7089 transitions. Word has length 67 [2022-01-10 18:46:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:47,390 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7089 transitions. [2022-01-10 18:46:47,390 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 18:46:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7089 transitions. [2022-01-10 18:46:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:46:47,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:47,392 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 18:46:47,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:46:47,392 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1858213311, now seen corresponding path program 1 times [2022-01-10 18:46:47,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:47,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954796992] [2022-01-10 18:46:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:47,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:47,445 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 18:46:47,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:47,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954796992] [2022-01-10 18:46:47,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954796992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:47,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:47,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:47,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59728438] [2022-01-10 18:46:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:47,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:47,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:47,448 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 18:46:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:48,037 INFO L93 Difference]: Finished difference Result 8996 states and 14098 transitions. [2022-01-10 18:46:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:48,038 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 18:46:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:48,054 INFO L225 Difference]: With dead ends: 8996 [2022-01-10 18:46:48,054 INFO L226 Difference]: Without dead ends: 6251 [2022-01-10 18:46:48,061 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 18:46:48,062 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 18:46:48,062 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 18:46:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-01-10 18:46:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 4529. [2022-01-10 18:46:48,419 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 18:46:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 7086 transitions. [2022-01-10 18:46:48,425 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 7086 transitions. Word has length 69 [2022-01-10 18:46:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:48,425 INFO L470 AbstractCegarLoop]: Abstraction has 4529 states and 7086 transitions. [2022-01-10 18:46:48,425 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 18:46:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 7086 transitions. [2022-01-10 18:46:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:46:48,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:48,427 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 18:46:48,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:46:48,427 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -194381445, now seen corresponding path program 1 times [2022-01-10 18:46:48,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:48,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178512317] [2022-01-10 18:46:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:48,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:48,535 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 18:46:48,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178512317] [2022-01-10 18:46:48,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178512317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:48,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:48,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:48,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749958780] [2022-01-10 18:46:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:48,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:48,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:48,537 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 18:46:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:49,417 INFO L93 Difference]: Finished difference Result 12261 states and 19496 transitions. [2022-01-10 18:46:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:49,417 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 18:46:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:49,435 INFO L225 Difference]: With dead ends: 12261 [2022-01-10 18:46:49,435 INFO L226 Difference]: Without dead ends: 8161 [2022-01-10 18:46:49,442 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 18:46:49,442 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 18:46:49,443 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 18:46:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2022-01-10 18:46:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 8087. [2022-01-10 18:46:50,208 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 18:46:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 12696 transitions. [2022-01-10 18:46:50,226 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 12696 transitions. Word has length 70 [2022-01-10 18:46:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:50,226 INFO L470 AbstractCegarLoop]: Abstraction has 8087 states and 12696 transitions. [2022-01-10 18:46:50,227 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 18:46:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 12696 transitions. [2022-01-10 18:46:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:46:50,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:50,229 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 18:46:50,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:46:50,229 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash 704453733, now seen corresponding path program 1 times [2022-01-10 18:46:50,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:50,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461158804] [2022-01-10 18:46:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:50,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:50,324 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 18:46:50,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:50,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461158804] [2022-01-10 18:46:50,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461158804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:50,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:50,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:50,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745423546] [2022-01-10 18:46:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:50,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:50,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:50,325 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 18:46:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:51,434 INFO L93 Difference]: Finished difference Result 20341 states and 32141 transitions. [2022-01-10 18:46:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:51,435 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 18:46:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:51,470 INFO L225 Difference]: With dead ends: 20341 [2022-01-10 18:46:51,471 INFO L226 Difference]: Without dead ends: 12683 [2022-01-10 18:46:51,489 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 18:46:51,490 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 18:46:51,490 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 18:46:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2022-01-10 18:46:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 12681. [2022-01-10 18:46:52,629 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 18:46:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 19755 transitions. [2022-01-10 18:46:52,658 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 19755 transitions. Word has length 72 [2022-01-10 18:46:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:52,659 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 19755 transitions. [2022-01-10 18:46:52,659 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 18:46:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 19755 transitions. [2022-01-10 18:46:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:46:52,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:52,661 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 18:46:52,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:46:52,662 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2143638629, now seen corresponding path program 1 times [2022-01-10 18:46:52,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378311247] [2022-01-10 18:46:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:52,740 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 18:46:52,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378311247] [2022-01-10 18:46:52,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378311247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:52,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:52,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:46:52,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804401378] [2022-01-10 18:46:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:52,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:46:52,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:46:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:46:52,743 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 18:46:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:54,609 INFO L93 Difference]: Finished difference Result 31931 states and 49993 transitions. [2022-01-10 18:46:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:46:54,610 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 18:46:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:54,650 INFO L225 Difference]: With dead ends: 31931 [2022-01-10 18:46:54,650 INFO L226 Difference]: Without dead ends: 19812 [2022-01-10 18:46:54,678 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 18:46:54,678 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 18:46:54,679 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 18:46:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19812 states. [2022-01-10 18:46:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19812 to 19810. [2022-01-10 18:46:56,433 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 18:46:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19810 states to 19810 states and 30578 transitions. [2022-01-10 18:46:56,467 INFO L78 Accepts]: Start accepts. Automaton has 19810 states and 30578 transitions. Word has length 72 [2022-01-10 18:46:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:46:56,468 INFO L470 AbstractCegarLoop]: Abstraction has 19810 states and 30578 transitions. [2022-01-10 18:46:56,468 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 18:46:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19810 states and 30578 transitions. [2022-01-10 18:46:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 18:46:56,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:46:56,470 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 18:46:56,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:46:56,471 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:46:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:46:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash 711959355, now seen corresponding path program 1 times [2022-01-10 18:46:56,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:46:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224944773] [2022-01-10 18:46:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:46:56,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:46:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:46:56,566 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 18:46:56,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:46:56,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224944773] [2022-01-10 18:46:56,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224944773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:46:56,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:46:56,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:46:56,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247356740] [2022-01-10 18:46:56,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:46:56,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:46:56,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:46:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:46:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:46:56,568 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 18:46:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:46:58,709 INFO L93 Difference]: Finished difference Result 40836 states and 62996 transitions. [2022-01-10 18:46:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:46:58,710 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 18:46:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:46:58,742 INFO L225 Difference]: With dead ends: 40836 [2022-01-10 18:46:58,742 INFO L226 Difference]: Without dead ends: 21177 [2022-01-10 18:46:58,764 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 18:46:58,765 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 18:46:58,765 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 18:46:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21177 states. [2022-01-10 18:47:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21177 to 19868. [2022-01-10 18:47:00,790 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 18:47:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 30633 transitions. [2022-01-10 18:47:00,824 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 30633 transitions. Word has length 73 [2022-01-10 18:47:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:00,824 INFO L470 AbstractCegarLoop]: Abstraction has 19868 states and 30633 transitions. [2022-01-10 18:47:00,824 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 18:47:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 30633 transitions. [2022-01-10 18:47:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 18:47:00,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:00,828 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 18:47:00,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:47:00,828 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2137077765, now seen corresponding path program 1 times [2022-01-10 18:47:00,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:00,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025812962] [2022-01-10 18:47:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:00,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:00,873 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 18:47:00,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025812962] [2022-01-10 18:47:00,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025812962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:00,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:00,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:00,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763115212] [2022-01-10 18:47:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:00,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:00,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:00,875 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 18:47:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:04,278 INFO L93 Difference]: Finished difference Result 54301 states and 83944 transitions. [2022-01-10 18:47:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:04,279 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 18:47:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:04,345 INFO L225 Difference]: With dead ends: 54301 [2022-01-10 18:47:04,345 INFO L226 Difference]: Without dead ends: 39536 [2022-01-10 18:47:04,368 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 18:47:04,369 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 18:47:04,369 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 18:47:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39536 states. [2022-01-10 18:47:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39536 to 19878. [2022-01-10 18:47:06,514 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 18:47:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19878 states to 19878 states and 30643 transitions. [2022-01-10 18:47:06,543 INFO L78 Accepts]: Start accepts. Automaton has 19878 states and 30643 transitions. Word has length 74 [2022-01-10 18:47:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:06,544 INFO L470 AbstractCegarLoop]: Abstraction has 19878 states and 30643 transitions. [2022-01-10 18:47:06,544 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 18:47:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 19878 states and 30643 transitions. [2022-01-10 18:47:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:47:06,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:06,547 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 18:47:06,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:47:06,547 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:06,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -147309184, now seen corresponding path program 1 times [2022-01-10 18:47:06,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:06,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863684784] [2022-01-10 18:47:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:06,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:06,662 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 18:47:06,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863684784] [2022-01-10 18:47:06,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863684784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:06,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:06,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:47:06,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427090750] [2022-01-10 18:47:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:06,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:47:06,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:47:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:06,664 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 18:47:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:10,386 INFO L93 Difference]: Finished difference Result 52779 states and 81316 transitions. [2022-01-10 18:47:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:47:10,387 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 18:47:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:10,435 INFO L225 Difference]: With dead ends: 52779 [2022-01-10 18:47:10,435 INFO L226 Difference]: Without dead ends: 34097 [2022-01-10 18:47:10,452 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 18:47:10,453 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 18:47:10,453 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 18:47:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34097 states. [2022-01-10 18:47:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34097 to 20059. [2022-01-10 18:47:12,758 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 18:47:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20059 states to 20059 states and 30828 transitions. [2022-01-10 18:47:12,787 INFO L78 Accepts]: Start accepts. Automaton has 20059 states and 30828 transitions. Word has length 75 [2022-01-10 18:47:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:12,787 INFO L470 AbstractCegarLoop]: Abstraction has 20059 states and 30828 transitions. [2022-01-10 18:47:12,787 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 18:47:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20059 states and 30828 transitions. [2022-01-10 18:47:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:47:12,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:12,791 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 18:47:12,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:47:12,791 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1669104796, now seen corresponding path program 1 times [2022-01-10 18:47:12,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:12,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622649191] [2022-01-10 18:47:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:12,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:12,860 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 18:47:12,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:12,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622649191] [2022-01-10 18:47:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622649191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:12,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:12,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:47:12,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755695293] [2022-01-10 18:47:12,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:12,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:47:12,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:12,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:47:12,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:47:12,862 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 18:47:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:14,796 INFO L93 Difference]: Finished difference Result 32497 states and 49960 transitions. [2022-01-10 18:47:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:47:14,797 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 18:47:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:14,822 INFO L225 Difference]: With dead ends: 32497 [2022-01-10 18:47:14,822 INFO L226 Difference]: Without dead ends: 17423 [2022-01-10 18:47:14,840 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 18:47:14,845 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 18:47:14,845 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 18:47:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17423 states. [2022-01-10 18:47:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17423 to 17423. [2022-01-10 18:47:16,830 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 18:47:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 26701 transitions. [2022-01-10 18:47:16,858 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 26701 transitions. Word has length 75 [2022-01-10 18:47:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:16,858 INFO L470 AbstractCegarLoop]: Abstraction has 17423 states and 26701 transitions. [2022-01-10 18:47:16,858 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 18:47:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 26701 transitions. [2022-01-10 18:47:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:47:16,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:16,862 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 18:47:16,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:47:16,862 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 638902962, now seen corresponding path program 1 times [2022-01-10 18:47:16,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572768809] [2022-01-10 18:47:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:16,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:17,003 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 18:47:17,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572768809] [2022-01-10 18:47:17,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572768809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:17,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:17,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:47:17,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619279554] [2022-01-10 18:47:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:17,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:47:17,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:47:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:47:17,007 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 18:47:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:47:19,667 INFO L93 Difference]: Finished difference Result 32471 states and 50461 transitions. [2022-01-10 18:47:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:47:19,668 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 18:47:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:47:19,699 INFO L225 Difference]: With dead ends: 32471 [2022-01-10 18:47:19,699 INFO L226 Difference]: Without dead ends: 23559 [2022-01-10 18:47:19,708 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 18:47:19,709 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 18:47:19,709 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 18:47:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23559 states. [2022-01-10 18:47:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23559 to 23557. [2022-01-10 18:47:22,177 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 18:47:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 36287 transitions. [2022-01-10 18:47:22,211 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 36287 transitions. Word has length 75 [2022-01-10 18:47:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:47:22,211 INFO L470 AbstractCegarLoop]: Abstraction has 23557 states and 36287 transitions. [2022-01-10 18:47:22,212 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 18:47:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 36287 transitions. [2022-01-10 18:47:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:47:22,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:47:22,213 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 18:47:22,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:47:22,214 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:47:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:47:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2097450985, now seen corresponding path program 1 times [2022-01-10 18:47:22,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:47:22,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106148809] [2022-01-10 18:47:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:47:22,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:47:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:47:22,393 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 18:47:22,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:47:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106148809] [2022-01-10 18:47:22,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106148809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:47:22,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:47:22,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:47:22,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381913615] [2022-01-10 18:47:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:47:22,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:47:22,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:47:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:47:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:47:22,395 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)