/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/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:35:46,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:35:46,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:35:46,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:35:46,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:35:46,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:35:46,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:35:46,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:35:46,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:35:46,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:35:46,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:35:46,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:35:46,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:35:46,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:35:46,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:35:46,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:35:46,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:35:46,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:35:46,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:35:46,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:35:46,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:35:46,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:35:46,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:35:46,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:35:46,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:35:46,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:35:46,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:35:46,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:35:46,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:35:46,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:35:46,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:35:46,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:35:46,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:35:46,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:35:46,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:35:46,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:35:46,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:35:46,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:35:46,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:35:46,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:35:46,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:35:46,259 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 18:35:46,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:35:46,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:35:46,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:35:46,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:35:46,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:35:46,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:35:46,286 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:35:46,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:35:46,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:35:46,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:35:46,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:35:46,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:35:46,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:35:46,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:35:46,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:35:46,290 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:35:46,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:35:46,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:35:46,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:35:46,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:35:46,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:35:46,449 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:35:46,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-01-10 18:35:46,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e17456ce/b5efc549386244f9af4142d25c84b445/FLAG77b4191a6 [2022-01-10 18:35:46,889 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:35:46,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2022-01-10 18:35:46,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e17456ce/b5efc549386244f9af4142d25c84b445/FLAG77b4191a6 [2022-01-10 18:35:46,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e17456ce/b5efc549386244f9af4142d25c84b445 [2022-01-10 18:35:46,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:35:46,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:35:46,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:35:46,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:35:46,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:35:46,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:35:46" (1/1) ... [2022-01-10 18:35:46,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6313a747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:46, skipping insertion in model container [2022-01-10 18:35:46,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:35:46" (1/1) ... [2022-01-10 18:35:46,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:35:46,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:35:47,121 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/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-01-10 18:35:47,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:35:47,129 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:35:47,168 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/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2022-01-10 18:35:47,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:35:47,181 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:35:47,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47 WrapperNode [2022-01-10 18:35:47,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:35:47,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:35:47,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:35:47,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:35:47,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,221 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 372 [2022-01-10 18:35:47,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:35:47,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:35:47,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:35:47,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:35:47,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:35:47,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:35:47,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:35:47,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:35:47,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:47,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:35:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:35:47,288 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 18:35:47,306 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 18:35:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:35:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:35:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:35:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:35:47,408 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:35:47,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:35:47,736 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:35:47,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:35:47,742 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:35:47,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:35:47 BoogieIcfgContainer [2022-01-10 18:35:47,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:35:47,744 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:35:47,744 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:35:47,745 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:35:47,747 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:35:47" (1/1) ... [2022-01-10 18:35:48,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:35:48 BasicIcfg [2022-01-10 18:35:48,071 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:35:48,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:35:48,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:35:48,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:35:48,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:35:46" (1/4) ... [2022-01-10 18:35:48,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3c4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:35:48, skipping insertion in model container [2022-01-10 18:35:48,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:35:47" (2/4) ... [2022-01-10 18:35:48,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3c4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:35:48, skipping insertion in model container [2022-01-10 18:35:48,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:35:47" (3/4) ... [2022-01-10 18:35:48,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e3c4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:35:48, skipping insertion in model container [2022-01-10 18:35:48,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:35:48" (4/4) ... [2022-01-10 18:35:48,080 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.cTransformedIcfg [2022-01-10 18:35:48,084 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:35:48,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:35:48,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:35:48,123 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 18:35:48,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:35:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 121 states have internal predecessors, (205), 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 18:35:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 18:35:48,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:48,143 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] [2022-01-10 18:35:48,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -337193788, now seen corresponding path program 1 times [2022-01-10 18:35:48,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:48,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222763093] [2022-01-10 18:35:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:48,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:48,368 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 18:35:48,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:48,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222763093] [2022-01-10 18:35:48,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222763093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:48,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:48,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:35:48,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709683607] [2022-01-10 18:35:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:48,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:35:48,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:35:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:35:48,398 INFO L87 Difference]: Start difference. First operand has 122 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 121 states have internal predecessors, (205), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 18:35:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:48,428 INFO L93 Difference]: Finished difference Result 207 states and 340 transitions. [2022-01-10 18:35:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:35:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2022-01-10 18:35:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:48,439 INFO L225 Difference]: With dead ends: 207 [2022-01-10 18:35:48,439 INFO L226 Difference]: Without dead ends: 118 [2022-01-10 18:35:48,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:35:48,445 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:35:48,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-10 18:35:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-01-10 18:35:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 117 states have internal predecessors, (198), 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 18:35:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 198 transitions. [2022-01-10 18:35:48,483 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 198 transitions. Word has length 33 [2022-01-10 18:35:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:48,484 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 198 transitions. [2022-01-10 18:35:48,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 18:35:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 198 transitions. [2022-01-10 18:35:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 18:35:48,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:48,488 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] [2022-01-10 18:35:48,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:35:48,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash -591930333, now seen corresponding path program 1 times [2022-01-10 18:35:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:48,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262884695] [2022-01-10 18:35:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:48,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:48,655 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 18:35:48,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262884695] [2022-01-10 18:35:48,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262884695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:48,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:48,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:35:48,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921278502] [2022-01-10 18:35:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:48,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:35:48,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:35:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:35:48,658 INFO L87 Difference]: Start difference. First operand 118 states and 198 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 18:35:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:48,744 INFO L93 Difference]: Finished difference Result 202 states and 330 transitions. [2022-01-10 18:35:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:35:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2022-01-10 18:35:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:48,745 INFO L225 Difference]: With dead ends: 202 [2022-01-10 18:35:48,745 INFO L226 Difference]: Without dead ends: 118 [2022-01-10 18:35:48,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:35:48,747 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:35:48,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 749 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-01-10 18:35:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-01-10 18:35:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.4188034188034189) internal successors, (166), 117 states have internal predecessors, (166), 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 18:35:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-01-10 18:35:48,753 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 33 [2022-01-10 18:35:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:48,753 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-01-10 18:35:48,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 18:35:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-01-10 18:35:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:35:48,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:48,755 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] [2022-01-10 18:35:48,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:35:48,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1635506767, now seen corresponding path program 1 times [2022-01-10 18:35:48,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465855779] [2022-01-10 18:35:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:48,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:48,868 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 18:35:48,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:48,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465855779] [2022-01-10 18:35:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465855779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:48,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:48,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:35:48,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070347511] [2022-01-10 18:35:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:48,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:35:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:35:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:35:48,870 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:35:50,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:35:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:51,040 INFO L93 Difference]: Finished difference Result 266 states and 402 transitions. [2022-01-10 18:35:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:35:51,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 18:35:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:51,053 INFO L225 Difference]: With dead ends: 266 [2022-01-10 18:35:51,053 INFO L226 Difference]: Without dead ends: 186 [2022-01-10 18:35:51,053 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 18:35:51,054 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 116 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:35:51,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 389 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:35:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-10 18:35:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2022-01-10 18:35:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4863387978142077) internal successors, (272), 183 states have internal predecessors, (272), 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 18:35:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2022-01-10 18:35:51,062 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 64 [2022-01-10 18:35:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:51,063 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2022-01-10 18:35:51,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:35:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2022-01-10 18:35:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:35:51,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:51,064 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 18:35:51,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:35:51,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1793534533, now seen corresponding path program 1 times [2022-01-10 18:35:51,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:51,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244643630] [2022-01-10 18:35:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:51,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:51,212 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 18:35:51,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244643630] [2022-01-10 18:35:51,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244643630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:51,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:51,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:35:51,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118237623] [2022-01-10 18:35:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:51,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:35:51,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:35:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:35:51,216 INFO L87 Difference]: Start difference. First operand 184 states and 272 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 18:35:51,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:51,235 INFO L93 Difference]: Finished difference Result 452 states and 700 transitions. [2022-01-10 18:35:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:35:51,235 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 18:35:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:51,238 INFO L225 Difference]: With dead ends: 452 [2022-01-10 18:35:51,238 INFO L226 Difference]: Without dead ends: 306 [2022-01-10 18:35:51,242 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 18:35:51,248 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 111 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 380 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 18:35:51,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 380 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:51,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-10 18:35:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2022-01-10 18:35:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.528052805280528) internal successors, (463), 303 states have internal predecessors, (463), 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 18:35:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2022-01-10 18:35:51,269 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 65 [2022-01-10 18:35:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:51,269 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2022-01-10 18:35:51,269 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 18:35:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2022-01-10 18:35:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:35:51,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:51,270 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] [2022-01-10 18:35:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:35:51,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2004577934, now seen corresponding path program 1 times [2022-01-10 18:35:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239690963] [2022-01-10 18:35:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:51,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:51,379 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 18:35:51,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239690963] [2022-01-10 18:35:51,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239690963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:51,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:51,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:35:51,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908616913] [2022-01-10 18:35:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:51,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:35:51,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:35:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:35:51,381 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 18:35:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:51,402 INFO L93 Difference]: Finished difference Result 788 states and 1233 transitions. [2022-01-10 18:35:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:35:51,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-01-10 18:35:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:51,405 INFO L225 Difference]: With dead ends: 788 [2022-01-10 18:35:51,405 INFO L226 Difference]: Without dead ends: 522 [2022-01-10 18:35:51,407 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 18:35:51,409 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 106 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 371 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 18:35:51,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 371 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-10 18:35:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2022-01-10 18:35:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.5472061657032756) internal successors, (803), 519 states have internal predecessors, (803), 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 18:35:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 803 transitions. [2022-01-10 18:35:51,434 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 803 transitions. Word has length 66 [2022-01-10 18:35:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:51,436 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 803 transitions. [2022-01-10 18:35:51,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 18:35:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 803 transitions. [2022-01-10 18:35:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:35:51,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:51,442 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 18:35:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:35:51,443 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -51257244, now seen corresponding path program 1 times [2022-01-10 18:35:51,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:51,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431455778] [2022-01-10 18:35:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:51,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:51,562 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 18:35:51,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431455778] [2022-01-10 18:35:51,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431455778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:51,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:51,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:35:51,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370449282] [2022-01-10 18:35:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:51,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:35:51,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:35:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:35:51,563 INFO L87 Difference]: Start difference. First operand 520 states and 803 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 18:35:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:51,583 INFO L93 Difference]: Finished difference Result 1388 states and 2173 transitions. [2022-01-10 18:35:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:35:51,584 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 18:35:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:51,586 INFO L225 Difference]: With dead ends: 1388 [2022-01-10 18:35:51,586 INFO L226 Difference]: Without dead ends: 906 [2022-01-10 18:35:51,587 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 18:35:51,588 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 101 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 362 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 18:35:51,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-01-10 18:35:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2022-01-10 18:35:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 1.5492801771871538) internal successors, (1399), 903 states have internal predecessors, (1399), 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 18:35:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1399 transitions. [2022-01-10 18:35:51,606 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1399 transitions. Word has length 67 [2022-01-10 18:35:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:51,606 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1399 transitions. [2022-01-10 18:35:51,606 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 18:35:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1399 transitions. [2022-01-10 18:35:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:35:51,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:51,608 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] [2022-01-10 18:35:51,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:35:51,609 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash -38785587, now seen corresponding path program 1 times [2022-01-10 18:35:51,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:51,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319382762] [2022-01-10 18:35:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:51,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:51,700 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 18:35:51,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:51,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319382762] [2022-01-10 18:35:51,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319382762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:51,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:51,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:35:51,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805936852] [2022-01-10 18:35:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:51,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:35:51,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:35:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:35:51,702 INFO L87 Difference]: Start difference. First operand 904 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:35:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:51,724 INFO L93 Difference]: Finished difference Result 2444 states and 3801 transitions. [2022-01-10 18:35:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:35:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-01-10 18:35:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:51,730 INFO L225 Difference]: With dead ends: 2444 [2022-01-10 18:35:51,730 INFO L226 Difference]: Without dead ends: 1578 [2022-01-10 18:35:51,731 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 18:35:51,732 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 96 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 353 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 18:35:51,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:35:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-01-10 18:35:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1576. [2022-01-10 18:35:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.5384126984126985) internal successors, (2423), 1575 states have internal predecessors, (2423), 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 18:35:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2423 transitions. [2022-01-10 18:35:51,758 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2423 transitions. Word has length 68 [2022-01-10 18:35:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:51,759 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 2423 transitions. [2022-01-10 18:35:51,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:35:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2423 transitions. [2022-01-10 18:35:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:35:51,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:51,760 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 18:35:51,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:35:51,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 920529283, now seen corresponding path program 1 times [2022-01-10 18:35:51,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890215876] [2022-01-10 18:35:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:51,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:51,947 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 18:35:51,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:51,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890215876] [2022-01-10 18:35:51,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890215876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:51,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:51,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:35:51,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618970294] [2022-01-10 18:35:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:51,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:35:51,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:35:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:35:51,949 INFO L87 Difference]: Start difference. First operand 1576 states and 2423 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 18:35:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:53,248 INFO L93 Difference]: Finished difference Result 16318 states and 25074 transitions. [2022-01-10 18:35:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:35:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 18:35:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:53,291 INFO L225 Difference]: With dead ends: 16318 [2022-01-10 18:35:53,291 INFO L226 Difference]: Without dead ends: 14780 [2022-01-10 18:35:53,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:35:53,298 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 1075 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:35:53,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2289 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:35:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14780 states. [2022-01-10 18:35:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 7224. [2022-01-10 18:35:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 7223 states have (on average 1.5338502007476118) internal successors, (11079), 7223 states have internal predecessors, (11079), 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 18:35:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 11079 transitions. [2022-01-10 18:35:53,692 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 11079 transitions. Word has length 69 [2022-01-10 18:35:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:53,692 INFO L470 AbstractCegarLoop]: Abstraction has 7224 states and 11079 transitions. [2022-01-10 18:35:53,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 18:35:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 11079 transitions. [2022-01-10 18:35:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:35:53,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:53,695 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 18:35:53,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:35:53,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1700028913, now seen corresponding path program 1 times [2022-01-10 18:35:53,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:53,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736021304] [2022-01-10 18:35:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:53,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:54,048 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 18:35:54,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:54,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736021304] [2022-01-10 18:35:54,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736021304] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:54,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:54,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:35:54,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654076718] [2022-01-10 18:35:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:54,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:35:54,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:35:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:35:54,050 INFO L87 Difference]: Start difference. First operand 7224 states and 11079 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 18:35:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:35:57,443 INFO L93 Difference]: Finished difference Result 44644 states and 68557 transitions. [2022-01-10 18:35:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:35:57,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 18:35:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:35:57,549 INFO L225 Difference]: With dead ends: 44644 [2022-01-10 18:35:57,549 INFO L226 Difference]: Without dead ends: 37458 [2022-01-10 18:35:57,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:35:57,564 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1202 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:35:57,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 1927 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:35:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37458 states. [2022-01-10 18:35:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37458 to 14408. [2022-01-10 18:35:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14408 states, 14407 states have (on average 1.5130839175400848) internal successors, (21799), 14407 states have internal predecessors, (21799), 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 18:35:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 21799 transitions. [2022-01-10 18:35:59,876 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 21799 transitions. Word has length 70 [2022-01-10 18:35:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:35:59,876 INFO L470 AbstractCegarLoop]: Abstraction has 14408 states and 21799 transitions. [2022-01-10 18:35:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 18:35:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 21799 transitions. [2022-01-10 18:35:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:35:59,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:35:59,877 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] [2022-01-10 18:35:59,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:35:59,877 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:35:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:35:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1130661337, now seen corresponding path program 1 times [2022-01-10 18:35:59,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:35:59,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980749249] [2022-01-10 18:35:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:35:59,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:35:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:35:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:35:59,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:35:59,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980749249] [2022-01-10 18:35:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980749249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:35:59,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:35:59,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:35:59,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869658403] [2022-01-10 18:35:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:35:59,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:35:59,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:35:59,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:35:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:35:59,963 INFO L87 Difference]: Start difference. First operand 14408 states and 21799 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 18:36:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:03,833 INFO L93 Difference]: Finished difference Result 27986 states and 42186 transitions. [2022-01-10 18:36:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:36:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2022-01-10 18:36:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:03,873 INFO L225 Difference]: With dead ends: 27986 [2022-01-10 18:36:03,874 INFO L226 Difference]: Without dead ends: 27984 [2022-01-10 18:36:03,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:36:03,882 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 480 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:03,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 802 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27984 states. [2022-01-10 18:36:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27984 to 15368. [2022-01-10 18:36:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15367 states have (on average 1.4810307802433786) internal successors, (22759), 15367 states have internal predecessors, (22759), 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 18:36:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 22759 transitions. [2022-01-10 18:36:06,150 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 22759 transitions. Word has length 71 [2022-01-10 18:36:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:06,150 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 22759 transitions. [2022-01-10 18:36:06,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 18:36:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 22759 transitions. [2022-01-10 18:36:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:36:06,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:06,151 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 18:36:06,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:36:06,151 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash 722935093, now seen corresponding path program 1 times [2022-01-10 18:36:06,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:06,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714515669] [2022-01-10 18:36:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:06,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:06,263 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 18:36:06,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:06,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714515669] [2022-01-10 18:36:06,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714515669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:06,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:06,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:06,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146718800] [2022-01-10 18:36:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:06,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:06,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:06,265 INFO L87 Difference]: Start difference. First operand 15368 states and 22759 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 18:36:08,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:36:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:11,699 INFO L93 Difference]: Finished difference Result 38078 states and 56443 transitions. [2022-01-10 18:36:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:11,700 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 18:36:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:11,739 INFO L225 Difference]: With dead ends: 38078 [2022-01-10 18:36:11,739 INFO L226 Difference]: Without dead ends: 22748 [2022-01-10 18:36:11,756 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 18:36:11,756 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 87 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:11,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 18:36:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22748 states. [2022-01-10 18:36:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22748 to 22746. [2022-01-10 18:36:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22746 states, 22745 states have (on average 1.4755330841943284) internal successors, (33561), 22745 states have internal predecessors, (33561), 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 18:36:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22746 states to 22746 states and 33561 transitions. [2022-01-10 18:36:15,191 INFO L78 Accepts]: Start accepts. Automaton has 22746 states and 33561 transitions. Word has length 72 [2022-01-10 18:36:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:15,191 INFO L470 AbstractCegarLoop]: Abstraction has 22746 states and 33561 transitions. [2022-01-10 18:36:15,192 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 18:36:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22746 states and 33561 transitions. [2022-01-10 18:36:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 18:36:15,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:15,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:15,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:36:15,202 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1391560445, now seen corresponding path program 1 times [2022-01-10 18:36:15,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:15,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401130376] [2022-01-10 18:36:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:15,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:36:15,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:15,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401130376] [2022-01-10 18:36:15,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401130376] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:36:15,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970158350] [2022-01-10 18:36:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:15,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:36:15,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:36:15,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:36:15,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:36:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:16,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-10 18:36:16,490 INFO L286 TraceCheckSpWp]: Computing forward predicates...