/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/loop-invgen/apache-get-tag.i.p+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:24:44,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:24:44,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:24:44,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:24:44,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:24:44,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:24:44,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:24:44,278 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 14:24:44,303 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:24:44,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:24:44,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:24:44,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:24:44,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:24:44,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:24:44,305 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:24:44,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:24:44,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:24:44,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:24:44,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:24:44,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:24:44,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:24:44,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:24:44,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:24:44,308 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:24:44,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:24:44,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:24:44,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:24:44,309 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:24:44,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:24:44,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:24:44,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:24:44,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:24:44,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:24:44,518 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:24:44,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c [2022-01-10 14:24:44,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365c04752/d64207531e0241f9946e4f9a8c5d82d8/FLAG587b8658d [2022-01-10 14:24:45,039 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:24:45,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c [2022-01-10 14:24:45,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365c04752/d64207531e0241f9946e4f9a8c5d82d8/FLAG587b8658d [2022-01-10 14:24:45,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365c04752/d64207531e0241f9946e4f9a8c5d82d8 [2022-01-10 14:24:45,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:24:45,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:24:45,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:24:45,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:24:45,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:24:45,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c24b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45, skipping insertion in model container [2022-01-10 14:24:45,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:24:45,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:24:45,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[1000,1013] [2022-01-10 14:24:45,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[1215,1228] [2022-01-10 14:24:45,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[83573,83586] [2022-01-10 14:24:45,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[83794,83807] [2022-01-10 14:24:45,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84257,84270] [2022-01-10 14:24:45,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84478,84491] [2022-01-10 14:24:45,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84801,84814] [2022-01-10 14:24:45,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85022,85035] [2022-01-10 14:24:45,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85521,85534] [2022-01-10 14:24:45,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85742,85755] [2022-01-10 14:24:45,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86050,86063] [2022-01-10 14:24:45,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86271,86284] [2022-01-10 14:24:45,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86594,86607] [2022-01-10 14:24:45,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86815,86828] [2022-01-10 14:24:45,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[87258,87271] [2022-01-10 14:24:45,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[87479,87492] [2022-01-10 14:24:45,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:24:45,649 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:24:45,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[1000,1013] [2022-01-10 14:24:45,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[1215,1228] [2022-01-10 14:24:45,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[83573,83586] [2022-01-10 14:24:45,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[83794,83807] [2022-01-10 14:24:45,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84257,84270] [2022-01-10 14:24:45,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84478,84491] [2022-01-10 14:24:45,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84801,84814] [2022-01-10 14:24:45,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85022,85035] [2022-01-10 14:24:45,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85521,85534] [2022-01-10 14:24:45,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[85742,85755] [2022-01-10 14:24:45,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86050,86063] [2022-01-10 14:24:45,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86271,86284] [2022-01-10 14:24:45,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86594,86607] [2022-01-10 14:24:45,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[86815,86828] [2022-01-10 14:24:45,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[87258,87271] [2022-01-10 14:24:45,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[87479,87492] [2022-01-10 14:24:45,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:24:45,852 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:24:45,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45 WrapperNode [2022-01-10 14:24:45,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:24:45,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:24:45,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:24:45,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:24:45,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,952 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2954 [2022-01-10 14:24:45,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:24:45,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:24:45,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:24:45,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:24:45,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:45,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:46,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:46,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:24:46,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:24:46,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:24:46,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:24:46,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (1/1) ... [2022-01-10 14:24:46,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:24:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:24:46,047 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 14:24:46,068 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 14:24:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:24:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:24:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:24:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:24:46,310 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:24:46,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:24:47,425 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:24:47,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:24:47,434 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 14:24:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:47 BoogieIcfgContainer [2022-01-10 14:24:47,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:24:47,436 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:24:47,436 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:24:47,437 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:24:47,439 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:47" (1/1) ... [2022-01-10 14:24:47,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:24:47 BasicIcfg [2022-01-10 14:24:47,763 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:24:47,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:24:47,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:24:47,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:24:47,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:24:45" (1/4) ... [2022-01-10 14:24:47,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e87f515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:47, skipping insertion in model container [2022-01-10 14:24:47,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:24:45" (2/4) ... [2022-01-10 14:24:47,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e87f515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:24:47, skipping insertion in model container [2022-01-10 14:24:47,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:24:47" (3/4) ... [2022-01-10 14:24:47,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e87f515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:24:47, skipping insertion in model container [2022-01-10 14:24:47,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:24:47" (4/4) ... [2022-01-10 14:24:47,768 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+sep-reducer.cTransformedIcfg [2022-01-10 14:24:47,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:24:47,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-01-10 14:24:47,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:24:47,815 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 14:24:47,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-01-10 14:24:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 475 states, 458 states have (on average 1.9672489082969433) internal successors, (901), 474 states have internal predecessors, (901), 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 14:24:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 14:24:47,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:47,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:47,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1357103806, now seen corresponding path program 1 times [2022-01-10 14:24:47,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578907345] [2022-01-10 14:24:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:47,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:48,056 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 14:24:48,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578907345] [2022-01-10 14:24:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578907345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:48,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:48,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:24:48,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296729115] [2022-01-10 14:24:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:48,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:24:48,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:24:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:24:48,089 INFO L87 Difference]: Start difference. First operand has 475 states, 458 states have (on average 1.9672489082969433) internal successors, (901), 474 states have internal predecessors, (901), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:24:48,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:48,778 INFO L93 Difference]: Finished difference Result 496 states and 920 transitions. [2022-01-10 14:24:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:24:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-01-10 14:24:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:48,788 INFO L225 Difference]: With dead ends: 496 [2022-01-10 14:24:48,788 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 14:24:48,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:24:48,793 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 30 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:48,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2091 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 14:24:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 14:24:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 14:24:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2771929824561403) internal successors, (364), 300 states have internal predecessors, (364), 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 14:24:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 364 transitions. [2022-01-10 14:24:48,839 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 364 transitions. Word has length 7 [2022-01-10 14:24:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:48,839 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 364 transitions. [2022-01-10 14:24:48,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:24:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 364 transitions. [2022-01-10 14:24:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 14:24:48,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:48,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:48,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:24:48,840 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash -879451729, now seen corresponding path program 1 times [2022-01-10 14:24:48,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:48,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348277754] [2022-01-10 14:24:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:48,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:48,945 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 14:24:48,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348277754] [2022-01-10 14:24:48,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348277754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:48,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:48,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:24:48,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938908520] [2022-01-10 14:24:48,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:48,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:24:48,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:24:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:24:48,954 INFO L87 Difference]: Start difference. First operand 301 states and 364 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:24:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:49,300 INFO L93 Difference]: Finished difference Result 304 states and 366 transitions. [2022-01-10 14:24:49,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:24:49,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-01-10 14:24:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:49,302 INFO L225 Difference]: With dead ends: 304 [2022-01-10 14:24:49,302 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 14:24:49,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:24:49,303 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 10 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:49,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 747 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 14:24:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 14:24:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 14:24:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2756183745583038) internal successors, (361), 298 states have internal predecessors, (361), 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 14:24:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 361 transitions. [2022-01-10 14:24:49,310 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 361 transitions. Word has length 8 [2022-01-10 14:24:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:49,310 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 361 transitions. [2022-01-10 14:24:49,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:24:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 361 transitions. [2022-01-10 14:24:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:24:49,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:49,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:49,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:24:49,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1101661551, now seen corresponding path program 1 times [2022-01-10 14:24:49,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:49,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469694706] [2022-01-10 14:24:49,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:49,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:49,427 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 14:24:49,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469694706] [2022-01-10 14:24:49,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469694706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:49,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:49,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 14:24:49,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117967078] [2022-01-10 14:24:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:49,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 14:24:49,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 14:24:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:24:49,429 INFO L87 Difference]: Start difference. First operand 299 states and 361 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 14:24:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:50,202 INFO L93 Difference]: Finished difference Result 306 states and 367 transitions. [2022-01-10 14:24:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:24:50,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2022-01-10 14:24:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:50,204 INFO L225 Difference]: With dead ends: 306 [2022-01-10 14:24:50,204 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 14:24:50,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:50,205 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 15 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:50,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 852 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 14:24:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 14:24:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 14:24:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2736842105263158) internal successors, (363), 300 states have internal predecessors, (363), 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 14:24:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 363 transitions. [2022-01-10 14:24:50,212 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 363 transitions. Word has length 11 [2022-01-10 14:24:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:50,212 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 363 transitions. [2022-01-10 14:24:50,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 14:24:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 363 transitions. [2022-01-10 14:24:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 14:24:50,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:50,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:50,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:24:50,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:50,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 208233532, now seen corresponding path program 1 times [2022-01-10 14:24:50,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:50,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740645831] [2022-01-10 14:24:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:50,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:50,379 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 14:24:50,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:50,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740645831] [2022-01-10 14:24:50,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740645831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:50,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:50,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:24:50,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749314304] [2022-01-10 14:24:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:50,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:24:50,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:24:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:50,381 INFO L87 Difference]: Start difference. First operand 301 states and 363 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 14:24:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:51,209 INFO L93 Difference]: Finished difference Result 301 states and 363 transitions. [2022-01-10 14:24:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:24:51,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 12 [2022-01-10 14:24:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:51,211 INFO L225 Difference]: With dead ends: 301 [2022-01-10 14:24:51,211 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:51,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:24:51,212 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 23 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:51,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 856 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 14:24:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2704626334519573) internal successors, (357), 295 states have internal predecessors, (357), 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 14:24:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 357 transitions. [2022-01-10 14:24:51,217 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 357 transitions. Word has length 12 [2022-01-10 14:24:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:51,218 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 357 transitions. [2022-01-10 14:24:51,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 14:24:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 357 transitions. [2022-01-10 14:24:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 14:24:51,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:51,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:51,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:24:51,218 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash 894112894, now seen corresponding path program 1 times [2022-01-10 14:24:51,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:51,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908131602] [2022-01-10 14:24:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:51,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:51,351 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 14:24:51,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:51,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908131602] [2022-01-10 14:24:51,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908131602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:51,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:51,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:24:51,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202381920] [2022-01-10 14:24:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:51,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:24:51,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:24:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:51,352 INFO L87 Difference]: Start difference. First operand 296 states and 357 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 14:24:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:52,239 INFO L93 Difference]: Finished difference Result 300 states and 360 transitions. [2022-01-10 14:24:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:24:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2022-01-10 14:24:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:52,241 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:24:52,241 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:52,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:24:52,242 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 7 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:52,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 869 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 14:24:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2669039145907472) internal successors, (356), 295 states have internal predecessors, (356), 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 14:24:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 356 transitions. [2022-01-10 14:24:52,246 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 356 transitions. Word has length 15 [2022-01-10 14:24:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:52,246 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 356 transitions. [2022-01-10 14:24:52,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 14:24:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 356 transitions. [2022-01-10 14:24:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 14:24:52,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:52,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:24:52,247 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1193088556, now seen corresponding path program 1 times [2022-01-10 14:24:52,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:52,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442677564] [2022-01-10 14:24:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:52,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:52,375 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 14:24:52,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:52,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442677564] [2022-01-10 14:24:52,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442677564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:52,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:52,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:24:52,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776507645] [2022-01-10 14:24:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:52,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:24:52,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:24:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:52,377 INFO L87 Difference]: Start difference. First operand 296 states and 356 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 14:24:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:53,168 INFO L93 Difference]: Finished difference Result 300 states and 359 transitions. [2022-01-10 14:24:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:24:53,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 19 [2022-01-10 14:24:53,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:53,169 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:24:53,169 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:53,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:24:53,170 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 298 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:53,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 188 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 14:24:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2633451957295374) internal successors, (355), 295 states have internal predecessors, (355), 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 14:24:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 355 transitions. [2022-01-10 14:24:53,174 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 355 transitions. Word has length 19 [2022-01-10 14:24:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:53,174 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 355 transitions. [2022-01-10 14:24:53,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 14:24:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 355 transitions. [2022-01-10 14:24:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 14:24:53,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:53,175 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] [2022-01-10 14:24:53,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:24:53,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1358420542, now seen corresponding path program 1 times [2022-01-10 14:24:53,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:53,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845726342] [2022-01-10 14:24:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:53,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:53,375 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 14:24:53,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:53,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845726342] [2022-01-10 14:24:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845726342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:53,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 14:24:53,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751804215] [2022-01-10 14:24:53,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:53,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 14:24:53,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 14:24:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:24:53,376 INFO L87 Difference]: Start difference. First operand 296 states and 355 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 14:24:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:54,860 INFO L93 Difference]: Finished difference Result 300 states and 358 transitions. [2022-01-10 14:24:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 14:24:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 23 [2022-01-10 14:24:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:54,862 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:24:54,862 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:54,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-10 14:24:54,863 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 42 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:54,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 923 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 14:24:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:54,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2597864768683273) internal successors, (354), 295 states have internal predecessors, (354), 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 14:24:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 354 transitions. [2022-01-10 14:24:54,867 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 354 transitions. Word has length 23 [2022-01-10 14:24:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:54,867 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 354 transitions. [2022-01-10 14:24:54,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 14:24:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 354 transitions. [2022-01-10 14:24:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 14:24:54,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:54,868 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] [2022-01-10 14:24:54,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:24:54,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:54,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1885697004, now seen corresponding path program 1 times [2022-01-10 14:24:54,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:54,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278938863] [2022-01-10 14:24:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:54,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:55,122 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 14:24:55,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278938863] [2022-01-10 14:24:55,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278938863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:55,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:55,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 14:24:55,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144036706] [2022-01-10 14:24:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:55,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 14:24:55,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 14:24:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:24:55,124 INFO L87 Difference]: Start difference. First operand 296 states and 354 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 14:24:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:56,928 INFO L93 Difference]: Finished difference Result 300 states and 357 transitions. [2022-01-10 14:24:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 14:24:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 27 [2022-01-10 14:24:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:56,932 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:24:56,932 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:56,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:24:56,933 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 51 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:56,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 950 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 14:24:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 295 states have internal predecessors, (353), 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 14:24:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 353 transitions. [2022-01-10 14:24:56,941 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 353 transitions. Word has length 27 [2022-01-10 14:24:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:56,941 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 353 transitions. [2022-01-10 14:24:56,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 14:24:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 353 transitions. [2022-01-10 14:24:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 14:24:56,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:56,942 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] [2022-01-10 14:24:56,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:24:56,942 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1037090204, now seen corresponding path program 1 times [2022-01-10 14:24:56,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609348989] [2022-01-10 14:24:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:56,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:57,200 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 14:24:57,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:57,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609348989] [2022-01-10 14:24:57,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609348989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:57,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:57,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 14:24:57,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555582040] [2022-01-10 14:24:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:57,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 14:24:57,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 14:24:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:24:57,202 INFO L87 Difference]: Start difference. First operand 296 states and 353 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 14:24:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:59,275 INFO L93 Difference]: Finished difference Result 300 states and 356 transitions. [2022-01-10 14:24:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 14:24:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 31 [2022-01-10 14:24:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:59,276 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:24:59,277 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:24:59,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-01-10 14:24:59,277 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 76 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:59,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 977 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 14:24:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:24:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:24:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 295 states have internal predecessors, (352), 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 14:24:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 352 transitions. [2022-01-10 14:24:59,281 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 352 transitions. Word has length 31 [2022-01-10 14:24:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 352 transitions. [2022-01-10 14:24:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 14:24:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 352 transitions. [2022-01-10 14:24:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 14:24:59,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:59,282 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] [2022-01-10 14:24:59,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 14:24:59,283 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:24:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -873254882, now seen corresponding path program 1 times [2022-01-10 14:24:59,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:59,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398365369] [2022-01-10 14:24:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:59,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:59,438 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 14:24:59,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398365369] [2022-01-10 14:24:59,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398365369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:24:59,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:24:59,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:24:59,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228800518] [2022-01-10 14:24:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:24:59,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:24:59,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:24:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:24:59,439 INFO L87 Difference]: Start difference. First operand 296 states and 352 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 14:25:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:00,263 INFO L93 Difference]: Finished difference Result 300 states and 355 transitions. [2022-01-10 14:25:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:25:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 35 [2022-01-10 14:25:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:00,265 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:00,265 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:00,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:25:00,266 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 295 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:00,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 188 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 14:25:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:00,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2491103202846976) internal successors, (351), 295 states have internal predecessors, (351), 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 14:25:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 351 transitions. [2022-01-10 14:25:00,270 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 351 transitions. Word has length 35 [2022-01-10 14:25:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:00,270 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 351 transitions. [2022-01-10 14:25:00,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 14:25:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 351 transitions. [2022-01-10 14:25:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 14:25:00,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:00,271 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] [2022-01-10 14:25:00,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:25:00,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -500617768, now seen corresponding path program 1 times [2022-01-10 14:25:00,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262734398] [2022-01-10 14:25:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:00,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:00,593 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 14:25:00,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:00,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262734398] [2022-01-10 14:25:00,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262734398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:00,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:00,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 14:25:00,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920687970] [2022-01-10 14:25:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:00,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 14:25:00,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 14:25:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-01-10 14:25:00,594 INFO L87 Difference]: Start difference. First operand 296 states and 351 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 14:25:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:03,273 INFO L93 Difference]: Finished difference Result 300 states and 354 transitions. [2022-01-10 14:25:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:25:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 39 [2022-01-10 14:25:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:03,274 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:03,274 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:03,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-01-10 14:25:03,275 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 78 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:03,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1031 Invalid, 3430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3404 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 14:25:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2455516014234875) internal successors, (350), 295 states have internal predecessors, (350), 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 14:25:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2022-01-10 14:25:03,280 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 39 [2022-01-10 14:25:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2022-01-10 14:25:03,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 14:25:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2022-01-10 14:25:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 14:25:03,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:03,281 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] [2022-01-10 14:25:03,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:25:03,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1565080466, now seen corresponding path program 1 times [2022-01-10 14:25:03,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:03,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688875407] [2022-01-10 14:25:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:03,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:03,439 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 14:25:03,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:03,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688875407] [2022-01-10 14:25:03,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688875407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:03,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:03,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:25:03,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13077178] [2022-01-10 14:25:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:03,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:25:03,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:25:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:25:03,441 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 14:25:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:04,113 INFO L93 Difference]: Finished difference Result 300 states and 353 transitions. [2022-01-10 14:25:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:25:04,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2022-01-10 14:25:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:04,115 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:04,115 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:04,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:25:04,116 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 294 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:04,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 151 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 14:25:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2419928825622777) internal successors, (349), 295 states have internal predecessors, (349), 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 14:25:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 349 transitions. [2022-01-10 14:25:04,120 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 349 transitions. Word has length 43 [2022-01-10 14:25:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:04,120 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 349 transitions. [2022-01-10 14:25:04,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 14:25:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 349 transitions. [2022-01-10 14:25:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 14:25:04,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:04,121 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] [2022-01-10 14:25:04,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:25:04,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1714726580, now seen corresponding path program 1 times [2022-01-10 14:25:04,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:04,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508723477] [2022-01-10 14:25:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:04,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:04,537 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 14:25:04,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:04,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508723477] [2022-01-10 14:25:04,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508723477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:04,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:04,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 14:25:04,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399357193] [2022-01-10 14:25:04,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:04,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 14:25:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 14:25:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-01-10 14:25:04,539 INFO L87 Difference]: Start difference. First operand 296 states and 349 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 14:25:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:07,998 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2022-01-10 14:25:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 14:25:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 47 [2022-01-10 14:25:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:07,999 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:07,999 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:08,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2022-01-10 14:25:08,000 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 96 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 3990 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 4022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:08,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1085 Invalid, 4022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3990 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 14:25:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2384341637010676) internal successors, (348), 295 states have internal predecessors, (348), 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 14:25:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 348 transitions. [2022-01-10 14:25:08,013 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 348 transitions. Word has length 47 [2022-01-10 14:25:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:08,014 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 348 transitions. [2022-01-10 14:25:08,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 14:25:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 348 transitions. [2022-01-10 14:25:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 14:25:08,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:08,017 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] [2022-01-10 14:25:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 14:25:08,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -131627258, now seen corresponding path program 1 times [2022-01-10 14:25:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096611026] [2022-01-10 14:25:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:08,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:08,531 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 14:25:08,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096611026] [2022-01-10 14:25:08,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096611026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:08,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:08,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 14:25:08,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995465398] [2022-01-10 14:25:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 14:25:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 14:25:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-01-10 14:25:08,533 INFO L87 Difference]: Start difference. First operand 296 states and 348 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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 14:25:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:12,226 INFO L93 Difference]: Finished difference Result 300 states and 351 transitions. [2022-01-10 14:25:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 14:25:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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 51 [2022-01-10 14:25:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:12,228 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:12,228 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:12,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 14:25:12,228 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 73 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 4346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:12,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1112 Invalid, 4346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 4323 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 14:25:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2348754448398576) internal successors, (347), 295 states have internal predecessors, (347), 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 14:25:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 347 transitions. [2022-01-10 14:25:12,232 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 347 transitions. Word has length 51 [2022-01-10 14:25:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:12,233 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 347 transitions. [2022-01-10 14:25:12,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 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 14:25:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 347 transitions. [2022-01-10 14:25:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 14:25:12,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:12,233 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] [2022-01-10 14:25:12,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 14:25:12,233 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash -589970240, now seen corresponding path program 1 times [2022-01-10 14:25:12,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:12,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613333700] [2022-01-10 14:25:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:12,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:12,388 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 14:25:12,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:12,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613333700] [2022-01-10 14:25:12,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613333700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:12,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:12,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:25:12,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649106481] [2022-01-10 14:25:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:12,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:25:12,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:25:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:25:12,390 INFO L87 Difference]: Start difference. First operand 296 states and 347 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 14:25:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:13,078 INFO L93 Difference]: Finished difference Result 300 states and 350 transitions. [2022-01-10 14:25:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:25:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2022-01-10 14:25:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:13,081 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:13,081 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:13,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:25:13,081 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 296 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:13,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 151 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 14:25:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2313167259786477) internal successors, (346), 295 states have internal predecessors, (346), 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 14:25:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 346 transitions. [2022-01-10 14:25:13,086 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 346 transitions. Word has length 55 [2022-01-10 14:25:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:13,086 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 346 transitions. [2022-01-10 14:25:13,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 14:25:13,086 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 346 transitions. [2022-01-10 14:25:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 14:25:13,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:13,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:13,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 14:25:13,110 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1337060742, now seen corresponding path program 1 times [2022-01-10 14:25:13,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:13,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962725049] [2022-01-10 14:25:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:13,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:13,654 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 14:25:13,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:13,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962725049] [2022-01-10 14:25:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962725049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:13,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:13,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-10 14:25:13,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725631987] [2022-01-10 14:25:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:13,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 14:25:13,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 14:25:13,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2022-01-10 14:25:13,655 INFO L87 Difference]: Start difference. First operand 296 states and 346 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:18,036 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2022-01-10 14:25:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 14:25:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 14:25:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:18,038 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:18,038 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:18,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 14:25:18,047 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 123 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 4854 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 4895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1166 Invalid, 4895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4854 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-10 14:25:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:18,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2277580071174377) internal successors, (345), 295 states have internal predecessors, (345), 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 14:25:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 345 transitions. [2022-01-10 14:25:18,065 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 345 transitions. Word has length 59 [2022-01-10 14:25:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:18,065 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 345 transitions. [2022-01-10 14:25:18,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 345 transitions. [2022-01-10 14:25:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 14:25:18,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:18,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:18,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 14:25:18,067 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash -553095116, now seen corresponding path program 1 times [2022-01-10 14:25:18,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255724654] [2022-01-10 14:25:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:18,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:18,693 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 14:25:18,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:18,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255724654] [2022-01-10 14:25:18,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255724654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:18,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:18,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-10 14:25:18,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894767219] [2022-01-10 14:25:18,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:18,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 14:25:18,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 14:25:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-01-10 14:25:18,695 INFO L87 Difference]: Start difference. First operand 296 states and 345 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:23,412 INFO L93 Difference]: Finished difference Result 300 states and 348 transitions. [2022-01-10 14:25:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 14:25:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 14:25:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:23,413 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:23,413 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:23,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 14:25:23,414 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 132 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 5138 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 5182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:23,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1193 Invalid, 5182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5138 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 14:25:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2241992882562278) internal successors, (344), 295 states have internal predecessors, (344), 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 14:25:23,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 344 transitions. [2022-01-10 14:25:23,417 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 344 transitions. Word has length 63 [2022-01-10 14:25:23,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:23,418 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 344 transitions. [2022-01-10 14:25:23,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 344 transitions. [2022-01-10 14:25:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 14:25:23,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:23,418 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 14:25:23,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 14:25:23,418 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash -646128146, now seen corresponding path program 1 times [2022-01-10 14:25:23,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:23,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781963711] [2022-01-10 14:25:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:23,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:24,093 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 14:25:24,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781963711] [2022-01-10 14:25:24,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781963711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:24,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:24,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 14:25:24,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519210868] [2022-01-10 14:25:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:24,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 14:25:24,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 14:25:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2022-01-10 14:25:24,094 INFO L87 Difference]: Start difference. First operand 296 states and 344 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 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 14:25:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:29,116 INFO L93 Difference]: Finished difference Result 300 states and 347 transitions. [2022-01-10 14:25:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 14:25:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 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 14:25:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:29,117 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:29,117 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:29,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=1304, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 14:25:29,118 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 184 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 5419 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 5419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:29,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1220 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 5419 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 14:25:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2206405693950177) internal successors, (343), 295 states have internal predecessors, (343), 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 14:25:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 343 transitions. [2022-01-10 14:25:29,121 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 343 transitions. Word has length 67 [2022-01-10 14:25:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:29,122 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 343 transitions. [2022-01-10 14:25:29,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 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 14:25:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 343 transitions. [2022-01-10 14:25:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 14:25:29,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:29,122 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 14:25:29,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 14:25:29,122 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:29,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash 337861544, now seen corresponding path program 1 times [2022-01-10 14:25:29,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:29,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909308670] [2022-01-10 14:25:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:29,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:29,812 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 14:25:29,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909308670] [2022-01-10 14:25:29,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909308670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:29,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:29,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-10 14:25:29,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555107156] [2022-01-10 14:25:29,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:29,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 14:25:29,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 14:25:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2022-01-10 14:25:29,814 INFO L87 Difference]: Start difference. First operand 296 states and 343 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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 14:25:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:35,027 INFO L93 Difference]: Finished difference Result 300 states and 346 transitions. [2022-01-10 14:25:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 14:25:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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 14:25:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:35,029 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:35,029 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:35,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 14:25:35,030 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 150 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 5940 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:35,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1284 Invalid, 5990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 5940 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 14:25:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.217081850533808) internal successors, (342), 295 states have internal predecessors, (342), 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 14:25:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 342 transitions. [2022-01-10 14:25:35,034 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 342 transitions. Word has length 71 [2022-01-10 14:25:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:35,034 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 342 transitions. [2022-01-10 14:25:35,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 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 14:25:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 342 transitions. [2022-01-10 14:25:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 14:25:35,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:35,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:35,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 14:25:35,035 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash 125036898, now seen corresponding path program 1 times [2022-01-10 14:25:35,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:35,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181671704] [2022-01-10 14:25:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:35,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:35,832 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 14:25:35,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:35,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181671704] [2022-01-10 14:25:35,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181671704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:35,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:35,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-10 14:25:35,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728680560] [2022-01-10 14:25:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:35,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 14:25:35,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 14:25:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2022-01-10 14:25:35,834 INFO L87 Difference]: Start difference. First operand 296 states and 342 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:41,709 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2022-01-10 14:25:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 14:25:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 14:25:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:41,714 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:41,714 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:41,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 14:25:41,715 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 208 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 5977 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 5977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:41,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1274 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 5977 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-10 14:25:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.2135231316725978) internal successors, (341), 295 states have internal predecessors, (341), 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 14:25:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 341 transitions. [2022-01-10 14:25:41,718 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 341 transitions. Word has length 75 [2022-01-10 14:25:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:41,719 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 341 transitions. [2022-01-10 14:25:41,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 341 transitions. [2022-01-10 14:25:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 14:25:41,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:41,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:41,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 14:25:41,719 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 803637020, now seen corresponding path program 1 times [2022-01-10 14:25:41,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:41,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122964976] [2022-01-10 14:25:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:41,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:41,892 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 14:25:41,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:41,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122964976] [2022-01-10 14:25:41,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122964976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:41,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:41,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:25:41,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368239852] [2022-01-10 14:25:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:41,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:25:41,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:25:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:25:41,895 INFO L87 Difference]: Start difference. First operand 296 states and 341 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 14:25:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:42,779 INFO L93 Difference]: Finished difference Result 300 states and 344 transitions. [2022-01-10 14:25:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:25:42,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 79 [2022-01-10 14:25:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:42,782 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:42,782 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:42,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:25:42,783 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 289 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:42,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 224 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 14:25:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.209964412811388) internal successors, (340), 295 states have internal predecessors, (340), 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 14:25:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 340 transitions. [2022-01-10 14:25:42,786 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 340 transitions. Word has length 79 [2022-01-10 14:25:42,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:42,786 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 340 transitions. [2022-01-10 14:25:42,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 14:25:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 340 transitions. [2022-01-10 14:25:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 14:25:42,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:42,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 14:25:42,787 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 234042582, now seen corresponding path program 1 times [2022-01-10 14:25:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673037564] [2022-01-10 14:25:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:42,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:42,997 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 14:25:42,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:42,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673037564] [2022-01-10 14:25:42,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673037564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:42,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:42,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 14:25:42,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180476941] [2022-01-10 14:25:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:42,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 14:25:42,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 14:25:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 14:25:42,999 INFO L87 Difference]: Start difference. First operand 296 states and 340 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 14:25:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:43,902 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2022-01-10 14:25:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 14:25:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 83 [2022-01-10 14:25:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:43,905 INFO L225 Difference]: With dead ends: 300 [2022-01-10 14:25:43,905 INFO L226 Difference]: Without dead ends: 296 [2022-01-10 14:25:43,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:25:43,905 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 288 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:43,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 224 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 14:25:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-01-10 14:25:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-01-10 14:25:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 1.206405693950178) internal successors, (339), 295 states have internal predecessors, (339), 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 14:25:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 339 transitions. [2022-01-10 14:25:43,909 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 339 transitions. Word has length 83 [2022-01-10 14:25:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:43,909 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 339 transitions. [2022-01-10 14:25:43,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 14:25:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 339 transitions. [2022-01-10 14:25:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 14:25:43,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:43,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:43,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 14:25:43,910 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 14:25:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:25:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 638710416, now seen corresponding path program 1 times [2022-01-10 14:25:43,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:25:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140965460] [2022-01-10 14:25:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:25:43,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:25:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:25:44,895 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 14:25:44,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:25:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140965460] [2022-01-10 14:25:44,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140965460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:25:44,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:25:44,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-10 14:25:44,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676604028] [2022-01-10 14:25:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:25:44,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-10 14:25:44,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-10 14:25:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2022-01-10 14:25:44,897 INFO L87 Difference]: Start difference. First operand 296 states and 339 transitions. Second operand has 27 states, 27 states have (on average 3.2222222222222223) internal successors, (87), 27 states have internal predecessors, (87), 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)