/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.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 02:45:49,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:45:49,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:45:49,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 02:45:49,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 02:45:49,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 02:45:49,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 02:45:49,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 02:45:49,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 02:45:49,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 02:45:49,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 02:45:49,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-01-10 02:45:49,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:45:49,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:45:49,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:45:49,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 02:45:49,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:45:49,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:45:49,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:45:49,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:45:49,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:45:49,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:45:49,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:45:49,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:45:49,372 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:45:49,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 02:45:49,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:45:49,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:45:49,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:45:49,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:45:49,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 02:45:49,376 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:45:49,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:45:49,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:45:49,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:45:49,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:45:49,585 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:45:49,586 INFO L432 ainManager$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 02:45:49,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d75d885/dc0926a3128a430389b2ee69805004bc/FLAG44265d4ff [2022-01-10 02:45:50,148 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:45:50,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c [2022-01-10 02:45:50,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d75d885/dc0926a3128a430389b2ee69805004bc/FLAG44265d4ff [2022-01-10 02:45:50,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d75d885/dc0926a3128a430389b2ee69805004bc [2022-01-10 02:45:50,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:45:50,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:45:50,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:45:50,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:45:50,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:45:50,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:45:50" (1/1) ... [2022-01-10 02:45:50,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b51f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:50, skipping insertion in model container [2022-01-10 02:45:50,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:45:50" (1/1) ... [2022-01-10 02:45:50,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:45:50,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:45:50,874 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 02:45:50,877 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 02:45:51,235 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 02:45:51,239 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 02:45:51,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+sep-reducer.c[84257,84270] [2022-01-10 02:45:51,251 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 02:45:51,256 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 02:45:51,259 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 02:45:51,263 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 02:45:51,266 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 02:45:51,272 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 02:45:51,275 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 02:45:51,279 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 02:45:51,286 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 02:45:51,290 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 02:45:51,294 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 02:45:51,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:45:51,320 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:45:51,333 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 02:45:51,334 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 02:45:51,528 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 02:45:51,531 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 02:45:51,535 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 02:45:51,537 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 02:45:51,541 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 02:45:51,544 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 02:45:51,548 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 02:45:51,550 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 02:45:51,554 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 02:45:51,557 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 02:45:51,560 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 02:45:51,564 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 02:45:51,568 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 02:45:51,571 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 02:45:51,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:45:51,600 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:45:51,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51 WrapperNode [2022-01-10 02:45:51,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:45:51,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:45:51,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:45:51,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:45:51,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,751 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2954 [2022-01-10 02:45:51,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:45:51,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:45:51,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:45:51,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:45:51,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:45:51,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:45:51,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:45:51,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:45:51,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (1/1) ... [2022-01-10 02:45:51,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:45:51,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:45:51,880 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 02:45:51,902 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 02:45:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:45:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 02:45:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:45:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:45:52,174 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:45:52,176 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:45:53,704 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:45:53,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:45:53,720 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 02:45:53,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:45:53 BoogieIcfgContainer [2022-01-10 02:45:53,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:45:53,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:45:53,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:45:53,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:45:53,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:45:50" (1/3) ... [2022-01-10 02:45:53,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b39cfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:45:53, skipping insertion in model container [2022-01-10 02:45:53,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:45:51" (2/3) ... [2022-01-10 02:45:53,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b39cfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:45:53, skipping insertion in model container [2022-01-10 02:45:53,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:45:53" (3/3) ... [2022-01-10 02:45:53,730 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+sep-reducer.c [2022-01-10 02:45:53,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:45:53,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-01-10 02:45:53,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:45:53,791 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 02:45:53,792 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-01-10 02:45:53,818 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 02:45:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 02:45:53,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:53,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:53,833 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 02:45:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1804934597, now seen corresponding path program 1 times [2022-01-10 02:45:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243634602] [2022-01-10 02:45:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:53,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:53,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:53,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:53,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 02:45:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:54,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 02:45:54,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:54,224 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 02:45:54,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:54,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:54,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243634602] [2022-01-10 02:45:54,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243634602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:54,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:54,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:45:54,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455009213] [2022-01-10 02:45:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:54,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:45:54,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:45:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:45:54,273 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 02:45:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:45:55,049 INFO L93 Difference]: Finished difference Result 492 states and 917 transitions. [2022-01-10 02:45:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:45:55,054 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 02:45:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:45:55,063 INFO L225 Difference]: With dead ends: 492 [2022-01-10 02:45:55,063 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:45:55,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 02:45:55,073 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 24 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:45:55,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 2091 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:45:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:45:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:45:55,140 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 02:45:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 364 transitions. [2022-01-10 02:45:55,142 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 364 transitions. Word has length 7 [2022-01-10 02:45:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:45:55,142 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 364 transitions. [2022-01-10 02:45:55,142 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 02:45:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 364 transitions. [2022-01-10 02:45:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 02:45:55,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:55,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:55,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:45:55,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:45:55,344 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 02:45:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 118401710, now seen corresponding path program 1 times [2022-01-10 02:45:55,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:55,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443666976] [2022-01-10 02:45:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:55,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:55,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:55,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 02:45:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:55,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:45:55,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:55,605 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 02:45:55,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:55,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443666976] [2022-01-10 02:45:55,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443666976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:55,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:55,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 02:45:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934403189] [2022-01-10 02:45:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:55,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 02:45:55,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 02:45:55,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 02:45:55,608 INFO L87 Difference]: Start difference. First operand 301 states and 364 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 02:45:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:45:56,061 INFO L93 Difference]: Finished difference Result 304 states and 366 transitions. [2022-01-10 02:45:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:45:56,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 02:45:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:45:56,063 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:45:56,063 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:45:56,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 02:45:56,065 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 4 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:45:56,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 747 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:45:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:45:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:45:56,073 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 02:45:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 361 transitions. [2022-01-10 02:45:56,074 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 361 transitions. Word has length 8 [2022-01-10 02:45:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:45:56,075 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 361 transitions. [2022-01-10 02:45:56,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 02:45:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 361 transitions. [2022-01-10 02:45:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 02:45:56,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:56,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:56,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 02:45:56,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:45:56,284 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 02:45:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash 890974571, now seen corresponding path program 1 times [2022-01-10 02:45:56,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:56,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112708585] [2022-01-10 02:45:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:56,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:56,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:56,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:56,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 02:45:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:56,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:45:56,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:56,498 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 02:45:56,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:56,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:56,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112708585] [2022-01-10 02:45:56,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112708585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:56,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:56,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:45:56,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254332396] [2022-01-10 02:45:56,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:56,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:45:56,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:45:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:45:56,501 INFO L87 Difference]: Start difference. First operand 299 states and 361 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:45:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:45:56,968 INFO L93 Difference]: Finished difference Result 306 states and 367 transitions. [2022-01-10 02:45:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:45:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:45:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:45:56,970 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:45:56,970 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:45:56,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:45:56,971 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 10 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:45:56,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 776 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:45:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:45:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:45:56,981 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 02:45:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 363 transitions. [2022-01-10 02:45:56,982 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 363 transitions. Word has length 11 [2022-01-10 02:45:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:45:56,983 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 363 transitions. [2022-01-10 02:45:56,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 02:45:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 363 transitions. [2022-01-10 02:45:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 02:45:56,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:56,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:56,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 02:45:57,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:45:57,192 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 02:45:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1850411976, now seen corresponding path program 1 times [2022-01-10 02:45:57,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:57,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935060411] [2022-01-10 02:45:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:57,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:57,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:57,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:57,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 02:45:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 02:45:57,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:57,439 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 02:45:57,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:57,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:57,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935060411] [2022-01-10 02:45:57,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935060411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:57,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:57,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:45:57,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182142582] [2022-01-10 02:45:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:57,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:45:57,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:45:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:45:57,442 INFO L87 Difference]: Start difference. First operand 301 states and 363 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:45:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:45:58,329 INFO L93 Difference]: Finished difference Result 304 states and 365 transitions. [2022-01-10 02:45:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:45:58,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:45:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:45:58,331 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:45:58,331 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:45:58,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:45:58,333 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 6 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:45:58,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 815 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:45:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:45:58,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:45:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2720848056537102) internal successors, (360), 298 states have internal predecessors, (360), 0 states have call successors, (0), 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 02:45:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 360 transitions. [2022-01-10 02:45:58,339 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 360 transitions. Word has length 12 [2022-01-10 02:45:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:45:58,339 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 360 transitions. [2022-01-10 02:45:58,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 02:45:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 360 transitions. [2022-01-10 02:45:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 02:45:58,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:58,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:58,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 02:45:58,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:45:58,549 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 02:45:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash -900666207, now seen corresponding path program 1 times [2022-01-10 02:45:58,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639867428] [2022-01-10 02:45:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:58,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:58,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:58,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 02:45:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:58,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:45:58,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:58,746 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 02:45:58,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:58,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639867428] [2022-01-10 02:45:58,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639867428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:58,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:58,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:45:58,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108169134] [2022-01-10 02:45:58,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:58,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:45:58,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:45:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:45:58,749 INFO L87 Difference]: Start difference. First operand 299 states and 360 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 02:45:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:45:59,422 INFO L93 Difference]: Finished difference Result 306 states and 366 transitions. [2022-01-10 02:45:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:45:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 02:45:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:45:59,423 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:45:59,424 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:45:59,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:45:59,425 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 10 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:45:59,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 805 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:45:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:45:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:45:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2701754385964912) internal successors, (362), 300 states have internal predecessors, (362), 0 states have call successors, (0), 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 02:45:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 362 transitions. [2022-01-10 02:45:59,434 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 362 transitions. Word has length 15 [2022-01-10 02:45:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:45:59,434 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 362 transitions. [2022-01-10 02:45:59,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 02:45:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 362 transitions. [2022-01-10 02:45:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 02:45:59,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:45:59,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:45:59,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 02:45:59,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:45:59,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:45:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:45:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2144122706, now seen corresponding path program 1 times [2022-01-10 02:45:59,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:45:59,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922649299] [2022-01-10 02:45:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:45:59,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:45:59,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:45:59,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:45:59,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 02:45:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:45:59,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:45:59,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:45:59,912 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 02:45:59,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:45:59,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:45:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922649299] [2022-01-10 02:45:59,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922649299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:45:59,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:45:59,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:45:59,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378198348] [2022-01-10 02:45:59,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:45:59,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:45:59,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:45:59,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:45:59,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:45:59,914 INFO L87 Difference]: Start difference. First operand 301 states and 362 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:46:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:00,825 INFO L93 Difference]: Finished difference Result 304 states and 364 transitions. [2022-01-10 02:46:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:46:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-01-10 02:46:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:00,827 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:00,827 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:00,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:46:00,828 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 7 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:00,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 805 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:46:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2685512367491165) internal successors, (359), 298 states have internal predecessors, (359), 0 states have call successors, (0), 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 02:46:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 359 transitions. [2022-01-10 02:46:00,834 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 359 transitions. Word has length 16 [2022-01-10 02:46:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:00,834 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 359 transitions. [2022-01-10 02:46:00,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:46:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 359 transitions. [2022-01-10 02:46:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 02:46:00,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:00,835 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 02:46:00,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 02:46:01,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:01,036 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 02:46:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1930089815, now seen corresponding path program 1 times [2022-01-10 02:46:01,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:01,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661016434] [2022-01-10 02:46:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:01,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:01,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:01,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 02:46:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:01,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 02:46:01,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:01,256 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 02:46:01,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:01,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:01,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661016434] [2022-01-10 02:46:01,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661016434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:01,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:01,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:46:01,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043681524] [2022-01-10 02:46:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:01,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:46:01,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:46:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:46:01,266 INFO L87 Difference]: Start difference. First operand 299 states and 359 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 02:46:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:02,038 INFO L93 Difference]: Finished difference Result 306 states and 365 transitions. [2022-01-10 02:46:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:46:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 02:46:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:02,040 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:02,040 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:02,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:46:02,041 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 10 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:02,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 834 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:46:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2666666666666666) internal successors, (361), 300 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 02:46:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 361 transitions. [2022-01-10 02:46:02,047 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 361 transitions. Word has length 19 [2022-01-10 02:46:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:02,047 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 361 transitions. [2022-01-10 02:46:02,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 02:46:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 361 transitions. [2022-01-10 02:46:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 02:46:02,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:02,048 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] [2022-01-10 02:46:02,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:02,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:02,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash -296753828, now seen corresponding path program 1 times [2022-01-10 02:46:02,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:02,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66099371] [2022-01-10 02:46:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:02,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:02,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:02,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:02,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 02:46:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:02,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:46:02,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:02,563 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 02:46:02,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:02,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66099371] [2022-01-10 02:46:02,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66099371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:02,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:02,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:46:02,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704776661] [2022-01-10 02:46:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:46:02,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:02,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:46:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:46:02,565 INFO L87 Difference]: Start difference. First operand 301 states and 361 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 02:46:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:03,655 INFO L93 Difference]: Finished difference Result 304 states and 363 transitions. [2022-01-10 02:46:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:46:03,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 02:46:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:03,657 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:03,657 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:03,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:46:03,658 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 6 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:03,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 873 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:46:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.265017667844523) internal successors, (358), 298 states have internal predecessors, (358), 0 states have call successors, (0), 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 02:46:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2022-01-10 02:46:03,663 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 20 [2022-01-10 02:46:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:03,663 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2022-01-10 02:46:03,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 02:46:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2022-01-10 02:46:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 02:46:03,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:03,664 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 02:46:03,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:03,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:03,873 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 02:46:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1316367245, now seen corresponding path program 1 times [2022-01-10 02:46:03,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:03,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258945664] [2022-01-10 02:46:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:03,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:03,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:03,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 02:46:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:04,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 02:46:04,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:04,137 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 02:46:04,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:04,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:04,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258945664] [2022-01-10 02:46:04,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258945664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:04,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:04,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:46:04,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774084430] [2022-01-10 02:46:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:46:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:46:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:46:04,140 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 02:46:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:04,948 INFO L93 Difference]: Finished difference Result 306 states and 364 transitions. [2022-01-10 02:46:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 02:46:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 02:46:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:04,950 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:04,950 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:04,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:46:04,951 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 10 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:04,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 863 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:46:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:04,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.263157894736842) internal successors, (360), 300 states have internal predecessors, (360), 0 states have call successors, (0), 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 02:46:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 360 transitions. [2022-01-10 02:46:04,957 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 360 transitions. Word has length 23 [2022-01-10 02:46:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:04,957 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 360 transitions. [2022-01-10 02:46:04,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 02:46:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 360 transitions. [2022-01-10 02:46:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 02:46:04,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:04,958 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] [2022-01-10 02:46:04,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:05,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:05,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2142284314, now seen corresponding path program 1 times [2022-01-10 02:46:05,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:05,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99677313] [2022-01-10 02:46:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:05,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:05,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:05,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:05,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 02:46:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 02:46:05,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:05,533 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 02:46:05,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:05,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:05,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99677313] [2022-01-10 02:46:05,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99677313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:05,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:05,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:46:05,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330428914] [2022-01-10 02:46:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:05,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:46:05,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:46:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:46:05,535 INFO L87 Difference]: Start difference. First operand 301 states and 360 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:46:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:06,660 INFO L93 Difference]: Finished difference Result 304 states and 362 transitions. [2022-01-10 02:46:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:46:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-01-10 02:46:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:06,662 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:06,662 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:06,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:46:06,663 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 7 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:06,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 863 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:46:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2614840989399294) internal successors, (357), 298 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 02:46:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 357 transitions. [2022-01-10 02:46:06,668 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 357 transitions. Word has length 24 [2022-01-10 02:46:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:06,668 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 357 transitions. [2022-01-10 02:46:06,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:46:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 357 transitions. [2022-01-10 02:46:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 02:46:06,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:06,669 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 02:46:06,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:06,878 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 02:46:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1558171837, now seen corresponding path program 1 times [2022-01-10 02:46:06,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819530481] [2022-01-10 02:46:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:06,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:06,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:06,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:06,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 02:46:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:07,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:46:07,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:07,128 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 02:46:07,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:07,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:07,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819530481] [2022-01-10 02:46:07,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819530481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:07,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:07,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:46:07,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706722246] [2022-01-10 02:46:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:07,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:46:07,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:46:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:46:07,130 INFO L87 Difference]: Start difference. First operand 299 states and 357 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 02:46:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:08,048 INFO L93 Difference]: Finished difference Result 306 states and 363 transitions. [2022-01-10 02:46:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:46:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 02:46:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:08,050 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:08,050 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:08,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:46:08,050 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 10 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:08,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 892 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:46:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:08,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2596491228070175) internal successors, (359), 300 states have internal predecessors, (359), 0 states have call successors, (0), 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 02:46:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-01-10 02:46:08,055 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 27 [2022-01-10 02:46:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:08,056 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-01-10 02:46:08,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 02:46:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-01-10 02:46:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 02:46:08,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:08,057 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] [2022-01-10 02:46:08,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 02:46:08,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:08,268 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:08,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1058682640, now seen corresponding path program 1 times [2022-01-10 02:46:08,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:08,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509430969] [2022-01-10 02:46:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:08,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:08,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:08,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 02:46:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:08,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:46:08,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:08,643 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 02:46:08,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:08,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:08,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509430969] [2022-01-10 02:46:08,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509430969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:08,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:08,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:46:08,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996762195] [2022-01-10 02:46:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:08,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:46:08,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:46:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:46:08,644 INFO L87 Difference]: Start difference. First operand 301 states and 359 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:46:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:10,008 INFO L93 Difference]: Finished difference Result 304 states and 361 transitions. [2022-01-10 02:46:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:46:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 02:46:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:10,010 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:10,010 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:10,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:46:10,011 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 6 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:10,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 931 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:46:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2579505300353357) internal successors, (356), 298 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 02:46:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 356 transitions. [2022-01-10 02:46:10,016 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 356 transitions. Word has length 28 [2022-01-10 02:46:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:10,016 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 356 transitions. [2022-01-10 02:46:10,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 02:46:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 356 transitions. [2022-01-10 02:46:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 02:46:10,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:10,017 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] [2022-01-10 02:46:10,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:10,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:10,226 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 02:46:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 787882105, now seen corresponding path program 1 times [2022-01-10 02:46:10,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:10,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249125428] [2022-01-10 02:46:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:10,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:10,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:10,228 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:10,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 02:46:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:10,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:46:10,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:10,475 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 02:46:10,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:10,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249125428] [2022-01-10 02:46:10,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249125428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:10,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:46:10,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660684664] [2022-01-10 02:46:10,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:10,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:46:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:46:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:46:10,477 INFO L87 Difference]: Start difference. First operand 299 states and 356 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 02:46:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:11,451 INFO L93 Difference]: Finished difference Result 306 states and 362 transitions. [2022-01-10 02:46:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:46:11,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 02:46:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:11,452 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:11,452 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:11,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:46:11,453 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 10 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:11,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 921 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:46:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.256140350877193) internal successors, (358), 300 states have internal predecessors, (358), 0 states have call successors, (0), 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 02:46:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 358 transitions. [2022-01-10 02:46:11,458 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 358 transitions. Word has length 31 [2022-01-10 02:46:11,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:11,458 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 358 transitions. [2022-01-10 02:46:11,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 02:46:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 358 transitions. [2022-01-10 02:46:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 02:46:11,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:11,459 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] [2022-01-10 02:46:11,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:11,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:11,669 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1345454470, now seen corresponding path program 1 times [2022-01-10 02:46:11,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:11,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580830303] [2022-01-10 02:46:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:11,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:11,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:11,671 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:11,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 02:46:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:11,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 02:46:11,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:12,113 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 02:46:12,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:12,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580830303] [2022-01-10 02:46:12,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580830303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:12,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:12,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 02:46:12,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054655302] [2022-01-10 02:46:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:12,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:46:12,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:46:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:46:12,115 INFO L87 Difference]: Start difference. First operand 301 states and 358 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:46:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:13,744 INFO L93 Difference]: Finished difference Result 304 states and 360 transitions. [2022-01-10 02:46:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:46:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-01-10 02:46:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:13,746 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:13,746 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:13,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:46:13,746 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 6 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:13,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 960 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2570 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:46:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.254416961130742) internal successors, (355), 298 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 02:46:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 355 transitions. [2022-01-10 02:46:13,751 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 355 transitions. Word has length 32 [2022-01-10 02:46:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:13,751 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 355 transitions. [2022-01-10 02:46:13,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 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 02:46:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 355 transitions. [2022-01-10 02:46:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 02:46:13,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:13,752 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 02:46:13,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:13,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:13,962 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 02:46:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2001026863, now seen corresponding path program 1 times [2022-01-10 02:46:13,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466779808] [2022-01-10 02:46:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:13,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:13,964 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:13,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 02:46:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:14,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 02:46:14,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:14,232 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 02:46:14,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:14,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:14,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466779808] [2022-01-10 02:46:14,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466779808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:14,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:14,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 02:46:14,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481613268] [2022-01-10 02:46:14,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:14,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 02:46:14,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 02:46:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:46:14,233 INFO L87 Difference]: Start difference. First operand 299 states and 355 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 02:46:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:15,310 INFO L93 Difference]: Finished difference Result 306 states and 361 transitions. [2022-01-10 02:46:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:46:15,310 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 02:46:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:15,311 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:15,311 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:15,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:46:15,312 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 10 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:15,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 950 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:46:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2526315789473683) internal successors, (357), 300 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 02:46:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 357 transitions. [2022-01-10 02:46:15,318 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 357 transitions. Word has length 35 [2022-01-10 02:46:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:15,318 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 357 transitions. [2022-01-10 02:46:15,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 02:46:15,318 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 357 transitions. [2022-01-10 02:46:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 02:46:15,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:15,319 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] [2022-01-10 02:46:15,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 02:46:15,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:15,523 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1902294660, now seen corresponding path program 1 times [2022-01-10 02:46:15,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335357549] [2022-01-10 02:46:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:15,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:15,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:15,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 02:46:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:15,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 02:46:15,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:15,962 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 02:46:15,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:15,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:15,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335357549] [2022-01-10 02:46:15,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335357549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:15,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:15,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 02:46:15,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496816334] [2022-01-10 02:46:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:15,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 02:46:15,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:15,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 02:46:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:46:15,965 INFO L87 Difference]: Start difference. First operand 301 states and 357 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 02:46:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:17,698 INFO L93 Difference]: Finished difference Result 304 states and 359 transitions. [2022-01-10 02:46:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:46:17,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-10 02:46:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:17,700 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:17,700 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:17,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:46:17,701 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 6 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:17,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 989 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:46:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2508833922261484) internal successors, (354), 298 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 02:46:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 354 transitions. [2022-01-10 02:46:17,706 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 354 transitions. Word has length 36 [2022-01-10 02:46:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:17,706 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 354 transitions. [2022-01-10 02:46:17,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 02:46:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 354 transitions. [2022-01-10 02:46:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 02:46:17,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:17,707 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 02:46:17,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:17,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:17,919 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 02:46:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 414894949, now seen corresponding path program 1 times [2022-01-10 02:46:17,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:17,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115245857] [2022-01-10 02:46:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:17,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:17,921 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:17,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 02:46:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:18,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:46:18,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:18,230 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 02:46:18,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:18,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:18,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115245857] [2022-01-10 02:46:18,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115245857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:18,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:18,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 02:46:18,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955357760] [2022-01-10 02:46:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:18,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 02:46:18,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:18,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 02:46:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:46:18,232 INFO L87 Difference]: Start difference. First operand 299 states and 354 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 02:46:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:19,422 INFO L93 Difference]: Finished difference Result 306 states and 360 transitions. [2022-01-10 02:46:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:46:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 02:46:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:19,423 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:19,423 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:19,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:46:19,424 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 10 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:19,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 979 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:46:19,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.249122807017544) internal successors, (356), 300 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 02:46:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 356 transitions. [2022-01-10 02:46:19,428 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 356 transitions. Word has length 39 [2022-01-10 02:46:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 356 transitions. [2022-01-10 02:46:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 02:46:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 356 transitions. [2022-01-10 02:46:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 02:46:19,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:19,443 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] [2022-01-10 02:46:19,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:19,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:19,647 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash -23154418, now seen corresponding path program 1 times [2022-01-10 02:46:19,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760842875] [2022-01-10 02:46:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:19,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:19,649 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:19,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 02:46:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:19,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 02:46:19,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:20,101 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 02:46:20,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:20,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760842875] [2022-01-10 02:46:20,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760842875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:20,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:20,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 02:46:20,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516510229] [2022-01-10 02:46:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:20,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 02:46:20,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 02:46:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:46:20,103 INFO L87 Difference]: Start difference. First operand 301 states and 356 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 02:46:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:21,874 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2022-01-10 02:46:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 02:46:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 02:46:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:21,875 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:21,875 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:21,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:46:21,876 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 7 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:21,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 979 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:46:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2473498233215548) internal successors, (353), 298 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 02:46:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 353 transitions. [2022-01-10 02:46:21,881 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 353 transitions. Word has length 40 [2022-01-10 02:46:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 353 transitions. [2022-01-10 02:46:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 02:46:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 353 transitions. [2022-01-10 02:46:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 02:46:21,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:21,882 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 02:46:21,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:22,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:22,087 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 02:46:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash 392430875, now seen corresponding path program 1 times [2022-01-10 02:46:22,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:22,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234496956] [2022-01-10 02:46:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:22,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:22,089 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:22,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 02:46:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 02:46:22,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:22,398 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 02:46:22,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:22,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234496956] [2022-01-10 02:46:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234496956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:22,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:22,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 02:46:22,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032507588] [2022-01-10 02:46:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 02:46:22,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 02:46:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-01-10 02:46:22,400 INFO L87 Difference]: Start difference. First operand 299 states and 353 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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 02:46:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:23,734 INFO L93 Difference]: Finished difference Result 306 states and 359 transitions. [2022-01-10 02:46:23,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 02:46:23,734 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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 02:46:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:23,735 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:23,735 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:23,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:46:23,736 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 10 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:23,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1008 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:46:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2456140350877194) internal successors, (355), 300 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 02:46:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 355 transitions. [2022-01-10 02:46:23,741 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 355 transitions. Word has length 43 [2022-01-10 02:46:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:23,741 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 355 transitions. [2022-01-10 02:46:23,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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 02:46:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 355 transitions. [2022-01-10 02:46:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 02:46:23,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:23,742 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] [2022-01-10 02:46:23,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:23,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:23,951 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -719540712, now seen corresponding path program 1 times [2022-01-10 02:46:23,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:23,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240312809] [2022-01-10 02:46:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:23,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:23,953 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:23,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 02:46:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:24,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 02:46:24,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:46:24,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:24,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240312809] [2022-01-10 02:46:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240312809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:24,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:24,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 02:46:24,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334978819] [2022-01-10 02:46:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:24,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 02:46:24,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 02:46:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:46:24,434 INFO L87 Difference]: Start difference. First operand 301 states and 355 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 02:46:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:26,349 INFO L93 Difference]: Finished difference Result 304 states and 357 transitions. [2022-01-10 02:46:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:46:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 02:46:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:26,351 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:26,351 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:46:26,354 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 7 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:26,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1008 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3191 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:46:26,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.243816254416961) internal successors, (352), 298 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 02:46:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 352 transitions. [2022-01-10 02:46:26,363 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 352 transitions. Word has length 44 [2022-01-10 02:46:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:26,364 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 352 transitions. [2022-01-10 02:46:26,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 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 02:46:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 352 transitions. [2022-01-10 02:46:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 02:46:26,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:26,367 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 02:46:26,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:26,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:26,579 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 02:46:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 783166545, now seen corresponding path program 1 times [2022-01-10 02:46:26,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:26,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372461515] [2022-01-10 02:46:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:26,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:26,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:26,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 02:46:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:26,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 02:46:26,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:26,889 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 02:46:26,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:26,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:26,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372461515] [2022-01-10 02:46:26,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372461515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:26,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:26,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 02:46:26,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314425765] [2022-01-10 02:46:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:26,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 02:46:26,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 02:46:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:46:26,890 INFO L87 Difference]: Start difference. First operand 299 states and 352 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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 02:46:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:28,278 INFO L93 Difference]: Finished difference Result 306 states and 358 transitions. [2022-01-10 02:46:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:46:28,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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 02:46:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:28,280 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:28,280 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:28,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:46:28,280 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 10 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:28,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1037 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 02:46:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2421052631578948) internal successors, (354), 300 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 02:46:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 354 transitions. [2022-01-10 02:46:28,285 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 354 transitions. Word has length 47 [2022-01-10 02:46:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:28,285 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 354 transitions. [2022-01-10 02:46:28,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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 02:46:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 354 transitions. [2022-01-10 02:46:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 02:46:28,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:28,286 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] [2022-01-10 02:46:28,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:28,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:28,495 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:28,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1491636830, now seen corresponding path program 1 times [2022-01-10 02:46:28,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:28,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397694589] [2022-01-10 02:46:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:28,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:28,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:28,497 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:28,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 02:46:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:28,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 02:46:28,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:29,030 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 02:46:29,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:29,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397694589] [2022-01-10 02:46:29,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397694589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:29,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:29,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 02:46:29,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403191034] [2022-01-10 02:46:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:29,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 02:46:29,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 02:46:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:46:29,032 INFO L87 Difference]: Start difference. First operand 301 states and 354 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:46:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:31,069 INFO L93 Difference]: Finished difference Result 304 states and 356 transitions. [2022-01-10 02:46:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:46:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 02:46:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:31,073 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:31,073 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:31,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:46:31,074 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 7 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 3498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:31,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1037 Invalid, 3498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3498 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 02:46:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2402826855123674) internal successors, (351), 298 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 02:46:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 351 transitions. [2022-01-10 02:46:31,078 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 351 transitions. Word has length 48 [2022-01-10 02:46:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:31,079 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 351 transitions. [2022-01-10 02:46:31,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:46:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 351 transitions. [2022-01-10 02:46:31,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 02:46:31,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:31,079 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 02:46:31,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:31,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:31,283 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 02:46:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash 560365831, now seen corresponding path program 1 times [2022-01-10 02:46:31,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:31,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252389968] [2022-01-10 02:46:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:31,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:31,285 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:31,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 02:46:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:31,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 02:46:31,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:31,618 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 02:46:31,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:31,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252389968] [2022-01-10 02:46:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252389968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:31,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:31,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 02:46:31,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066667038] [2022-01-10 02:46:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:31,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 02:46:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 02:46:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:46:31,619 INFO L87 Difference]: Start difference. First operand 299 states and 351 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 02:46:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:33,103 INFO L93 Difference]: Finished difference Result 306 states and 357 transitions. [2022-01-10 02:46:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:46:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 02:46:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:33,104 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:33,104 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:33,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:46:33,105 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:33,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1066 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 02:46:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2385964912280703) internal successors, (353), 300 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 02:46:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 353 transitions. [2022-01-10 02:46:33,110 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 353 transitions. Word has length 51 [2022-01-10 02:46:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:33,110 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 353 transitions. [2022-01-10 02:46:33,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 02:46:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 353 transitions. [2022-01-10 02:46:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 02:46:33,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:33,111 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] [2022-01-10 02:46:33,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 02:46:33,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:33,320 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:33,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:33,321 INFO L85 PathProgramCache]: Analyzing trace with hash 191475628, now seen corresponding path program 1 times [2022-01-10 02:46:33,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:33,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482813086] [2022-01-10 02:46:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:33,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:33,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:33,322 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:33,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 02:46:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 02:46:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:33,894 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 02:46:33,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:33,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482813086] [2022-01-10 02:46:33,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482813086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:33,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:33,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 02:46:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389598278] [2022-01-10 02:46:33,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:33,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 02:46:33,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 02:46:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:46:33,896 INFO L87 Difference]: Start difference. First operand 301 states and 353 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:46:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:36,108 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2022-01-10 02:46:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:46:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 02:46:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:36,110 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:36,110 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:36,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:46:36,110 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 7 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:36,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1066 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3803 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 02:46:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2367491166077738) internal successors, (350), 298 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 02:46:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 350 transitions. [2022-01-10 02:46:36,115 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 350 transitions. Word has length 52 [2022-01-10 02:46:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:36,115 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 350 transitions. [2022-01-10 02:46:36,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:46:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 350 transitions. [2022-01-10 02:46:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 02:46:36,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:36,116 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 02:46:36,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:36,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:36,325 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash 163201853, now seen corresponding path program 1 times [2022-01-10 02:46:36,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:36,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726503104] [2022-01-10 02:46:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:36,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:36,327 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:36,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 02:46:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:36,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 02:46:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:36,705 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 02:46:36,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:36,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726503104] [2022-01-10 02:46:36,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726503104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:36,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:36,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 02:46:36,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447689148] [2022-01-10 02:46:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:36,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 02:46:36,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 02:46:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:46:36,707 INFO L87 Difference]: Start difference. First operand 299 states and 350 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 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 02:46:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:38,310 INFO L93 Difference]: Finished difference Result 306 states and 356 transitions. [2022-01-10 02:46:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:46:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 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 02:46:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:38,311 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:38,311 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:38,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:46:38,311 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 10 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:38,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1095 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4102 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:46:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2350877192982457) internal successors, (352), 300 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 02:46:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 352 transitions. [2022-01-10 02:46:38,316 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 352 transitions. Word has length 55 [2022-01-10 02:46:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:38,316 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 352 transitions. [2022-01-10 02:46:38,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 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 02:46:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 352 transitions. [2022-01-10 02:46:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 02:46:38,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:38,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:46:38,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 02:46:38,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:38,526 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash 764294198, now seen corresponding path program 1 times [2022-01-10 02:46:38,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843343999] [2022-01-10 02:46:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:38,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:38,529 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:38,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 02:46:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:38,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 02:46:38,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:39,138 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 02:46:39,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:39,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:39,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843343999] [2022-01-10 02:46:39,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843343999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:39,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:39,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 02:46:39,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185516313] [2022-01-10 02:46:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 02:46:39,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 02:46:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:46:39,140 INFO L87 Difference]: Start difference. First operand 301 states and 352 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:41,472 INFO L93 Difference]: Finished difference Result 304 states and 354 transitions. [2022-01-10 02:46:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:46:41,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 02:46:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:41,475 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:41,475 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:41,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:46:41,476 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 7 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:41,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1095 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4106 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 02:46:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2332155477031803) internal successors, (349), 298 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 02:46:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 349 transitions. [2022-01-10 02:46:41,487 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 349 transitions. Word has length 56 [2022-01-10 02:46:41,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:41,487 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 349 transitions. [2022-01-10 02:46:41,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 349 transitions. [2022-01-10 02:46:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 02:46:41,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:41,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:41,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 02:46:41,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:41,691 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1456033037, now seen corresponding path program 1 times [2022-01-10 02:46:41,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143217764] [2022-01-10 02:46:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:41,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:41,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:41,693 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:41,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 02:46:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 02:46:41,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:42,078 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 02:46:42,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:42,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:42,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143217764] [2022-01-10 02:46:42,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143217764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:42,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:42,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 02:46:42,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96082714] [2022-01-10 02:46:42,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:42,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 02:46:42,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 02:46:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:46:42,079 INFO L87 Difference]: Start difference. First operand 299 states and 349 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 02:46:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:43,767 INFO L93 Difference]: Finished difference Result 306 states and 355 transitions. [2022-01-10 02:46:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:46:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 02:46:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:43,769 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:43,769 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:43,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:46:43,769 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 10 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:43,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1124 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:46:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.231578947368421) internal successors, (351), 300 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 02:46:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 351 transitions. [2022-01-10 02:46:43,774 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 351 transitions. Word has length 59 [2022-01-10 02:46:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:43,774 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 351 transitions. [2022-01-10 02:46:43,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 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 02:46:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 351 transitions. [2022-01-10 02:46:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 02:46:43,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:43,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:46:43,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:43,984 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2107620160, now seen corresponding path program 1 times [2022-01-10 02:46:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:43,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628133405] [2022-01-10 02:46:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:43,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:43,986 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:43,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 02:46:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:44,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 02:46:44,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:44,654 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 02:46:44,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:44,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628133405] [2022-01-10 02:46:44,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628133405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:44,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:44,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 02:46:44,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745083702] [2022-01-10 02:46:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:44,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 02:46:44,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 02:46:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:46:44,656 INFO L87 Difference]: Start difference. First operand 301 states and 351 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:47,281 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2022-01-10 02:46:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 02:46:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 02:46:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:47,282 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:47,282 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:47,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:46:47,283 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 6 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 4712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:47,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1163 Invalid, 4712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 02:46:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.2296819787985867) internal successors, (348), 298 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 02:46:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2022-01-10 02:46:47,287 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 60 [2022-01-10 02:46:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:47,287 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2022-01-10 02:46:47,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2022-01-10 02:46:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 02:46:47,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:47,288 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 02:46:47,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 02:46:47,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:47,497 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1194782679, now seen corresponding path program 1 times [2022-01-10 02:46:47,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854226846] [2022-01-10 02:46:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:47,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:47,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:47,499 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:47,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 02:46:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 02:46:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:47,880 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 02:46:47,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:47,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:47,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854226846] [2022-01-10 02:46:47,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854226846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:47,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:47,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 02:46:47,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422114984] [2022-01-10 02:46:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:47,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 02:46:47,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 02:46:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:46:47,882 INFO L87 Difference]: Start difference. First operand 299 states and 348 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 02:46:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:49,677 INFO L93 Difference]: Finished difference Result 306 states and 354 transitions. [2022-01-10 02:46:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 02:46:49,678 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 02:46:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:49,678 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:49,678 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:49,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:46:49,679 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 10 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:49,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1153 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4702 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:46:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 300 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 02:46:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2022-01-10 02:46:49,683 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 63 [2022-01-10 02:46:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:49,683 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2022-01-10 02:46:49,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 02:46:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2022-01-10 02:46:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 02:46:49,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:49,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:46:49,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:49,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:49,894 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:49,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1616446666, now seen corresponding path program 1 times [2022-01-10 02:46:49,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:49,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438516194] [2022-01-10 02:46:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:49,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:49,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:49,896 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 02:46:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:50,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 02:46:50,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:50,604 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 02:46:50,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:50,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438516194] [2022-01-10 02:46:50,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438516194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:50,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:50,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-10 02:46:50,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601560979] [2022-01-10 02:46:50,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:50,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 02:46:50,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 02:46:50,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:46:50,606 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:53,265 INFO L93 Difference]: Finished difference Result 304 states and 352 transitions. [2022-01-10 02:46:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 02:46:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 02:46:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:53,266 INFO L225 Difference]: With dead ends: 304 [2022-01-10 02:46:53,266 INFO L226 Difference]: Without dead ends: 299 [2022-01-10 02:46:53,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-01-10 02:46:53,267 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 7 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 4706 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:53,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1153 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4706 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 02:46:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-01-10 02:46:53,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-01-10 02:46:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 283 states have (on average 1.226148409893993) internal successors, (347), 298 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 02:46:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 347 transitions. [2022-01-10 02:46:53,271 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 347 transitions. Word has length 64 [2022-01-10 02:46:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:53,271 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 347 transitions. [2022-01-10 02:46:53,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:46:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 347 transitions. [2022-01-10 02:46:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 02:46:53,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:53,272 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 02:46:53,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:53,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:53,482 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash 952015583, now seen corresponding path program 1 times [2022-01-10 02:46:53,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:53,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645922265] [2022-01-10 02:46:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:53,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:53,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:53,483 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:53,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 02:46:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:53,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 02:46:53,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:53,927 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 02:46:53,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:53,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645922265] [2022-01-10 02:46:53,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645922265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:53,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:53,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-10 02:46:53,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514401799] [2022-01-10 02:46:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:53,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 02:46:53,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 02:46:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:46:53,929 INFO L87 Difference]: Start difference. First operand 299 states and 347 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 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 02:46:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:46:55,823 INFO L93 Difference]: Finished difference Result 306 states and 353 transitions. [2022-01-10 02:46:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 02:46:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 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 02:46:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:46:55,824 INFO L225 Difference]: With dead ends: 306 [2022-01-10 02:46:55,824 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 02:46:55,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2022-01-10 02:46:55,825 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 10 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:46:55,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1182 Invalid, 4999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:46:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 02:46:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2022-01-10 02:46:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 285 states have (on average 1.224561403508772) internal successors, (349), 300 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 02:46:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 349 transitions. [2022-01-10 02:46:55,828 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 349 transitions. Word has length 67 [2022-01-10 02:46:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:46:55,829 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 349 transitions. [2022-01-10 02:46:55,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 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 02:46:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 349 transitions. [2022-01-10 02:46:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 02:46:55,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:46:55,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:46:55,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 02:46:56,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 02:46:56,040 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 02:46:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:46:56,040 INFO L85 PathProgramCache]: Analyzing trace with hash -552283948, now seen corresponding path program 1 times [2022-01-10 02:46:56,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 02:46:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484513012] [2022-01-10 02:46:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:46:56,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 02:46:56,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 02:46:56,042 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 02:46:56,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 02:46:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:46:56,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 02:46:56,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:46:56,754 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 02:46:56,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:46:56,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 02:46:56,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484513012] [2022-01-10 02:46:56,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484513012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:46:56,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:46:56,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-10 02:46:56,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365977105] [2022-01-10 02:46:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:46:56,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 02:46:56,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 02:46:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 02:46:56,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2022-01-10 02:46:56,756 INFO L87 Difference]: Start difference. First operand 301 states and 349 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)