/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:13:32,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:13:32,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:13:32,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:13:32,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:13:32,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:13:32,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:13:32,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:13:32,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:13:32,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:13:32,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:13:32,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:13:32,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:13:32,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:13:32,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:13:32,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:13:32,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:13:32,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:13:32,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:13:32,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:13:32,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:13:32,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:13:32,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:13:32,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:13:32,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 06:13:32,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:13:32,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:13:32,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:13:32,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:13:32,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:13:32,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:13:32,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:13:32,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:13:32,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:13:32,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:13:32,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:13:32,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:13:32,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:13:32,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:13:32,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:13:32,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:13:32,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:13:32,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:13:32,895 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:13:32,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:13:32,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:13:32,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:13:32,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:13:32,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:13:32,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:13:32,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:13:32,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:13:32,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:13:32,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:13:32,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:13:32,900 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:13:32,900 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:13:33,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:13:33,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:13:33,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:13:33,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:13:33,137 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:13:33,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-01-11 06:13:33,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3d23f93/a5d9dc83a3504d00a1254a59cdb9ca7f/FLAGb9afd6eaa [2022-01-11 06:13:33,595 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:13:33,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2022-01-11 06:13:33,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3d23f93/a5d9dc83a3504d00a1254a59cdb9ca7f/FLAGb9afd6eaa [2022-01-11 06:13:33,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3d23f93/a5d9dc83a3504d00a1254a59cdb9ca7f [2022-01-11 06:13:33,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:13:33,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:13:33,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:13:33,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:13:33,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:13:33,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:13:33" (1/1) ... [2022-01-11 06:13:33,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b37af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:33, skipping insertion in model container [2022-01-11 06:13:33,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:13:33" (1/1) ... [2022-01-11 06:13:33,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:13:33,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:13:33,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-01-11 06:13:33,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:13:33,975 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:13:34,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2022-01-11 06:13:34,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:13:34,047 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:13:34,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34 WrapperNode [2022-01-11 06:13:34,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:13:34,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:13:34,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:13:34,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:13:34,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,108 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 434 [2022-01-11 06:13:34,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:13:34,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:13:34,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:13:34,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:13:34,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:13:34,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:13:34,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:13:34,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:13:34,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:34,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:13:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:13:34,187 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) [2022-01-11 06:13:34,206 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 [2022-01-11 06:13:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:13:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:13:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:13:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:13:34,280 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:13:34,281 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:13:34,651 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:13:34,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:13:34,658 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:13:34,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:34 BoogieIcfgContainer [2022-01-11 06:13:34,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:13:34,660 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:13:34,660 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:13:34,663 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:13:34,665 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:34" (1/1) ... [2022-01-11 06:13:35,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:13:35 BasicIcfg [2022-01-11 06:13:35,103 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:13:35,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:13:35,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:13:35,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:13:35,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:13:33" (1/4) ... [2022-01-11 06:13:35,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11470714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:13:35, skipping insertion in model container [2022-01-11 06:13:35,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:13:34" (2/4) ... [2022-01-11 06:13:35,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11470714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:13:35, skipping insertion in model container [2022-01-11 06:13:35,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:13:34" (3/4) ... [2022-01-11 06:13:35,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11470714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:13:35, skipping insertion in model container [2022-01-11 06:13:35,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:13:35" (4/4) ... [2022-01-11 06:13:35,109 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.cTransformedIcfg [2022-01-11 06:13:35,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:13:35,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:13:35,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:13:35,145 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 [2022-01-11 06:13:35,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:13:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:13:35,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:35,161 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] [2022-01-11 06:13:35,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:35,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash 565953173, now seen corresponding path program 1 times [2022-01-11 06:13:35,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:35,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453221136] [2022-01-11 06:13:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:35,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:35,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:35,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453221136] [2022-01-11 06:13:35,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453221136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:35,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:35,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:13:35,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531600686] [2022-01-11 06:13:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:35,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:13:35,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:13:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:13:35,453 INFO L87 Difference]: Start difference. First operand has 142 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 141 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:35,478 INFO L93 Difference]: Finished difference Result 238 states and 394 transitions. [2022-01-11 06:13:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:13:35,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 06:13:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:35,490 INFO L225 Difference]: With dead ends: 238 [2022-01-11 06:13:35,491 INFO L226 Difference]: Without dead ends: 138 [2022-01-11 06:13:35,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:13:35,497 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:35,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-11 06:13:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-01-11 06:13:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.7080291970802919) internal successors, (234), 137 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 234 transitions. [2022-01-11 06:13:35,532 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 234 transitions. Word has length 37 [2022-01-11 06:13:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:35,532 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 234 transitions. [2022-01-11 06:13:35,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 234 transitions. [2022-01-11 06:13:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 06:13:35,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:35,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:13:35,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1444150668, now seen corresponding path program 1 times [2022-01-11 06:13:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501382073] [2022-01-11 06:13:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:35,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:35,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:35,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501382073] [2022-01-11 06:13:35,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501382073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:35,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:35,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:13:35,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573044901] [2022-01-11 06:13:35,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:35,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:13:35,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:13:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:13:35,694 INFO L87 Difference]: Start difference. First operand 138 states and 234 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:35,796 INFO L93 Difference]: Finished difference Result 233 states and 384 transitions. [2022-01-11 06:13:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:13:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-11 06:13:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:35,801 INFO L225 Difference]: With dead ends: 233 [2022-01-11 06:13:35,801 INFO L226 Difference]: Without dead ends: 138 [2022-01-11 06:13:35,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:13:35,803 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 3 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:35,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 884 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:13:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-11 06:13:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-01-11 06:13:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4087591240875912) internal successors, (193), 137 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2022-01-11 06:13:35,812 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 37 [2022-01-11 06:13:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:35,812 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2022-01-11 06:13:35,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2022-01-11 06:13:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:13:35,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:35,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:35,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:13:35,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2133189510, now seen corresponding path program 1 times [2022-01-11 06:13:35,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:35,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168114335] [2022-01-11 06:13:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:35,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:36,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:36,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168114335] [2022-01-11 06:13:36,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168114335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:36,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:36,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:36,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400258708] [2022-01-11 06:13:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:36,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:36,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:36,012 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:13:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:38,166 INFO L93 Difference]: Finished difference Result 311 states and 470 transitions. [2022-01-11 06:13:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:38,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 06:13:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:38,168 INFO L225 Difference]: With dead ends: 311 [2022-01-11 06:13:38,168 INFO L226 Difference]: Without dead ends: 220 [2022-01-11 06:13:38,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,171 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 134 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:38,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 462 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:13:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-11 06:13:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2022-01-11 06:13:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.4838709677419355) internal successors, (322), 217 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 322 transitions. [2022-01-11 06:13:38,185 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 322 transitions. Word has length 77 [2022-01-11 06:13:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:38,185 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 322 transitions. [2022-01-11 06:13:38,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 322 transitions. [2022-01-11 06:13:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:13:38,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:38,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:13:38,187 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 906692872, now seen corresponding path program 1 times [2022-01-11 06:13:38,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:38,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146045862] [2022-01-11 06:13:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:38,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:38,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146045862] [2022-01-11 06:13:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146045862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:38,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:38,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:38,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264079130] [2022-01-11 06:13:38,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:38,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:38,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,351 INFO L87 Difference]: Start difference. First operand 218 states and 322 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:38,373 INFO L93 Difference]: Finished difference Result 536 states and 832 transitions. [2022-01-11 06:13:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 06:13:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:38,378 INFO L225 Difference]: With dead ends: 536 [2022-01-11 06:13:38,378 INFO L226 Difference]: Without dead ends: 365 [2022-01-11 06:13:38,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,388 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 130 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:38,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-01-11 06:13:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 363. [2022-01-11 06:13:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.5303867403314917) internal successors, (554), 362 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 554 transitions. [2022-01-11 06:13:38,416 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 554 transitions. Word has length 77 [2022-01-11 06:13:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:38,416 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 554 transitions. [2022-01-11 06:13:38,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 554 transitions. [2022-01-11 06:13:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:13:38,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:38,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:38,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:13:38,418 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash 675140394, now seen corresponding path program 1 times [2022-01-11 06:13:38,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280397427] [2022-01-11 06:13:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:38,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:38,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:38,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280397427] [2022-01-11 06:13:38,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280397427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:38,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:38,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:38,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647543290] [2022-01-11 06:13:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:38,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:38,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,564 INFO L87 Difference]: Start difference. First operand 363 states and 554 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:38,583 INFO L93 Difference]: Finished difference Result 947 states and 1488 transitions. [2022-01-11 06:13:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-11 06:13:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:38,585 INFO L225 Difference]: With dead ends: 947 [2022-01-11 06:13:38,585 INFO L226 Difference]: Without dead ends: 631 [2022-01-11 06:13:38,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,586 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 125 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:38,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 439 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-01-11 06:13:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 629. [2022-01-11 06:13:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 1.5541401273885351) internal successors, (976), 628 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 976 transitions. [2022-01-11 06:13:38,600 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 976 transitions. Word has length 78 [2022-01-11 06:13:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:38,600 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 976 transitions. [2022-01-11 06:13:38,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 976 transitions. [2022-01-11 06:13:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:13:38,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:38,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:38,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:13:38,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1694098119, now seen corresponding path program 1 times [2022-01-11 06:13:38,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:38,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917884513] [2022-01-11 06:13:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:38,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:38,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:38,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917884513] [2022-01-11 06:13:38,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917884513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:38,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:38,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:38,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235572214] [2022-01-11 06:13:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:38,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:38,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,683 INFO L87 Difference]: Start difference. First operand 629 states and 976 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:38,703 INFO L93 Difference]: Finished difference Result 1697 states and 2674 transitions. [2022-01-11 06:13:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:13:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:38,708 INFO L225 Difference]: With dead ends: 1697 [2022-01-11 06:13:38,708 INFO L226 Difference]: Without dead ends: 1115 [2022-01-11 06:13:38,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,709 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 120 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:38,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 430 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-11 06:13:38,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2022-01-11 06:13:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.5611510791366907) internal successors, (1736), 1112 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1736 transitions. [2022-01-11 06:13:38,730 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1736 transitions. Word has length 79 [2022-01-11 06:13:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:38,730 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1736 transitions. [2022-01-11 06:13:38,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1736 transitions. [2022-01-11 06:13:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:13:38,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:38,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:38,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:13:38,731 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1086196791, now seen corresponding path program 1 times [2022-01-11 06:13:38,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:38,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564064050] [2022-01-11 06:13:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:38,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:38,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:38,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564064050] [2022-01-11 06:13:38,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564064050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:38,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:38,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:38,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556012665] [2022-01-11 06:13:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:38,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:38,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,856 INFO L87 Difference]: Start difference. First operand 1113 states and 1736 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:38,881 INFO L93 Difference]: Finished difference Result 3053 states and 4794 transitions. [2022-01-11 06:13:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-11 06:13:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:38,888 INFO L225 Difference]: With dead ends: 3053 [2022-01-11 06:13:38,888 INFO L226 Difference]: Without dead ends: 1987 [2022-01-11 06:13:38,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:38,890 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 115 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:38,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 421 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2022-01-11 06:13:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1985. [2022-01-11 06:13:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1984 states have (on average 1.5564516129032258) internal successors, (3088), 1984 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 3088 transitions. [2022-01-11 06:13:38,922 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 3088 transitions. Word has length 80 [2022-01-11 06:13:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:38,922 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 3088 transitions. [2022-01-11 06:13:38,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 3088 transitions. [2022-01-11 06:13:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 06:13:38,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:38,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:38,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:13:38,923 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2057140346, now seen corresponding path program 1 times [2022-01-11 06:13:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438437745] [2022-01-11 06:13:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:38,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:39,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:39,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438437745] [2022-01-11 06:13:39,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438437745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:39,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:39,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:13:39,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4952098] [2022-01-11 06:13:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:39,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:13:39,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:13:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:39,003 INFO L87 Difference]: Start difference. First operand 1985 states and 3088 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:39,045 INFO L93 Difference]: Finished difference Result 5477 states and 8530 transitions. [2022-01-11 06:13:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:13:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 06:13:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:39,057 INFO L225 Difference]: With dead ends: 5477 [2022-01-11 06:13:39,057 INFO L226 Difference]: Without dead ends: 3539 [2022-01-11 06:13:39,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:13:39,060 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 110 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:39,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:13:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2022-01-11 06:13:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 3537. [2022-01-11 06:13:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.5429864253393666) internal successors, (5456), 3536 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5456 transitions. [2022-01-11 06:13:39,134 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5456 transitions. Word has length 81 [2022-01-11 06:13:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:39,139 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5456 transitions. [2022-01-11 06:13:39,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5456 transitions. [2022-01-11 06:13:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 06:13:39,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:39,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:39,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:13:39,140 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:39,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:39,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1518925976, now seen corresponding path program 1 times [2022-01-11 06:13:39,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:39,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322562619] [2022-01-11 06:13:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:39,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:39,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322562619] [2022-01-11 06:13:39,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322562619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:39,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:39,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:13:39,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583481419] [2022-01-11 06:13:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:13:39,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:13:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:13:39,439 INFO L87 Difference]: Start difference. First operand 3537 states and 5456 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:43,224 INFO L93 Difference]: Finished difference Result 53041 states and 81600 transitions. [2022-01-11 06:13:43,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 06:13:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 06:13:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:43,396 INFO L225 Difference]: With dead ends: 53041 [2022-01-11 06:13:43,396 INFO L226 Difference]: Without dead ends: 49551 [2022-01-11 06:13:43,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-01-11 06:13:43,415 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 2063 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:43,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2063 Valid, 3300 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 06:13:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49551 states. [2022-01-11 06:13:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49551 to 19857. [2022-01-11 06:13:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19857 states, 19856 states have (on average 1.5366639806607574) internal successors, (30512), 19856 states have internal predecessors, (30512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19857 states to 19857 states and 30512 transitions. [2022-01-11 06:13:44,891 INFO L78 Accepts]: Start accepts. Automaton has 19857 states and 30512 transitions. Word has length 82 [2022-01-11 06:13:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:13:44,892 INFO L470 AbstractCegarLoop]: Abstraction has 19857 states and 30512 transitions. [2022-01-11 06:13:44,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 19857 states and 30512 transitions. [2022-01-11 06:13:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 06:13:44,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:13:44,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:13:44,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:13:44,894 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:13:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:13:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash -908639958, now seen corresponding path program 1 times [2022-01-11 06:13:44,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:13:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690516526] [2022-01-11 06:13:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:13:44,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:13:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:13:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:13:45,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:13:45,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690516526] [2022-01-11 06:13:45,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690516526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:13:45,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:13:45,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:13:45,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760345083] [2022-01-11 06:13:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:13:45,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:13:45,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:13:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:13:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:13:45,493 INFO L87 Difference]: Start difference. First operand 19857 states and 30512 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:13:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:13:59,048 INFO L93 Difference]: Finished difference Result 142111 states and 218487 transitions. [2022-01-11 06:13:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 06:13:59,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 06:13:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:13:59,347 INFO L225 Difference]: With dead ends: 142111 [2022-01-11 06:13:59,348 INFO L226 Difference]: Without dead ends: 122301 [2022-01-11 06:13:59,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-11 06:13:59,395 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 1706 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:13:59,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 2476 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:13:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122301 states. [2022-01-11 06:14:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122301 to 39665. [2022-01-11 06:14:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39665 states, 39664 states have (on average 1.517950786607503) internal successors, (60208), 39664 states have internal predecessors, (60208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39665 states to 39665 states and 60208 transitions. [2022-01-11 06:14:08,633 INFO L78 Accepts]: Start accepts. Automaton has 39665 states and 60208 transitions. Word has length 83 [2022-01-11 06:14:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:08,633 INFO L470 AbstractCegarLoop]: Abstraction has 39665 states and 60208 transitions. [2022-01-11 06:14:08,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 39665 states and 60208 transitions. [2022-01-11 06:14:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 06:14:08,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:08,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:08,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:14:08,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1866305086, now seen corresponding path program 1 times [2022-01-11 06:14:08,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546370562] [2022-01-11 06:14:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:08,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:14:08,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:08,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546370562] [2022-01-11 06:14:08,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546370562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:08,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:08,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:14:08,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649728128] [2022-01-11 06:14:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:08,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:14:08,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:14:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:14:08,776 INFO L87 Difference]: Start difference. First operand 39665 states and 60208 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:25,455 INFO L93 Difference]: Finished difference Result 77205 states and 116835 transitions. [2022-01-11 06:14:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:14:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-11 06:14:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:25,562 INFO L225 Difference]: With dead ends: 77205 [2022-01-11 06:14:25,562 INFO L226 Difference]: Without dead ends: 77203 [2022-01-11 06:14:25,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:14:25,581 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 552 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:25,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 924 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:14:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77203 states. [2022-01-11 06:14:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77203 to 41969. [2022-01-11 06:14:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41969 states, 41968 states have (on average 1.4895158215783455) internal successors, (62512), 41968 states have internal predecessors, (62512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41969 states to 41969 states and 62512 transitions. [2022-01-11 06:14:34,133 INFO L78 Accepts]: Start accepts. Automaton has 41969 states and 62512 transitions. Word has length 84 [2022-01-11 06:14:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:34,133 INFO L470 AbstractCegarLoop]: Abstraction has 41969 states and 62512 transitions. [2022-01-11 06:14:34,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 41969 states and 62512 transitions. [2022-01-11 06:14:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 06:14:34,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:34,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:34,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:14:34,135 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2053054958, now seen corresponding path program 1 times [2022-01-11 06:14:34,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:34,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177743650] [2022-01-11 06:14:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:34,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:14:34,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177743650] [2022-01-11 06:14:34,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177743650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:34,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:34,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:34,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957866542] [2022-01-11 06:14:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:34,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:34,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:34,279 INFO L87 Difference]: Start difference. First operand 41969 states and 62512 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:36,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []