/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.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:14:54,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:14:54,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:14:54,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:14:54,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:14:54,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:14:54,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:14:55,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:14:55,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:14:55,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:14:55,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:14:55,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:14:55,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:14:55,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:14:55,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:14:55,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:14:55,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:14:55,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:14:55,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:14:55,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:14:55,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:14:55,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:14:55,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:14:55,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:14:55,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:14:55,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:14:55,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:14:55,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:14:55,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:14:55,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:14:55,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:14:55,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:14:55,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:14:55,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:14:55,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:14:55,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:14:55,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:14:55,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:14:55,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:14:55,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:14:55,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:14:55,053 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 06:14:55,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:14:55,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:14:55,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:14:55,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:14:55,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:14:55,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:14:55,081 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:14:55,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:14:55,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:14:55,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:14:55,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:14:55,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:14:55,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:14:55,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:14:55,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:14:55,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:14:55,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:14:55,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:14:55,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:14:55,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:14:55,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:14:55,087 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:14:55,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:14:55,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:14:55,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:14:55,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:14:55,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:14:55,306 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:14:55,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2022-01-11 06:14:55,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3998fccc/ac4bab832e7b4278a696eacd56f5ec23/FLAG8e109a487 [2022-01-11 06:14:55,764 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:14:55,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5_overflow.ufo.UNBOUNDED.pals.c [2022-01-11 06:14:55,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3998fccc/ac4bab832e7b4278a696eacd56f5ec23/FLAG8e109a487 [2022-01-11 06:14:55,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3998fccc/ac4bab832e7b4278a696eacd56f5ec23 [2022-01-11 06:14:55,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:14:55,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:14:55,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:14:55,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:14:55,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:14:55,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:14:55" (1/1) ... [2022-01-11 06:14:55,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599e8202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:55, skipping insertion in model container [2022-01-11 06:14:55,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:14:55" (1/1) ... [2022-01-11 06:14:55,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:14:55,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:14:56,137 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.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2022-01-11 06:14:56,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:14:56,153 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:14:56,211 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.5_overflow.ufo.UNBOUNDED.pals.c[11335,11348] [2022-01-11 06:14:56,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:14:56,230 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:14:56,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56 WrapperNode [2022-01-11 06:14:56,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:14:56,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:14:56,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:14:56,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:14:56,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,282 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 312 [2022-01-11 06:14:56,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:14:56,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:14:56,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:14:56,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:14:56,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:14:56,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:14:56,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:14:56,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:14:56,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:56,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:14:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:14:56,356 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 06:14:56,365 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 06:14:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:14:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:14:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:14:56,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:14:56,461 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:14:56,462 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:14:56,864 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:14:56,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:14:56,870 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 06:14:56,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:14:56 BoogieIcfgContainer [2022-01-11 06:14:56,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:14:56,873 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:14:56,873 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:14:56,874 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:14:56,876 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:14:56" (1/1) ... [2022-01-11 06:14:57,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:14:57 BasicIcfg [2022-01-11 06:14:57,202 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:14:57,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:14:57,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:14:57,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:14:57,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:14:55" (1/4) ... [2022-01-11 06:14:57,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee3d370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:14:57, skipping insertion in model container [2022-01-11 06:14:57,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:14:56" (2/4) ... [2022-01-11 06:14:57,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee3d370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:14:57, skipping insertion in model container [2022-01-11 06:14:57,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:14:56" (3/4) ... [2022-01-11 06:14:57,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee3d370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:14:57, skipping insertion in model container [2022-01-11 06:14:57,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:14:57" (4/4) ... [2022-01-11 06:14:57,211 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-11 06:14:57,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:14:57,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:14:57,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:14:57,279 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 06:14:57,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:14:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 06:14:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 06:14:57,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:57,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:57,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -349743886, now seen corresponding path program 1 times [2022-01-11 06:14:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:57,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175732749] [2022-01-11 06:14:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:14:57,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:57,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175732749] [2022-01-11 06:14:57,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175732749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:57,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:57,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:14:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11200689] [2022-01-11 06:14:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:57,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 06:14:57,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 06:14:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 06:14:57,570 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:57,601 INFO L93 Difference]: Finished difference Result 146 states and 243 transitions. [2022-01-11 06:14:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 06:14:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 06:14:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:57,613 INFO L225 Difference]: With dead ends: 146 [2022-01-11 06:14:57,613 INFO L226 Difference]: Without dead ends: 89 [2022-01-11 06:14:57,616 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 06:14:57,619 INFO L933 BasicCegarLoop]: 150 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, 150 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 06:14:57,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-11 06:14:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-11 06:14:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7045454545454546) internal successors, (150), 88 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 06:14:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2022-01-11 06:14:57,661 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 33 [2022-01-11 06:14:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:57,661 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2022-01-11 06:14:57,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:57,663 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2022-01-11 06:14:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 06:14:57,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:57,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:57,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:14:57,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -604480431, now seen corresponding path program 1 times [2022-01-11 06:14:57,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:57,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751068275] [2022-01-11 06:14:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:57,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:57,874 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 06:14:57,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:57,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751068275] [2022-01-11 06:14:57,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751068275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:57,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:57,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:14:57,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617581508] [2022-01-11 06:14:57,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:57,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:14:57,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:14:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:14:57,877 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:57,991 INFO L93 Difference]: Finished difference Result 145 states and 236 transitions. [2022-01-11 06:14:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:14:57,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 06:14:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:57,994 INFO L225 Difference]: With dead ends: 145 [2022-01-11 06:14:57,994 INFO L226 Difference]: Without dead ends: 89 [2022-01-11 06:14:57,997 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 06:14:57,998 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:14:57,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 558 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:14:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-11 06:14:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-11 06:14:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 88 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 06:14:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2022-01-11 06:14:58,004 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 33 [2022-01-11 06:14:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:58,004 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2022-01-11 06:14:58,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2022-01-11 06:14:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:58,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:58,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:58,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:14:58,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -965498049, now seen corresponding path program 1 times [2022-01-11 06:14:58,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:58,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115786801] [2022-01-11 06:14:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:58,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:58,259 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 06:14:58,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:58,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115786801] [2022-01-11 06:14:58,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115786801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:58,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:58,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:58,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073593253] [2022-01-11 06:14:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:58,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:58,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:58,263 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:58,287 INFO L93 Difference]: Finished difference Result 187 states and 273 transitions. [2022-01-11 06:14:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:14:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:58,291 INFO L225 Difference]: With dead ends: 187 [2022-01-11 06:14:58,291 INFO L226 Difference]: Without dead ends: 135 [2022-01-11 06:14:58,294 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 06:14:58,297 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 258 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 06:14:58,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 258 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-01-11 06:14:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-01-11 06:14:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 06:14:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 189 transitions. [2022-01-11 06:14:58,314 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 189 transitions. Word has length 63 [2022-01-11 06:14:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:58,315 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 189 transitions. [2022-01-11 06:14:58,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,315 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 189 transitions. [2022-01-11 06:14:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:58,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:58,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:58,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:14:58,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2007443232, now seen corresponding path program 1 times [2022-01-11 06:14:58,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:58,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941027336] [2022-01-11 06:14:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:58,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:58,515 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 06:14:58,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:58,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941027336] [2022-01-11 06:14:58,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941027336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:58,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:58,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:58,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492002864] [2022-01-11 06:14:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:58,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:58,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:58,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:58,519 INFO L87 Difference]: Start difference. First operand 133 states and 189 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:58,547 INFO L93 Difference]: Finished difference Result 313 states and 473 transitions. [2022-01-11 06:14:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:14:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:58,550 INFO L225 Difference]: With dead ends: 313 [2022-01-11 06:14:58,550 INFO L226 Difference]: Without dead ends: 217 [2022-01-11 06:14:58,553 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 06:14:58,558 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 257 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 06:14:58,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 257 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-11 06:14:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-01-11 06:14:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.485981308411215) internal successors, (318), 214 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 06:14:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 318 transitions. [2022-01-11 06:14:58,578 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 318 transitions. Word has length 63 [2022-01-11 06:14:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:58,580 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 318 transitions. [2022-01-11 06:14:58,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 318 transitions. [2022-01-11 06:14:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:58,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:58,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:58,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:14:58,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:58,588 INFO L85 PathProgramCache]: Analyzing trace with hash 342884097, now seen corresponding path program 1 times [2022-01-11 06:14:58,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:58,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25213053] [2022-01-11 06:14:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:58,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:58,722 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 06:14:58,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25213053] [2022-01-11 06:14:58,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25213053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:58,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:58,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:58,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702632932] [2022-01-11 06:14:58,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:58,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:58,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:58,726 INFO L87 Difference]: Start difference. First operand 215 states and 318 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:58,747 INFO L93 Difference]: Finished difference Result 547 states and 840 transitions. [2022-01-11 06:14:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:14:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:58,750 INFO L225 Difference]: With dead ends: 547 [2022-01-11 06:14:58,750 INFO L226 Difference]: Without dead ends: 369 [2022-01-11 06:14:58,751 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 06:14:58,752 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 256 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 06:14:58,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-11 06:14:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2022-01-11 06:14:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 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 06:14:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2022-01-11 06:14:58,785 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 63 [2022-01-11 06:14:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:58,786 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2022-01-11 06:14:58,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2022-01-11 06:14:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:58,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:58,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:58,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:14:58,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1618387550, now seen corresponding path program 1 times [2022-01-11 06:14:58,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879962532] [2022-01-11 06:14:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:58,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:58,965 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 06:14:58,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:58,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879962532] [2022-01-11 06:14:58,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879962532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:58,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:58,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:14:58,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449621344] [2022-01-11 06:14:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:58,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:14:58,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:14:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:14:58,968 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:14:58,992 INFO L93 Difference]: Finished difference Result 979 states and 1508 transitions. [2022-01-11 06:14:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:14:58,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:14:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:14:58,997 INFO L225 Difference]: With dead ends: 979 [2022-01-11 06:14:58,997 INFO L226 Difference]: Without dead ends: 649 [2022-01-11 06:14:58,998 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 06:14:58,999 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 255 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 06:14:58,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 255 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:14:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-01-11 06:14:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 647. [2022-01-11 06:14:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.520123839009288) internal successors, (982), 646 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 06:14:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 982 transitions. [2022-01-11 06:14:59,042 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 982 transitions. Word has length 63 [2022-01-11 06:14:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:14:59,043 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 982 transitions. [2022-01-11 06:14:59,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:14:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 982 transitions. [2022-01-11 06:14:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:14:59,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:14:59,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:14:59,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:14:59,045 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:14:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:14:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -795527997, now seen corresponding path program 1 times [2022-01-11 06:14:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:14:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370093446] [2022-01-11 06:14:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:14:59,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:14:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:14:59,481 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 06:14:59,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:14:59,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370093446] [2022-01-11 06:14:59,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370093446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:14:59,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:14:59,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:14:59,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648141597] [2022-01-11 06:14:59,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:14:59,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:14:59,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:14:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:14:59,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:14:59,483 INFO L87 Difference]: Start difference. First operand 647 states and 982 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:01,587 INFO L93 Difference]: Finished difference Result 6747 states and 10432 transitions. [2022-01-11 06:15:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:15:01,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 06:15:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:01,610 INFO L225 Difference]: With dead ends: 6747 [2022-01-11 06:15:01,610 INFO L226 Difference]: Without dead ends: 6137 [2022-01-11 06:15:01,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:15:01,613 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 915 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:01,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1748 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:15:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2022-01-11 06:15:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 1255. [2022-01-11 06:15:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.5103668261563) internal successors, (1894), 1254 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states 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 06:15:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1894 transitions. [2022-01-11 06:15:01,926 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1894 transitions. Word has length 63 [2022-01-11 06:15:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:01,926 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1894 transitions. [2022-01-11 06:15:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1894 transitions. [2022-01-11 06:15:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:15:01,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:01,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:15:01,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash -947030329, now seen corresponding path program 1 times [2022-01-11 06:15:01,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:01,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440002808] [2022-01-11 06:15:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:01,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:02,057 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 06:15:02,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:02,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440002808] [2022-01-11 06:15:02,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440002808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:02,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:02,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:15:02,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368039223] [2022-01-11 06:15:02,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:02,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:15:02,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:02,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:15:02,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:15:02,060 INFO L87 Difference]: Start difference. First operand 1255 states and 1894 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:02,762 INFO L93 Difference]: Finished difference Result 3483 states and 5240 transitions. [2022-01-11 06:15:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:15:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:15:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:02,770 INFO L225 Difference]: With dead ends: 3483 [2022-01-11 06:15:02,770 INFO L226 Difference]: Without dead ends: 2265 [2022-01-11 06:15:02,771 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 06:15:02,771 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:02,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 293 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:15:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-01-11 06:15:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2263. [2022-01-11 06:15:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.46684350132626) internal successors, (3318), 2262 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 06:15:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3318 transitions. [2022-01-11 06:15:03,333 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3318 transitions. Word has length 65 [2022-01-11 06:15:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:03,335 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3318 transitions. [2022-01-11 06:15:03,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:03,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3318 transitions. [2022-01-11 06:15:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:15:03,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:03,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:03,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:15:03,337 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -915630615, now seen corresponding path program 1 times [2022-01-11 06:15:03,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:03,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092744788] [2022-01-11 06:15:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:03,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:03,720 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 06:15:03,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:03,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092744788] [2022-01-11 06:15:03,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092744788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:03,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:03,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:15:03,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521694236] [2022-01-11 06:15:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:03,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:15:03,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:15:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:15:03,722 INFO L87 Difference]: Start difference. First operand 2263 states and 3318 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:07,535 INFO L93 Difference]: Finished difference Result 13403 states and 19728 transitions. [2022-01-11 06:15:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:15:07,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:15:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:07,570 INFO L225 Difference]: With dead ends: 13403 [2022-01-11 06:15:07,570 INFO L226 Difference]: Without dead ends: 11177 [2022-01-11 06:15:07,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-11 06:15:07,574 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 904 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:07,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1774 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 06:15:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2022-01-11 06:15:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 2263. [2022-01-11 06:15:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.4597701149425288) internal successors, (3302), 2262 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states 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 06:15:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3302 transitions. [2022-01-11 06:15:08,362 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3302 transitions. Word has length 65 [2022-01-11 06:15:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:08,362 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3302 transitions. [2022-01-11 06:15:08,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3302 transitions. [2022-01-11 06:15:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:15:08,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:08,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:08,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:15:08,364 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:08,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -68958498, now seen corresponding path program 1 times [2022-01-11 06:15:08,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:08,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762766385] [2022-01-11 06:15:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:08,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:08,435 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 06:15:08,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762766385] [2022-01-11 06:15:08,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762766385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:08,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:08,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:15:08,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355452668] [2022-01-11 06:15:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:08,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:15:08,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:15:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:15:08,437 INFO L87 Difference]: Start difference. First operand 2263 states and 3302 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:10,485 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 06:15:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:11,636 INFO L93 Difference]: Finished difference Result 5723 states and 8344 transitions. [2022-01-11 06:15:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:15:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:15:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:11,646 INFO L225 Difference]: With dead ends: 5723 [2022-01-11 06:15:11,646 INFO L226 Difference]: Without dead ends: 3497 [2022-01-11 06:15:11,648 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 06:15:11,649 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 72 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 266 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 06:15:11,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 266 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:15:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2022-01-11 06:15:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3495. [2022-01-11 06:15:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3494 states have (on average 1.4350314825414998) internal successors, (5014), 3494 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states 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 06:15:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5014 transitions. [2022-01-11 06:15:12,763 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5014 transitions. Word has length 65 [2022-01-11 06:15:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:12,764 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 5014 transitions. [2022-01-11 06:15:12,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5014 transitions. [2022-01-11 06:15:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:15:12,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:12,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:12,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:15:12,765 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 745405865, now seen corresponding path program 1 times [2022-01-11 06:15:12,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:12,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995541412] [2022-01-11 06:15:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:12,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:12,886 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 06:15:12,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995541412] [2022-01-11 06:15:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995541412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:12,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:12,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:15:12,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228911088] [2022-01-11 06:15:12,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:12,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:15:12,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:15:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:15:12,888 INFO L87 Difference]: Start difference. First operand 3495 states and 5014 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:14,451 INFO L93 Difference]: Finished difference Result 7997 states and 11530 transitions. [2022-01-11 06:15:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:15:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:15:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:14,463 INFO L225 Difference]: With dead ends: 7997 [2022-01-11 06:15:14,463 INFO L226 Difference]: Without dead ends: 4539 [2022-01-11 06:15:14,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:15:14,467 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 48 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:14,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:15:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2022-01-11 06:15:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4537. [2022-01-11 06:15:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4536 states have (on average 1.433862433862434) internal successors, (6504), 4536 states have internal predecessors, (6504), 0 states have call successors, (0), 0 states 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 06:15:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6504 transitions. [2022-01-11 06:15:15,895 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6504 transitions. Word has length 66 [2022-01-11 06:15:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:15,895 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6504 transitions. [2022-01-11 06:15:15,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6504 transitions. [2022-01-11 06:15:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:15:15,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:15,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:15,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:15:15,897 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1654150529, now seen corresponding path program 1 times [2022-01-11 06:15:15,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603913932] [2022-01-11 06:15:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:15,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:16,020 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 06:15:16,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603913932] [2022-01-11 06:15:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603913932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:16,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:15:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816229668] [2022-01-11 06:15:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:15:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:15:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:15:16,022 INFO L87 Difference]: Start difference. First operand 4537 states and 6504 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:18,200 INFO L93 Difference]: Finished difference Result 6324 states and 9105 transitions. [2022-01-11 06:15:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:15:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 06:15:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:18,211 INFO L225 Difference]: With dead ends: 6324 [2022-01-11 06:15:18,211 INFO L226 Difference]: Without dead ends: 6322 [2022-01-11 06:15:18,212 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 06:15:18,213 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 283 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:18,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 501 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:15:18,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2022-01-11 06:15:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 4633. [2022-01-11 06:15:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4632 states have (on average 1.4145077720207253) internal successors, (6552), 4632 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states 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 06:15:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 6552 transitions. [2022-01-11 06:15:19,729 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 6552 transitions. Word has length 66 [2022-01-11 06:15:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:19,729 INFO L470 AbstractCegarLoop]: Abstraction has 4633 states and 6552 transitions. [2022-01-11 06:15:19,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:15:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 6552 transitions. [2022-01-11 06:15:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 06:15:19,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:19,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:19,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:15:19,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash -681766910, now seen corresponding path program 1 times [2022-01-11 06:15:19,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:19,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570205035] [2022-01-11 06:15:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:19,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:15:19,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:19,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570205035] [2022-01-11 06:15:19,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570205035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:15:19,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:15:19,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:15:19,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853995308] [2022-01-11 06:15:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:15:19,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:15:19,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:15:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:15:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:15:19,862 INFO L87 Difference]: Start difference. First operand 4633 states and 6552 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 06:15:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:15:21,303 INFO L93 Difference]: Finished difference Result 8218 states and 11629 transitions. [2022-01-11 06:15:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:15:21,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-11 06:15:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:15:21,309 INFO L225 Difference]: With dead ends: 8218 [2022-01-11 06:15:21,309 INFO L226 Difference]: Without dead ends: 3624 [2022-01-11 06:15:21,313 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 06:15:21,314 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 51 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:15:21,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:15:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-01-11 06:15:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3472. [2022-01-11 06:15:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 3471 states have (on average 1.4070872947277442) internal successors, (4884), 3471 states have internal predecessors, (4884), 0 states have call successors, (0), 0 states 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 06:15:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 4884 transitions. [2022-01-11 06:15:22,426 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 4884 transitions. Word has length 94 [2022-01-11 06:15:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:15:22,426 INFO L470 AbstractCegarLoop]: Abstraction has 3472 states and 4884 transitions. [2022-01-11 06:15:22,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 06:15:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 4884 transitions. [2022-01-11 06:15:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 06:15:22,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:15:22,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:15:22,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:15:22,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:15:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:15:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash -771202815, now seen corresponding path program 1 times [2022-01-11 06:15:22,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:15:22,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785222722] [2022-01-11 06:15:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:22,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:15:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:15:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:15:22,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:15:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785222722] [2022-01-11 06:15:22,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785222722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:15:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899419244] [2022-01-11 06:15:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:15:22,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:15:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:15:22,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:15:22,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process