/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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:33:03,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:33:03,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:33:03,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:33:03,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:33:03,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:33:03,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:33:03,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:33:03,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:33:03,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:33:03,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:33:03,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:33:03,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:33:03,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:33:03,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:33:03,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:33:03,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:33:03,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:33:03,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:33:03,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:33:04,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:33:04,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:33:04,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:33:04,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:33:04,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:33:04,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:33:04,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:33:04,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:33:04,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:33:04,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:33:04,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:33:04,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:33:04,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:33:04,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:33:04,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:33:04,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:33:04,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:33:04,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:33:04,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:33:04,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:33:04,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:33:04,044 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 06:33:04,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:33:04,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:33:04,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:33:04,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:33:04,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:33:04,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:33:04,068 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:33:04,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:33:04,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:33:04,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:33:04,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:33:04,070 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:33:04,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:33:04,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:33:04,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:33:04,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:33:04,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:33:04,262 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:33:04,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:33:04,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293b9a8e/a188f41ab22747ab8d98b2c2007149ae/FLAG082fa8882 [2022-01-11 06:33:04,686 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:33:04,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:33:04,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293b9a8e/a188f41ab22747ab8d98b2c2007149ae/FLAG082fa8882 [2022-01-11 06:33:05,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293b9a8e/a188f41ab22747ab8d98b2c2007149ae [2022-01-11 06:33:05,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:33:05,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:33:05,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:33:05,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:33:05,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:33:05,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138d09cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05, skipping insertion in model container [2022-01-11 06:33:05,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:33:05,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:33:05,349 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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2022-01-11 06:33:05,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:33:05,425 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:33:05,465 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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5375,5388] [2022-01-11 06:33:05,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:33:05,490 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:33:05,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05 WrapperNode [2022-01-11 06:33:05,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:33:05,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:33:05,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:33:05,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:33:05,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,547 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 410 [2022-01-11 06:33:05,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:33:05,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:33:05,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:33:05,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:33:05,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:33:05,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:33:05,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:33:05,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:33:05,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (1/1) ... [2022-01-11 06:33:05,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:33:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:33:05,589 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 06:33:05,591 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 06:33:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:33:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:33:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:33:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:33:05,680 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:33:05,681 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:33:06,026 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:33:06,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:33:06,047 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:33:06,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:33:06 BoogieIcfgContainer [2022-01-11 06:33:06,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:33:06,049 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:33:06,049 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:33:06,050 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:33:06,051 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:33:06" (1/1) ... [2022-01-11 06:33:06,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:33:06 BasicIcfg [2022-01-11 06:33:06,378 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:33:06,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:33:06,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:33:06,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:33:06,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:33:05" (1/4) ... [2022-01-11 06:33:06,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4588b0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:33:06, skipping insertion in model container [2022-01-11 06:33:06,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:33:05" (2/4) ... [2022-01-11 06:33:06,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4588b0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:33:06, skipping insertion in model container [2022-01-11 06:33:06,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:33:06" (3/4) ... [2022-01-11 06:33:06,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4588b0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:33:06, skipping insertion in model container [2022-01-11 06:33:06,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:33:06" (4/4) ... [2022-01-11 06:33:06,386 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:33:06,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:33:06,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:33:06,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:33:06,443 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 06:33:06,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:33:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 110 states have (on average 1.6818181818181819) internal successors, (185), 111 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 06:33:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 06:33:06,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:06,461 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] [2022-01-11 06:33:06,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash -409759279, now seen corresponding path program 1 times [2022-01-11 06:33:06,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:06,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322219244] [2022-01-11 06:33:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:06,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:06,840 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 06:33:06,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:06,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322219244] [2022-01-11 06:33:06,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322219244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:06,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:06,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:06,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465295224] [2022-01-11 06:33:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:06,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:06,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:06,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:06,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:06,870 INFO L87 Difference]: Start difference. First operand has 112 states, 110 states have (on average 1.6818181818181819) internal successors, (185), 111 states have internal predecessors, (185), 0 states have call successors, (0), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 06:33:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:06,924 INFO L93 Difference]: Finished difference Result 266 states and 425 transitions. [2022-01-11 06:33:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-11 06:33:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:06,932 INFO L225 Difference]: With dead ends: 266 [2022-01-11 06:33:06,932 INFO L226 Difference]: Without dead ends: 175 [2022-01-11 06:33:06,934 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 06:33:06,936 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 130 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:06,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-11 06:33:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-01-11 06:33:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.505813953488372) internal successors, (259), 172 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 06:33:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 259 transitions. [2022-01-11 06:33:06,972 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 259 transitions. Word has length 49 [2022-01-11 06:33:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:06,973 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 259 transitions. [2022-01-11 06:33:06,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 06:33:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 259 transitions. [2022-01-11 06:33:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 06:33:06,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:06,974 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] [2022-01-11 06:33:06,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:33:06,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1241512748, now seen corresponding path program 1 times [2022-01-11 06:33:06,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:06,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999198397] [2022-01-11 06:33:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:06,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:07,090 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 06:33:07,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:07,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999198397] [2022-01-11 06:33:07,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999198397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:07,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:07,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:07,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16639880] [2022-01-11 06:33:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:07,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:07,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:07,095 INFO L87 Difference]: Start difference. First operand 173 states and 259 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:33:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:07,131 INFO L93 Difference]: Finished difference Result 433 states and 671 transitions. [2022-01-11 06:33:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-11 06:33:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:07,133 INFO L225 Difference]: With dead ends: 433 [2022-01-11 06:33:07,133 INFO L226 Difference]: Without dead ends: 287 [2022-01-11 06:33:07,134 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 06:33:07,135 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 108 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 329 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 06:33:07,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-11 06:33:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-01-11 06:33:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.5352112676056338) internal successors, (436), 284 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 06:33:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 436 transitions. [2022-01-11 06:33:07,149 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 436 transitions. Word has length 50 [2022-01-11 06:33:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:07,149 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 436 transitions. [2022-01-11 06:33:07,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:33:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 436 transitions. [2022-01-11 06:33:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 06:33:07,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:07,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:07,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:33:07,151 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:07,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1111834318, now seen corresponding path program 1 times [2022-01-11 06:33:07,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:07,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072224712] [2022-01-11 06:33:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:07,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:07,254 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 06:33:07,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:07,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072224712] [2022-01-11 06:33:07,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072224712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:07,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:07,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:07,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733861508] [2022-01-11 06:33:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:07,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:07,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:07,257 INFO L87 Difference]: Start difference. First operand 285 states and 436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:07,276 INFO L93 Difference]: Finished difference Result 737 states and 1150 transitions. [2022-01-11 06:33:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 06:33:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:07,280 INFO L225 Difference]: With dead ends: 737 [2022-01-11 06:33:07,280 INFO L226 Difference]: Without dead ends: 479 [2022-01-11 06:33:07,285 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 06:33:07,288 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 314 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 06:33:07,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-01-11 06:33:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2022-01-11 06:33:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.546218487394958) internal successors, (736), 476 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 06:33:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 736 transitions. [2022-01-11 06:33:07,309 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 736 transitions. Word has length 51 [2022-01-11 06:33:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 736 transitions. [2022-01-11 06:33:07,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 736 transitions. [2022-01-11 06:33:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 06:33:07,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:07,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:07,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:33:07,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:07,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 988416021, now seen corresponding path program 1 times [2022-01-11 06:33:07,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:07,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059065894] [2022-01-11 06:33:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:07,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:07,516 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 06:33:07,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:07,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059065894] [2022-01-11 06:33:07,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059065894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:07,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:07,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:33:07,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475709059] [2022-01-11 06:33:07,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:07,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:33:07,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:07,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:33:07,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:33:07,519 INFO L87 Difference]: Start difference. First operand 477 states and 736 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:08,052 INFO L93 Difference]: Finished difference Result 3109 states and 4869 transitions. [2022-01-11 06:33:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:33:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 06:33:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:08,062 INFO L225 Difference]: With dead ends: 3109 [2022-01-11 06:33:08,062 INFO L226 Difference]: Without dead ends: 2659 [2022-01-11 06:33:08,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:33:08,070 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 914 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:08,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 1125 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:33:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-01-11 06:33:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 1649. [2022-01-11 06:33:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 1.5606796116504855) internal successors, (2572), 1648 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states 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 06:33:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2572 transitions. [2022-01-11 06:33:08,243 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2572 transitions. Word has length 52 [2022-01-11 06:33:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:08,243 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2572 transitions. [2022-01-11 06:33:08,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2572 transitions. [2022-01-11 06:33:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 06:33:08,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:08,245 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] [2022-01-11 06:33:08,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:33:08,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:08,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:08,246 INFO L85 PathProgramCache]: Analyzing trace with hash -895978741, now seen corresponding path program 1 times [2022-01-11 06:33:08,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:08,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024444387] [2022-01-11 06:33:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:08,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:08,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:08,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024444387] [2022-01-11 06:33:08,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024444387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:08,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:08,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:08,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465025315] [2022-01-11 06:33:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:08,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:08,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:08,353 INFO L87 Difference]: Start difference. First operand 1649 states and 2572 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 06:33:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:08,602 INFO L93 Difference]: Finished difference Result 4357 states and 6798 transitions. [2022-01-11 06:33:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:08,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-11 06:33:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:08,611 INFO L225 Difference]: With dead ends: 4357 [2022-01-11 06:33:08,611 INFO L226 Difference]: Without dead ends: 2735 [2022-01-11 06:33:08,613 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 06:33:08,613 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 369 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 06:33:08,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 369 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2022-01-11 06:33:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2733. [2022-01-11 06:33:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2732 states have (on average 1.5446559297218154) internal successors, (4220), 2732 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states 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 06:33:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4220 transitions. [2022-01-11 06:33:08,821 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4220 transitions. Word has length 53 [2022-01-11 06:33:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:08,821 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4220 transitions. [2022-01-11 06:33:08,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 06:33:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4220 transitions. [2022-01-11 06:33:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:33:08,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:08,823 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] [2022-01-11 06:33:08,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:33:08,823 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1443031922, now seen corresponding path program 1 times [2022-01-11 06:33:08,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501264608] [2022-01-11 06:33:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:08,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:09,023 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 06:33:09,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501264608] [2022-01-11 06:33:09,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501264608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:09,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:09,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:33:09,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914017396] [2022-01-11 06:33:09,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:09,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:33:09,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:33:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:33:09,025 INFO L87 Difference]: Start difference. First operand 2733 states and 4220 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:33:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:11,362 INFO L93 Difference]: Finished difference Result 14271 states and 22089 transitions. [2022-01-11 06:33:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:33:11,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 06:33:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:11,398 INFO L225 Difference]: With dead ends: 14271 [2022-01-11 06:33:11,398 INFO L226 Difference]: Without dead ends: 11565 [2022-01-11 06:33:11,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:33:11,405 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 913 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:11,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 1094 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 06:33:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11565 states. [2022-01-11 06:33:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11565 to 5437. [2022-01-11 06:33:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 1.523914643119941) internal successors, (8284), 5436 states have internal predecessors, (8284), 0 states have call successors, (0), 0 states 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 06:33:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8284 transitions. [2022-01-11 06:33:12,818 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8284 transitions. Word has length 54 [2022-01-11 06:33:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:12,818 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8284 transitions. [2022-01-11 06:33:12,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:33:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8284 transitions. [2022-01-11 06:33:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 06:33:12,819 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:12,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:12,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:33:12,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1785303008, now seen corresponding path program 1 times [2022-01-11 06:33:12,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:12,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005440784] [2022-01-11 06:33:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:12,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:12,917 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 06:33:12,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005440784] [2022-01-11 06:33:12,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005440784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:12,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:12,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:33:12,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440940448] [2022-01-11 06:33:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:12,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:33:12,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:33:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:33:12,920 INFO L87 Difference]: Start difference. First operand 5437 states and 8284 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:15,587 INFO L93 Difference]: Finished difference Result 10603 states and 16095 transitions. [2022-01-11 06:33:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:33:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 06:33:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:15,652 INFO L225 Difference]: With dead ends: 10603 [2022-01-11 06:33:15,652 INFO L226 Difference]: Without dead ends: 10601 [2022-01-11 06:33:15,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:33:15,659 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 368 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:33:15,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 572 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10601 states. [2022-01-11 06:33:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10601 to 5693. [2022-01-11 06:33:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5693 states, 5692 states have (on average 1.500351370344343) internal successors, (8540), 5692 states have internal predecessors, (8540), 0 states have call successors, (0), 0 states 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 06:33:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 8540 transitions. [2022-01-11 06:33:17,135 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 8540 transitions. Word has length 55 [2022-01-11 06:33:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:17,136 INFO L470 AbstractCegarLoop]: Abstraction has 5693 states and 8540 transitions. [2022-01-11 06:33:17,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 8540 transitions. [2022-01-11 06:33:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 06:33:17,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:17,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:33:17,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:33:17,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 491191211, now seen corresponding path program 1 times [2022-01-11 06:33:17,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272809122] [2022-01-11 06:33:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:17,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:17,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272809122] [2022-01-11 06:33:17,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272809122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:17,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:17,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:17,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730693320] [2022-01-11 06:33:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:17,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:17,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:17,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:17,202 INFO L87 Difference]: Start difference. First operand 5693 states and 8540 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:19,242 INFO L93 Difference]: Finished difference Result 14283 states and 21440 transitions. [2022-01-11 06:33:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:19,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-11 06:33:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:19,255 INFO L225 Difference]: With dead ends: 14283 [2022-01-11 06:33:19,255 INFO L226 Difference]: Without dead ends: 8617 [2022-01-11 06:33:19,260 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 06:33:19,260 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 92 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 279 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 06:33:19,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2022-01-11 06:33:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 8551. [2022-01-11 06:33:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8551 states, 8550 states have (on average 1.4893567251461988) internal successors, (12734), 8550 states have internal predecessors, (12734), 0 states have call successors, (0), 0 states 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 06:33:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8551 states to 8551 states and 12734 transitions. [2022-01-11 06:33:21,303 INFO L78 Accepts]: Start accepts. Automaton has 8551 states and 12734 transitions. Word has length 56 [2022-01-11 06:33:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:21,307 INFO L470 AbstractCegarLoop]: Abstraction has 8551 states and 12734 transitions. [2022-01-11 06:33:21,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8551 states and 12734 transitions. [2022-01-11 06:33:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:33:21,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:21,311 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] [2022-01-11 06:33:21,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:33:21,311 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -66038266, now seen corresponding path program 1 times [2022-01-11 06:33:21,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:21,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846505872] [2022-01-11 06:33:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:21,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:33:21,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846505872] [2022-01-11 06:33:21,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846505872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:33:21,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:33:21,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:33:21,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583668860] [2022-01-11 06:33:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:33:21,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:33:21,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:33:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:33:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:33:21,385 INFO L87 Difference]: Start difference. First operand 8551 states and 12734 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:33:22,902 INFO L93 Difference]: Finished difference Result 14365 states and 21448 transitions. [2022-01-11 06:33:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:33:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-11 06:33:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:33:22,911 INFO L225 Difference]: With dead ends: 14365 [2022-01-11 06:33:22,911 INFO L226 Difference]: Without dead ends: 5843 [2022-01-11 06:33:22,920 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 06:33:22,921 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 332 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 06:33:22,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 332 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:33:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2022-01-11 06:33:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5841. [2022-01-11 06:33:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 5840 states have (on average 1.4852739726027397) internal successors, (8674), 5840 states have internal predecessors, (8674), 0 states have call successors, (0), 0 states 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 06:33:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8674 transitions. [2022-01-11 06:33:24,394 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8674 transitions. Word has length 79 [2022-01-11 06:33:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:33:24,394 INFO L470 AbstractCegarLoop]: Abstraction has 5841 states and 8674 transitions. [2022-01-11 06:33:24,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:33:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8674 transitions. [2022-01-11 06:33:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:33:24,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:33:24,397 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 06:33:24,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:33:24,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:33:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:33:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 459098554, now seen corresponding path program 1 times [2022-01-11 06:33:24,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:33:24,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141864340] [2022-01-11 06:33:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:24,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:33:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:33:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 06:33:24,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:33:24,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141864340] [2022-01-11 06:33:24,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141864340] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:33:24,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428389157] [2022-01-11 06:33:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:33:24,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:33:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:33:24,507 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 06:33:24,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process