/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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:31:04,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:31:04,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:31:04,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:31:04,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:31:04,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:31:04,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:31:04,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:31:04,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:31:04,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:31:04,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:31:04,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:31:04,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:31:04,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:31:04,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:31:04,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:31:04,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:31:04,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:31:04,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:31:04,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:31:04,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:31:04,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:31:04,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:31:04,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:31:04,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:31:04,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:31:04,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:31:04,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:31:04,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:31:04,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:31:04,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:31:04,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:31:04,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:31:04,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:31:04,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:31:04,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:31:04,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:31:04,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:31:04,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:31:04,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:31:04,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:31:04,320 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 06:31:04,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:31:04,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:31:04,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:31:04,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:31:04,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:31:04,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:31:04,350 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:31:04,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:31:04,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:31:04,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:31:04,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:31:04,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:31:04,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:31:04,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:31:04,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:31:04,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:31:04,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:31:04,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:31:04,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:31:04,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:31:04,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:31:04,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:31:04,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:31:04,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:31:04,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:31:04,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:31:04,356 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:31:04,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:31:04,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:31:04,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:31:04,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:31:04,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:31:04,611 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:31:04,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:31:04,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a496a8f/d383ef3974ce4edcae3ba2149dfdaf89/FLAG35508c1f8 [2022-01-11 06:31:05,129 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:31:05,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-11 06:31:05,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a496a8f/d383ef3974ce4edcae3ba2149dfdaf89/FLAG35508c1f8 [2022-01-11 06:31:05,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a496a8f/d383ef3974ce4edcae3ba2149dfdaf89 [2022-01-11 06:31:05,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:31:05,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:31:05,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:31:05,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:31:05,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:31:05,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdfd283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05, skipping insertion in model container [2022-01-11 06:31:05,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:31:05,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:31:05,726 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-11 06:31:05,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:31:05,789 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:31:05,845 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-11 06:31:05,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:31:05,880 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:31:05,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05 WrapperNode [2022-01-11 06:31:05,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:31:05,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:31:05,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:31:05,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:31:05,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,948 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 414 [2022-01-11 06:31:05,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:31:05,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:31:05,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:31:05,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:31:05,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:05,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:31:05,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:31:05,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:31:05,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:31:06,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (1/1) ... [2022-01-11 06:31:06,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:31:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:31:06,049 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 06:31:06,063 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 06:31:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:31:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:31:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:31:06,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:31:06,163 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:31:06,164 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:31:06,614 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:31:06,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:31:06,622 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:31:06,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:06 BoogieIcfgContainer [2022-01-11 06:31:06,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:31:06,625 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:31:06,625 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:31:06,626 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:31:06,629 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:06" (1/1) ... [2022-01-11 06:31:06,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:31:06 BasicIcfg [2022-01-11 06:31:06,990 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:31:06,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:31:06,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:31:06,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:31:06,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:31:05" (1/4) ... [2022-01-11 06:31:06,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5994ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:31:06, skipping insertion in model container [2022-01-11 06:31:06,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:31:05" (2/4) ... [2022-01-11 06:31:06,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5994ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:31:06, skipping insertion in model container [2022-01-11 06:31:06,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:31:06" (3/4) ... [2022-01-11 06:31:06,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5994ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:31:06, skipping insertion in model container [2022-01-11 06:31:06,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:31:06" (4/4) ... [2022-01-11 06:31:07,000 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:31:07,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:31:07,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:31:07,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:31:07,063 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 06:31:07,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:31:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 06:31:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 06:31:07,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:07,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:31:07,088 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2118724282, now seen corresponding path program 1 times [2022-01-11 06:31:07,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:07,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537603512] [2022-01-11 06:31:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:07,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:07,587 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 06:31:07,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537603512] [2022-01-11 06:31:07,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537603512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:07,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:07,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:07,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057841778] [2022-01-11 06:31:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:07,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:07,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:07,623 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:07,698 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2022-01-11 06:31:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:07,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-11 06:31:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:07,714 INFO L225 Difference]: With dead ends: 260 [2022-01-11 06:31:07,714 INFO L226 Difference]: Without dead ends: 171 [2022-01-11 06:31:07,724 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 06:31:07,728 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 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 06:31:07,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-11 06:31:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2022-01-11 06:31:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 06:31:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2022-01-11 06:31:07,786 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2022-01-11 06:31:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:07,787 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2022-01-11 06:31:07,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:31:07,787 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2022-01-11 06:31:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 06:31:07,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:07,790 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 06:31:07,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:31:07,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1806294395, now seen corresponding path program 1 times [2022-01-11 06:31:07,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:07,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513986905] [2022-01-11 06:31:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:07,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:07,991 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 06:31:07,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:07,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513986905] [2022-01-11 06:31:07,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513986905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:07,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:07,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:07,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146000453] [2022-01-11 06:31:07,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:07,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:07,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:07,996 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. 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 06:31:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:08,041 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2022-01-11 06:31:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:08,041 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 06:31:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:08,045 INFO L225 Difference]: With dead ends: 421 [2022-01-11 06:31:08,046 INFO L226 Difference]: Without dead ends: 279 [2022-01-11 06:31:08,051 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 06:31:08,052 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 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 06:31:08,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-01-11 06:31:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2022-01-11 06:31:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 06:31:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2022-01-11 06:31:08,080 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2022-01-11 06:31:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:08,081 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2022-01-11 06:31:08,081 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 06:31:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2022-01-11 06:31:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 06:31:08,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:08,088 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 06:31:08,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:31:08,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1584428389, now seen corresponding path program 1 times [2022-01-11 06:31:08,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:08,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588781769] [2022-01-11 06:31:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:08,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:08,249 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 06:31:08,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588781769] [2022-01-11 06:31:08,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588781769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:08,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:08,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:08,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658841966] [2022-01-11 06:31:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:08,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:08,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:08,252 INFO L87 Difference]: Start difference. First operand 277 states and 424 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 06:31:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:08,275 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2022-01-11 06:31:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:08,276 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 06:31:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:08,278 INFO L225 Difference]: With dead ends: 713 [2022-01-11 06:31:08,278 INFO L226 Difference]: Without dead ends: 463 [2022-01-11 06:31:08,283 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 06:31:08,287 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 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 06:31:08,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-11 06:31:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2022-01-11 06:31:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 06:31:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2022-01-11 06:31:08,320 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2022-01-11 06:31:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:08,321 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2022-01-11 06:31:08,321 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 06:31:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2022-01-11 06:31:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 06:31:08,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:08,324 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 06:31:08,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:31:08,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:08,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1142682694, now seen corresponding path program 1 times [2022-01-11 06:31:08,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:08,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340124390] [2022-01-11 06:31:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:08,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:08,495 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 06:31:08,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:08,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340124390] [2022-01-11 06:31:08,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340124390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:08,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:08,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742116682] [2022-01-11 06:31:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:08,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:08,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:08,497 INFO L87 Difference]: Start difference. First operand 461 states and 712 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 06:31:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:08,527 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2022-01-11 06:31:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:08,528 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 06:31:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:08,533 INFO L225 Difference]: With dead ends: 1201 [2022-01-11 06:31:08,533 INFO L226 Difference]: Without dead ends: 767 [2022-01-11 06:31:08,533 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 06:31:08,539 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 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 06:31:08,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-01-11 06:31:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2022-01-11 06:31:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states 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 06:31:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2022-01-11 06:31:08,573 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2022-01-11 06:31:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:08,575 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2022-01-11 06:31:08,575 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 06:31:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2022-01-11 06:31:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 06:31:08,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:08,576 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 06:31:08,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:31:08,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2136000644, now seen corresponding path program 1 times [2022-01-11 06:31:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347615215] [2022-01-11 06:31:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:08,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:08,856 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 06:31:08,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347615215] [2022-01-11 06:31:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347615215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:08,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:31:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223318267] [2022-01-11 06:31:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:31:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:31:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:31:08,858 INFO L87 Difference]: Start difference. First operand 765 states and 1180 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 06:31:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:09,883 INFO L93 Difference]: Finished difference Result 5015 states and 7783 transitions. [2022-01-11 06:31:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:31:09,883 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 06:31:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:09,899 INFO L225 Difference]: With dead ends: 5015 [2022-01-11 06:31:09,900 INFO L226 Difference]: Without dead ends: 4277 [2022-01-11 06:31:09,901 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 06:31:09,902 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 750 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:09,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1247 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:31:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-01-11 06:31:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 2669. [2022-01-11 06:31:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2668 states have (on average 1.5457271364317842) internal successors, (4124), 2668 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states 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 06:31:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4124 transitions. [2022-01-11 06:31:10,275 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4124 transitions. Word has length 52 [2022-01-11 06:31:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:10,277 INFO L470 AbstractCegarLoop]: Abstraction has 2669 states and 4124 transitions. [2022-01-11 06:31:10,280 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 06:31:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4124 transitions. [2022-01-11 06:31:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:31:10,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:10,283 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 06:31:10,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:31:10,283 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1668067956, now seen corresponding path program 1 times [2022-01-11 06:31:10,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673517042] [2022-01-11 06:31:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:10,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:10,596 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 06:31:10,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:10,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673517042] [2022-01-11 06:31:10,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673517042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:10,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:10,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:31:10,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602868578] [2022-01-11 06:31:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:10,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:31:10,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:31:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:31:10,598 INFO L87 Difference]: Start difference. First operand 2669 states and 4124 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 06:31:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:13,467 INFO L93 Difference]: Finished difference Result 13935 states and 21585 transitions. [2022-01-11 06:31:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:31:13,468 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 06:31:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:13,512 INFO L225 Difference]: With dead ends: 13935 [2022-01-11 06:31:13,512 INFO L226 Difference]: Without dead ends: 11293 [2022-01-11 06:31:13,519 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 06:31:13,520 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 892 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:13,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1070 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:31:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11293 states. [2022-01-11 06:31:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11293 to 5309. [2022-01-11 06:31:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 1.5244913338357198) internal successors, (8092), 5308 states have internal predecessors, (8092), 0 states have call successors, (0), 0 states 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 06:31:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 8092 transitions. [2022-01-11 06:31:15,160 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 8092 transitions. Word has length 54 [2022-01-11 06:31:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:15,161 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 8092 transitions. [2022-01-11 06:31:15,161 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 06:31:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 8092 transitions. [2022-01-11 06:31:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 06:31:15,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:15,162 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 06:31:15,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:31:15,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash 169512693, now seen corresponding path program 1 times [2022-01-11 06:31:15,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:15,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783030192] [2022-01-11 06:31:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:15,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:15,270 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 06:31:15,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783030192] [2022-01-11 06:31:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783030192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:15,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:15,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:31:15,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016474154] [2022-01-11 06:31:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:15,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:31:15,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:15,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:31:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:31:15,272 INFO L87 Difference]: Start difference. First operand 5309 states and 8092 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 06:31:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:18,565 INFO L93 Difference]: Finished difference Result 10347 states and 15711 transitions. [2022-01-11 06:31:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:31:18,566 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 06:31:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:18,600 INFO L225 Difference]: With dead ends: 10347 [2022-01-11 06:31:18,600 INFO L226 Difference]: Without dead ends: 10345 [2022-01-11 06:31:18,602 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 06:31:18,603 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 359 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 566 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 06:31:18,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 566 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:31:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2022-01-11 06:31:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 5565. [2022-01-11 06:31:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 5564 states have (on average 1.5003594536304816) internal successors, (8348), 5564 states have internal predecessors, (8348), 0 states have call successors, (0), 0 states 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 06:31:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 8348 transitions. [2022-01-11 06:31:20,311 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 8348 transitions. Word has length 55 [2022-01-11 06:31:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:20,311 INFO L470 AbstractCegarLoop]: Abstraction has 5565 states and 8348 transitions. [2022-01-11 06:31:20,311 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 06:31:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 8348 transitions. [2022-01-11 06:31:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 06:31:20,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:20,312 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 06:31:20,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:31:20,313 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 960935793, now seen corresponding path program 1 times [2022-01-11 06:31:20,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:20,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006313234] [2022-01-11 06:31:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:20,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:20,443 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 06:31:20,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006313234] [2022-01-11 06:31:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006313234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:31:20,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:31:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:31:20,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831229178] [2022-01-11 06:31:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:31:20,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:31:20,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:31:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:31:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:31:20,445 INFO L87 Difference]: Start difference. First operand 5565 states and 8348 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 06:31:22,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:31:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:31:25,040 INFO L93 Difference]: Finished difference Result 13899 states and 20864 transitions. [2022-01-11 06:31:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:31:25,043 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 06:31:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:31:25,059 INFO L225 Difference]: With dead ends: 13899 [2022-01-11 06:31:25,059 INFO L226 Difference]: Without dead ends: 8361 [2022-01-11 06:31:25,066 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 06:31:25,067 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 90 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:31:25,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 309 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-11 06:31:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8361 states. [2022-01-11 06:31:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8361 to 8359. [2022-01-11 06:31:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8359 states, 8358 states have (on average 1.4929408949509453) internal successors, (12478), 8358 states have internal predecessors, (12478), 0 states have call successors, (0), 0 states 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 06:31:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8359 states to 8359 states and 12478 transitions. [2022-01-11 06:31:27,493 INFO L78 Accepts]: Start accepts. Automaton has 8359 states and 12478 transitions. Word has length 56 [2022-01-11 06:31:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:31:27,493 INFO L470 AbstractCegarLoop]: Abstraction has 8359 states and 12478 transitions. [2022-01-11 06:31:27,493 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 06:31:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 8359 states and 12478 transitions. [2022-01-11 06:31:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:31:27,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:31:27,498 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] [2022-01-11 06:31:27,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:31:27,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:31:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:31:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1297694385, now seen corresponding path program 1 times [2022-01-11 06:31:27,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:31:27,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774549527] [2022-01-11 06:31:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:27,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:31:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:27,847 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 06:31:27,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:31:27,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774549527] [2022-01-11 06:31:27,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774549527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:31:27,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091159673] [2022-01-11 06:31:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:31:27,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:31:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:31:27,849 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 06:31:27,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 06:31:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:31:28,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-11 06:31:28,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:31:33,662 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 06:31:33,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:31:40,125 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (div (mod (+ (* 4294967040 (mod (div c_~r1~0Int 128) 2)) c_~r1~0Int 1) 4294967296) 1) 256))) (let ((.cse1 (mod (div .cse0 128) 2))) (< (+ (* (mod (+ .cse0 (* 2147483392 .cse1)) 2147483648) 2) 4) (+ (* .cse1 4294967040) .cse0 (* 2 (mod 4 2147483648)))))) is different from false