/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:04:07,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:04:07,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:04:07,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:04:07,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:04:07,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:04:07,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:04:07,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:04:07,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:04:07,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:04:07,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:04:07,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:04:07,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:04:07,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:04:07,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:04:07,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:04:07,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:04:07,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:04:07,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:04:07,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:04:07,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:04:07,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:04:07,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:04:07,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:04:07,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:04:07,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:04:07,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:04:07,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:04:07,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:04:07,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:04:07,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:04:07,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:04:07,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:04:07,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:04:07,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:04:07,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:04:07,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:04:07,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:04:07,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:04:07,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:04:07,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:04:07,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:04:07,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:04:07,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:04:07,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:04:07,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:04:07,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:04:07,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:04:07,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:04:07,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:04:07,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:04:07,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:04:07,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:04:07,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:04:07,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:04:07,241 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:04:07,241 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:04:07,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:04:07,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:04:07,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:04:07,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:04:07,430 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:04:07,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 13:04:07,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963776cb/8a09532512b24e38b4eb4bda68e1fec1/FLAG206f77063 [2022-01-10 13:04:07,826 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:04:07,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-01-10 13:04:07,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963776cb/8a09532512b24e38b4eb4bda68e1fec1/FLAG206f77063 [2022-01-10 13:04:08,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963776cb/8a09532512b24e38b4eb4bda68e1fec1 [2022-01-10 13:04:08,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:04:08,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:04:08,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:04:08,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:04:08,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:04:08,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe01020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08, skipping insertion in model container [2022-01-10 13:04:08,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:04:08,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:04:08,516 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.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-10 13:04:08,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:04:08,547 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:04:08,599 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.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-01-10 13:04:08,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:04:08,631 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:04:08,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08 WrapperNode [2022-01-10 13:04:08,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:04:08,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:04:08,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:04:08,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:04:08,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,684 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 401 [2022-01-10 13:04:08,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:04:08,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:04:08,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:04:08,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:04:08,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:04:08,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:04:08,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:04:08,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:04:08,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (1/1) ... [2022-01-10 13:04:08,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:04:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:04:08,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:04:08,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:04:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:04:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:04:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:04:08,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:04:08,848 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:04:08,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:04:09,226 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:04:09,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:04:09,234 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:04:09,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:09 BoogieIcfgContainer [2022-01-10 13:04:09,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:04:09,236 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:04:09,237 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:04:09,237 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:04:09,240 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:09" (1/1) ... [2022-01-10 13:04:09,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:04:09 BasicIcfg [2022-01-10 13:04:09,471 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:04:09,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:04:09,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:04:09,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:04:09,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:08" (1/4) ... [2022-01-10 13:04:09,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a8ef17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:09, skipping insertion in model container [2022-01-10 13:04:09,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:08" (2/4) ... [2022-01-10 13:04:09,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a8ef17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:09, skipping insertion in model container [2022-01-10 13:04:09,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:09" (3/4) ... [2022-01-10 13:04:09,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a8ef17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:04:09, skipping insertion in model container [2022-01-10 13:04:09,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:04:09" (4/4) ... [2022-01-10 13:04:09,476 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 13:04:09,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:04:09,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:04:09,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:04:09,514 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:04:09,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:04:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 13:04:09,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:09,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:04:09,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1020185974, now seen corresponding path program 1 times [2022-01-10 13:04:09,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:09,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93455678] [2022-01-10 13:04:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:09,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:09,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:09,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93455678] [2022-01-10 13:04:09,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93455678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:09,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:09,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:09,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610969363] [2022-01-10 13:04:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:09,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:09,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:09,975 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.6990291262135921) internal successors, (175), 104 states have internal predecessors, (175), 0 states have call successors, (0), 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) [2022-01-10 13:04:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:10,046 INFO L93 Difference]: Finished difference Result 250 states and 403 transitions. [2022-01-10 13:04:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:10,050 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 [2022-01-10 13:04:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:10,060 INFO L225 Difference]: With dead ends: 250 [2022-01-10 13:04:10,060 INFO L226 Difference]: Without dead ends: 166 [2022-01-10 13:04:10,062 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 [2022-01-10 13:04:10,066 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 129 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 393 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 [2022-01-10 13:04:10,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 393 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-01-10 13:04:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2022-01-10 13:04:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 163 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 245 transitions. [2022-01-10 13:04:10,113 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 245 transitions. Word has length 48 [2022-01-10 13:04:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:10,114 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 245 transitions. [2022-01-10 13:04:10,114 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) [2022-01-10 13:04:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 245 transitions. [2022-01-10 13:04:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 13:04:10,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:10,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:04:10,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:04:10,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash 226168244, now seen corresponding path program 1 times [2022-01-10 13:04:10,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260630942] [2022-01-10 13:04:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:10,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:10,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:10,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260630942] [2022-01-10 13:04:10,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260630942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:10,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:10,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:10,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451047221] [2022-01-10 13:04:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:10,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:10,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:10,276 INFO L87 Difference]: Start difference. First operand 164 states and 245 transitions. 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) [2022-01-10 13:04:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:10,304 INFO L93 Difference]: Finished difference Result 406 states and 629 transitions. [2022-01-10 13:04:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:10,304 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 [2022-01-10 13:04:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:10,306 INFO L225 Difference]: With dead ends: 406 [2022-01-10 13:04:10,306 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 13:04:10,306 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 [2022-01-10 13:04:10,307 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 332 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 [2022-01-10 13:04:10,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 332 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 13:04:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2022-01-10 13:04:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5338345864661653) internal successors, (408), 266 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 408 transitions. [2022-01-10 13:04:10,319 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 408 transitions. Word has length 48 [2022-01-10 13:04:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:10,319 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 408 transitions. [2022-01-10 13:04:10,319 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) [2022-01-10 13:04:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 408 transitions. [2022-01-10 13:04:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 13:04:10,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:10,320 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] [2022-01-10 13:04:10,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:04:10,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1292371249, now seen corresponding path program 1 times [2022-01-10 13:04:10,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:10,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802431273] [2022-01-10 13:04:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:10,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:10,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:10,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802431273] [2022-01-10 13:04:10,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802431273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:10,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:10,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:10,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66153908] [2022-01-10 13:04:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:10,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:10,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:10,397 INFO L87 Difference]: Start difference. First operand 267 states and 408 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) [2022-01-10 13:04:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:10,412 INFO L93 Difference]: Finished difference Result 683 states and 1066 transitions. [2022-01-10 13:04:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:10,412 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 [2022-01-10 13:04:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:10,414 INFO L225 Difference]: With dead ends: 683 [2022-01-10 13:04:10,414 INFO L226 Difference]: Without dead ends: 443 [2022-01-10 13:04:10,415 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 [2022-01-10 13:04:10,416 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 98 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 317 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 [2022-01-10 13:04:10,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 317 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-10 13:04:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2022-01-10 13:04:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.5454545454545454) internal successors, (680), 440 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 680 transitions. [2022-01-10 13:04:10,453 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 680 transitions. Word has length 49 [2022-01-10 13:04:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:10,453 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 680 transitions. [2022-01-10 13:04:10,453 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) [2022-01-10 13:04:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 680 transitions. [2022-01-10 13:04:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 13:04:10,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:10,454 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] [2022-01-10 13:04:10,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:04:10,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 129158229, now seen corresponding path program 1 times [2022-01-10 13:04:10,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:10,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318879629] [2022-01-10 13:04:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:10,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:10,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:10,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318879629] [2022-01-10 13:04:10,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318879629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:10,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:10,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:10,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76898058] [2022-01-10 13:04:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:10,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:10,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:10,578 INFO L87 Difference]: Start difference. First operand 441 states and 680 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) [2022-01-10 13:04:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:10,599 INFO L93 Difference]: Finished difference Result 1141 states and 1778 transitions. [2022-01-10 13:04:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:10,599 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 [2022-01-10 13:04:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:10,603 INFO L225 Difference]: With dead ends: 1141 [2022-01-10 13:04:10,603 INFO L226 Difference]: Without dead ends: 727 [2022-01-10 13:04:10,604 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 [2022-01-10 13:04:10,611 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 93 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 302 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 [2022-01-10 13:04:10,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-01-10 13:04:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 725. [2022-01-10 13:04:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.5414364640883977) internal successors, (1116), 724 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1116 transitions. [2022-01-10 13:04:10,637 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1116 transitions. Word has length 50 [2022-01-10 13:04:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:10,638 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 1116 transitions. [2022-01-10 13:04:10,638 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) [2022-01-10 13:04:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1116 transitions. [2022-01-10 13:04:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 13:04:10,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:10,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:04:10,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:04:10,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 804479282, now seen corresponding path program 1 times [2022-01-10 13:04:10,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:10,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531795157] [2022-01-10 13:04:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:10,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:10,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531795157] [2022-01-10 13:04:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531795157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:10,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:10,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:04:10,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616607341] [2022-01-10 13:04:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:10,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:04:10,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:04:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:04:10,880 INFO L87 Difference]: Start difference. First operand 725 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:11,624 INFO L93 Difference]: Finished difference Result 4815 states and 7463 transitions. [2022-01-10 13:04:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:04:11,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 13:04:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:11,639 INFO L225 Difference]: With dead ends: 4815 [2022-01-10 13:04:11,639 INFO L226 Difference]: Without dead ends: 4117 [2022-01-10 13:04:11,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 13:04:11,644 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 945 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:11,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 889 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:04:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-01-10 13:04:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 2549. [2022-01-10 13:04:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2548 states have (on average 1.543171114599686) internal successors, (3932), 2548 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3932 transitions. [2022-01-10 13:04:11,985 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3932 transitions. Word has length 51 [2022-01-10 13:04:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:11,987 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3932 transitions. [2022-01-10 13:04:11,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3932 transitions. [2022-01-10 13:04:11,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 13:04:11,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:11,997 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] [2022-01-10 13:04:11,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:04:11,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 463863034, now seen corresponding path program 1 times [2022-01-10 13:04:11,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:11,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458006985] [2022-01-10 13:04:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:11,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:12,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:12,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458006985] [2022-01-10 13:04:12,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458006985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:12,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:12,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:04:12,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602514716] [2022-01-10 13:04:12,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:12,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:04:12,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:04:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:04:12,273 INFO L87 Difference]: Start difference. First operand 2549 states and 3932 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2022-01-10 13:04:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:14,297 INFO L93 Difference]: Finished difference Result 13295 states and 20561 transitions. [2022-01-10 13:04:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:04:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 [2022-01-10 13:04:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:14,331 INFO L225 Difference]: With dead ends: 13295 [2022-01-10 13:04:14,332 INFO L226 Difference]: Without dead ends: 10773 [2022-01-10 13:04:14,335 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 [2022-01-10 13:04:14,336 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 837 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:14,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1236 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 13:04:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10773 states. [2022-01-10 13:04:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10773 to 5069. [2022-01-10 13:04:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 1.520915548539858) internal successors, (7708), 5068 states have internal predecessors, (7708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 7708 transitions. [2022-01-10 13:04:15,645 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 7708 transitions. Word has length 53 [2022-01-10 13:04:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:15,646 INFO L470 AbstractCegarLoop]: Abstraction has 5069 states and 7708 transitions. [2022-01-10 13:04:15,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2022-01-10 13:04:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 7708 transitions. [2022-01-10 13:04:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 13:04:15,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:15,646 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] [2022-01-10 13:04:15,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:04:15,647 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1493865748, now seen corresponding path program 1 times [2022-01-10 13:04:15,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:15,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725511386] [2022-01-10 13:04:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:15,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:15,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:15,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725511386] [2022-01-10 13:04:15,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725511386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:15,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:15,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:04:15,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926253605] [2022-01-10 13:04:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:15,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:04:15,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:04:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:04:15,752 INFO L87 Difference]: Start difference. First operand 5069 states and 7708 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2022-01-10 13:04:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:18,263 INFO L93 Difference]: Finished difference Result 9862 states and 14935 transitions. [2022-01-10 13:04:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:04:18,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 [2022-01-10 13:04:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:18,299 INFO L225 Difference]: With dead ends: 9862 [2022-01-10 13:04:18,299 INFO L226 Difference]: Without dead ends: 9860 [2022-01-10 13:04:18,302 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 [2022-01-10 13:04:18,302 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 335 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 526 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 [2022-01-10 13:04:18,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 526 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:04:18,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9860 states. [2022-01-10 13:04:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9860 to 5325. [2022-01-10 13:04:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5325 states, 5324 states have (on average 1.4958677685950412) internal successors, (7964), 5324 states have internal predecessors, (7964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5325 states to 5325 states and 7964 transitions. [2022-01-10 13:04:19,601 INFO L78 Accepts]: Start accepts. Automaton has 5325 states and 7964 transitions. Word has length 54 [2022-01-10 13:04:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 5325 states and 7964 transitions. [2022-01-10 13:04:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2022-01-10 13:04:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5325 states and 7964 transitions. [2022-01-10 13:04:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 13:04:19,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:19,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:04:19,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:04:19,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -933792489, now seen corresponding path program 1 times [2022-01-10 13:04:19,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:19,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322368503] [2022-01-10 13:04:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:19,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:04:19,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322368503] [2022-01-10 13:04:19,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322368503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:04:19,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:04:19,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:04:19,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597253876] [2022-01-10 13:04:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:04:19,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:04:19,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:04:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:04:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:04:19,706 INFO L87 Difference]: Start difference. First operand 5325 states and 7964 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:21,786 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 [] [2022-01-10 13:04:26,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:04:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:04:26,125 INFO L93 Difference]: Finished difference Result 13179 states and 19712 transitions. [2022-01-10 13:04:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:04:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 13:04:26,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:04:26,281 INFO L225 Difference]: With dead ends: 13179 [2022-01-10 13:04:26,281 INFO L226 Difference]: Without dead ends: 7881 [2022-01-10 13:04:26,287 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 [2022-01-10 13:04:26,288 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 83 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:04:26,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 293 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 13:04:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2022-01-10 13:04:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7879. [2022-01-10 13:04:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7879 states, 7878 states have (on average 1.4864178725564865) internal successors, (11710), 7878 states have internal predecessors, (11710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7879 states to 7879 states and 11710 transitions. [2022-01-10 13:04:28,289 INFO L78 Accepts]: Start accepts. Automaton has 7879 states and 11710 transitions. Word has length 55 [2022-01-10 13:04:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:04:28,290 INFO L470 AbstractCegarLoop]: Abstraction has 7879 states and 11710 transitions. [2022-01-10 13:04:28,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:04:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7879 states and 11710 transitions. [2022-01-10 13:04:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 13:04:28,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:04:28,293 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] [2022-01-10 13:04:28,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:04:28,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:04:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:04:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1164662318, now seen corresponding path program 1 times [2022-01-10 13:04:28,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:04:28,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487047180] [2022-01-10 13:04:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:28,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:04:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 13:04:28,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:04:28,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487047180] [2022-01-10 13:04:28,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487047180] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 13:04:28,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947270535] [2022-01-10 13:04:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:04:28,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 13:04:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:04:28,632 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) [2022-01-10 13:04:28,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 13:04:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:04:29,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 13:04:29,151 INFO L286 TraceCheckSpWp]: Computing forward predicates...