/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:51:57,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:51:57,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:51:57,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:51:57,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:51:57,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:51:57,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:51:57,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:51:57,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:51:57,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:51:57,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:51:57,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:51:57,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:51:57,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:51:57,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:51:57,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:51:57,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:51:57,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:51:57,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:51:57,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:51:57,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:51:57,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:51:57,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:51:57,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:51:57,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:51:57,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:51:57,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:51:57,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:51:57,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:51:57,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:51:57,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:51:57,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:51:57,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:51:57,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:51:57,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:51:57,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:51:57,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:51:57,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:51:57,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:51:57,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:51:57,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:51:57,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:51:57,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:51:57,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:51:57,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:51:57,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:51:57,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:51:57,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:51:57,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:51:57,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:51:57,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:51:57,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:51:57,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:51:57,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:51:57,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:51:57,256 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:51:57,256 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:51:57,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:51:57,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:51:57,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:51:57,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:51:57,436 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:51:57,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 18:51:57,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352de9e5/414ad8e741124822bfd0905015e51797/FLAG84a17d29f [2022-01-10 18:51:57,842 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:51:57,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-10 18:51:57,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352de9e5/414ad8e741124822bfd0905015e51797/FLAG84a17d29f [2022-01-10 18:51:58,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352de9e5/414ad8e741124822bfd0905015e51797 [2022-01-10 18:51:58,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:51:58,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:51:58,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:51:58,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:51:58,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:51:58,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8bffba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58, skipping insertion in model container [2022-01-10 18:51:58,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:51:58,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:51:58,473 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.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-01-10 18:51:58,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:51:58,512 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:51:58,537 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.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2022-01-10 18:51:58,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:51:58,561 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:51:58,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58 WrapperNode [2022-01-10 18:51:58,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:51:58,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:51:58,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:51:58,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:51:58,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,599 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 310 [2022-01-10 18:51:58,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:51:58,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:51:58,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:51:58,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:51:58,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:51:58,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:51:58,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:51:58,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:51:58,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (1/1) ... [2022-01-10 18:51:58,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:51:58,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:51:58,683 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 18:51:58,689 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 18:51:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:51:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:51:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:51:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:51:58,804 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:51:58,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:51:59,101 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:51:59,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:51:59,106 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:51:59,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:59 BoogieIcfgContainer [2022-01-10 18:51:59,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:51:59,108 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:51:59,108 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:51:59,119 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:51:59,122 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:59" (1/1) ... [2022-01-10 18:51:59,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:51:59 BasicIcfg [2022-01-10 18:51:59,354 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:51:59,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:51:59,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:51:59,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:51:59,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:51:58" (1/4) ... [2022-01-10 18:51:59,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cf4919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:59, skipping insertion in model container [2022-01-10 18:51:59,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:58" (2/4) ... [2022-01-10 18:51:59,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cf4919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:59, skipping insertion in model container [2022-01-10 18:51:59,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:59" (3/4) ... [2022-01-10 18:51:59,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cf4919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:51:59, skipping insertion in model container [2022-01-10 18:51:59,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:51:59" (4/4) ... [2022-01-10 18:51:59,361 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:51:59,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:51:59,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:51:59,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:51:59,418 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 18:51:59,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:51:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 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 18:51:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:51:59,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:59,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:59,436 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 121187160, now seen corresponding path program 1 times [2022-01-10 18:51:59,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:59,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805446956] [2022-01-10 18:51:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:59,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:59,768 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 18:51:59,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805446956] [2022-01-10 18:51:59,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805446956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:59,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:59,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:59,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772420541] [2022-01-10 18:51:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:59,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:59,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:59,805 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.6923076923076923) internal successors, (132), 79 states have internal predecessors, (132), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:59,851 INFO L93 Difference]: Finished difference Result 189 states and 302 transitions. [2022-01-10 18:51:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:59,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 18:51:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:59,860 INFO L225 Difference]: With dead ends: 189 [2022-01-10 18:51:59,860 INFO L226 Difference]: Without dead ends: 123 [2022-01-10 18:51:59,862 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 18:51:59,864 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 93 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 292 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 18:51:59,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 292 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:51:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-10 18:51:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2022-01-10 18:51:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5) internal successors, (180), 120 states have internal predecessors, (180), 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 18:51:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 180 transitions. [2022-01-10 18:51:59,937 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 180 transitions. Word has length 37 [2022-01-10 18:51:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:59,938 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 180 transitions. [2022-01-10 18:51:59,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 180 transitions. [2022-01-10 18:51:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:51:59,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:59,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:59,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:51:59,941 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1109080726, now seen corresponding path program 1 times [2022-01-10 18:51:59,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:59,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062965513] [2022-01-10 18:51:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:59,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:00,100 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 18:52:00,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062965513] [2022-01-10 18:52:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062965513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:00,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:00,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:00,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419499333] [2022-01-10 18:52:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:00,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:00,107 INFO L87 Difference]: Start difference. First operand 121 states and 180 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:00,147 INFO L93 Difference]: Finished difference Result 291 states and 448 transitions. [2022-01-10 18:52:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 18:52:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:00,158 INFO L225 Difference]: With dead ends: 291 [2022-01-10 18:52:00,158 INFO L226 Difference]: Without dead ends: 190 [2022-01-10 18:52:00,159 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 18:52:00,160 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 74 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 238 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 18:52:00,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 238 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-10 18:52:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-01-10 18:52:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5240641711229947) internal successors, (285), 187 states have internal predecessors, (285), 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 18:52:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 285 transitions. [2022-01-10 18:52:00,203 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 285 transitions. Word has length 37 [2022-01-10 18:52:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:00,208 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 285 transitions. [2022-01-10 18:52:00,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 285 transitions. [2022-01-10 18:52:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 18:52:00,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:00,212 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] [2022-01-10 18:52:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:52:00,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1257880835, now seen corresponding path program 1 times [2022-01-10 18:52:00,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:00,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061233848] [2022-01-10 18:52:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:00,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:00,304 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 18:52:00,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:00,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061233848] [2022-01-10 18:52:00,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061233848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:00,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:00,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:00,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384642058] [2022-01-10 18:52:00,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:00,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:00,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:00,307 INFO L87 Difference]: Start difference. First operand 188 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:52:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:00,336 INFO L93 Difference]: Finished difference Result 460 states and 711 transitions. [2022-01-10 18:52:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2022-01-10 18:52:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:00,340 INFO L225 Difference]: With dead ends: 460 [2022-01-10 18:52:00,340 INFO L226 Difference]: Without dead ends: 292 [2022-01-10 18:52:00,344 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 18:52:00,347 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 223 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 18:52:00,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 223 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-10 18:52:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-01-10 18:52:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.5259515570934257) internal successors, (441), 289 states have internal predecessors, (441), 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 18:52:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 441 transitions. [2022-01-10 18:52:00,374 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 441 transitions. Word has length 38 [2022-01-10 18:52:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:00,374 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 441 transitions. [2022-01-10 18:52:00,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:52:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 441 transitions. [2022-01-10 18:52:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 18:52:00,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:00,375 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] [2022-01-10 18:52:00,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:52:00,375 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 755941111, now seen corresponding path program 1 times [2022-01-10 18:52:00,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:00,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761513451] [2022-01-10 18:52:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:00,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:00,529 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 18:52:00,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:00,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761513451] [2022-01-10 18:52:00,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761513451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:00,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:00,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:52:00,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737174764] [2022-01-10 18:52:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:00,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:52:00,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:00,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:52:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:52:00,531 INFO L87 Difference]: Start difference. First operand 290 states and 441 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 18:52:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:00,763 INFO L93 Difference]: Finished difference Result 1200 states and 1851 transitions. [2022-01-10 18:52:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:52:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2022-01-10 18:52:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:00,766 INFO L225 Difference]: With dead ends: 1200 [2022-01-10 18:52:00,766 INFO L226 Difference]: Without dead ends: 930 [2022-01-10 18:52:00,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:52:00,775 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 392 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:00,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 385 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:52:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-10 18:52:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 738. [2022-01-10 18:52:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.5318860244233379) internal successors, (1129), 737 states have internal predecessors, (1129), 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 18:52:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1129 transitions. [2022-01-10 18:52:00,858 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1129 transitions. Word has length 39 [2022-01-10 18:52:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:00,859 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1129 transitions. [2022-01-10 18:52:00,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 18:52:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1129 transitions. [2022-01-10 18:52:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 18:52:00,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:00,863 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] [2022-01-10 18:52:00,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:52:00,863 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2139546479, now seen corresponding path program 1 times [2022-01-10 18:52:00,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:00,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164869168] [2022-01-10 18:52:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:00,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:01,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164869168] [2022-01-10 18:52:01,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164869168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:01,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:01,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:52:01,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481195892] [2022-01-10 18:52:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:01,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:52:01,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:52:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:52:01,092 INFO L87 Difference]: Start difference. First operand 738 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 18:52:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:01,700 INFO L93 Difference]: Finished difference Result 3142 states and 4837 transitions. [2022-01-10 18:52:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:52:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-01-10 18:52:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:01,711 INFO L225 Difference]: With dead ends: 3142 [2022-01-10 18:52:01,711 INFO L226 Difference]: Without dead ends: 2424 [2022-01-10 18:52:01,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:01,713 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 435 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:01,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 594 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:52:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-01-10 18:52:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1454. [2022-01-10 18:52:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 1.5065381968341363) internal successors, (2189), 1453 states have internal predecessors, (2189), 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 18:52:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2189 transitions. [2022-01-10 18:52:02,064 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2189 transitions. Word has length 41 [2022-01-10 18:52:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:02,065 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 2189 transitions. [2022-01-10 18:52:02,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 18:52:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2189 transitions. [2022-01-10 18:52:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:52:02,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:02,071 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] [2022-01-10 18:52:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:52:02,071 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1900444844, now seen corresponding path program 1 times [2022-01-10 18:52:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:02,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401626026] [2022-01-10 18:52:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:02,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:02,169 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 18:52:02,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:02,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401626026] [2022-01-10 18:52:02,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401626026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:02,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:02,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:52:02,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575156067] [2022-01-10 18:52:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:02,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:52:02,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:52:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:52:02,171 INFO L87 Difference]: Start difference. First operand 1454 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 18:52:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:02,798 INFO L93 Difference]: Finished difference Result 2824 states and 4226 transitions. [2022-01-10 18:52:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:52:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2022-01-10 18:52:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:02,807 INFO L225 Difference]: With dead ends: 2824 [2022-01-10 18:52:02,807 INFO L226 Difference]: Without dead ends: 2822 [2022-01-10 18:52:02,808 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 18:52:02,808 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 248 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 390 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 18:52:02,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 390 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:52:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-01-10 18:52:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1550. [2022-01-10 18:52:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 1.4751452550032278) internal successors, (2285), 1549 states have internal predecessors, (2285), 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 18:52:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2285 transitions. [2022-01-10 18:52:03,136 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2285 transitions. Word has length 42 [2022-01-10 18:52:03,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:03,140 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2285 transitions. [2022-01-10 18:52:03,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 18:52:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2285 transitions. [2022-01-10 18:52:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 18:52:03,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:03,149 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] [2022-01-10 18:52:03,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:52:03,150 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1214742548, now seen corresponding path program 1 times [2022-01-10 18:52:03,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010860976] [2022-01-10 18:52:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:03,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:03,274 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 18:52:03,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:03,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010860976] [2022-01-10 18:52:03,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010860976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:03,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:03,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:52:03,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395062011] [2022-01-10 18:52:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:03,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:52:03,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:52:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:52:03,292 INFO L87 Difference]: Start difference. First operand 1550 states and 2285 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:52:05,341 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 18:52:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:06,063 INFO L93 Difference]: Finished difference Result 3812 states and 5625 transitions. [2022-01-10 18:52:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:52:06,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 18:52:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:06,070 INFO L225 Difference]: With dead ends: 3812 [2022-01-10 18:52:06,070 INFO L226 Difference]: Without dead ends: 2282 [2022-01-10 18:52:06,071 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 18:52:06,073 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 59 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:06,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:52:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-01-10 18:52:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2280. [2022-01-10 18:52:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 1.4633611232996928) internal successors, (3335), 2279 states have internal predecessors, (3335), 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 18:52:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3335 transitions. [2022-01-10 18:52:06,617 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3335 transitions. Word has length 43 [2022-01-10 18:52:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3335 transitions. [2022-01-10 18:52:06,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:52:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3335 transitions. [2022-01-10 18:52:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:52:06,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:06,620 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 18:52:06,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:52:06,620 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:06,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1895048391, now seen corresponding path program 1 times [2022-01-10 18:52:06,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:06,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727610821] [2022-01-10 18:52:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:06,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:52:06,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727610821] [2022-01-10 18:52:06,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727610821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:52:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173131980] [2022-01-10 18:52:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:06,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:52:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:06,908 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 18:52:06,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process