/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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:55:40,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:55:40,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:55:40,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:55:40,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:55:40,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:55:40,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:55:40,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:55:40,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:55:40,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:55:40,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:55:40,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:55:40,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:55:40,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:55:40,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:55:40,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:55:40,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:55:40,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:55:40,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:55:40,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:55:40,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:55:40,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:55:40,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:55:40,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:55:40,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:55:40,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:55:40,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:55:40,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:55:40,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:55:40,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:55:40,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:55:40,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:55:40,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:55:40,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:55:40,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:55:40,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:55:40,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:55:40,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:55:40,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:55:40,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:55:40,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:55:40,235 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 18:55:40,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:55:40,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:55:40,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:55:40,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:55:40,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:55:40,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:55:40,254 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:55:40,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:55:40,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:55:40,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:55:40,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:55:40,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:55:40,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:55:40,258 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:55:40,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:55:40,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:55:40,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:55:40,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:55:40,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:55:40,454 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:55:40,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-01-10 18:55:40,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abdbde05/e95800f10a8b43dea60982489991dbbb/FLAG459ab40e0 [2022-01-10 18:55:40,889 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:55:40,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-01-10 18:55:40,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abdbde05/e95800f10a8b43dea60982489991dbbb/FLAG459ab40e0 [2022-01-10 18:55:41,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abdbde05/e95800f10a8b43dea60982489991dbbb [2022-01-10 18:55:41,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:55:41,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:55:41,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:55:41,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:55:41,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:55:41,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4fc67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41, skipping insertion in model container [2022-01-10 18:55:41,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:55:41,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:55:41,540 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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-01-10 18:55:41,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:55:41,591 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:55:41,625 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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2022-01-10 18:55:41,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:55:41,669 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:55:41,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41 WrapperNode [2022-01-10 18:55:41,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:55:41,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:55:41,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:55:41,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:55:41,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,721 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 508 [2022-01-10 18:55:41,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:55:41,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:55:41,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:55:41,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:55:41,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:55:41,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:55:41,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:55:41,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:55:41,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (1/1) ... [2022-01-10 18:55:41,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:55:41,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:55:41,837 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 18:55:41,859 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 18:55:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:55:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:55:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:55:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:55:41,980 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:55:41,981 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:55:42,392 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:55:42,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:55:42,399 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:55:42,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:42 BoogieIcfgContainer [2022-01-10 18:55:42,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:55:42,401 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:55:42,401 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:55:42,402 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:55:42,406 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:42" (1/1) ... [2022-01-10 18:55:42,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:55:42 BasicIcfg [2022-01-10 18:55:42,835 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:55:42,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:55:42,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:55:42,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:55:42,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:41" (1/4) ... [2022-01-10 18:55:42,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e09138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:42, skipping insertion in model container [2022-01-10 18:55:42,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:41" (2/4) ... [2022-01-10 18:55:42,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e09138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:42, skipping insertion in model container [2022-01-10 18:55:42,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:42" (3/4) ... [2022-01-10 18:55:42,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e09138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:55:42, skipping insertion in model container [2022-01-10 18:55:42,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:55:42" (4/4) ... [2022-01-10 18:55:42,845 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:55:42,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:55:42,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:55:42,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:55:42,915 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 18:55:42,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:55:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 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 18:55:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:55:42,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:42,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:42,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1974103984, now seen corresponding path program 1 times [2022-01-10 18:55:42,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:42,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426985235] [2022-01-10 18:55:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:42,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:43,550 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 18:55:43,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:43,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426985235] [2022-01-10 18:55:43,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426985235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:43,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:43,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:43,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140945211] [2022-01-10 18:55:43,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:43,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:43,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:43,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:43,594 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 135 states have internal predecessors, (228), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:55:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:43,686 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2022-01-10 18:55:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-10 18:55:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:43,706 INFO L225 Difference]: With dead ends: 322 [2022-01-10 18:55:43,706 INFO L226 Difference]: Without dead ends: 215 [2022-01-10 18:55:43,711 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 18:55:43,715 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 504 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 18:55:43,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 504 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-10 18:55:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2022-01-10 18:55:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.5047169811320755) internal successors, (319), 212 states have internal predecessors, (319), 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 18:55:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2022-01-10 18:55:43,784 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2022-01-10 18:55:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:43,786 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2022-01-10 18:55:43,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 18:55:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2022-01-10 18:55:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:55:43,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:43,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:43,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:55:43,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:43,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1367392536, now seen corresponding path program 1 times [2022-01-10 18:55:43,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:43,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923756694] [2022-01-10 18:55:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:43,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:44,015 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 18:55:44,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:44,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923756694] [2022-01-10 18:55:44,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923756694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:44,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:44,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:44,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432857250] [2022-01-10 18:55:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:44,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:44,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:44,021 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:55:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:44,069 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2022-01-10 18:55:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-01-10 18:55:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:44,072 INFO L225 Difference]: With dead ends: 537 [2022-01-10 18:55:44,072 INFO L226 Difference]: Without dead ends: 359 [2022-01-10 18:55:44,079 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 18:55:44,081 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 139 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 443 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 18:55:44,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-10 18:55:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-01-10 18:55:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.5393258426966292) internal successors, (548), 356 states have internal predecessors, (548), 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 18:55:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2022-01-10 18:55:44,104 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2022-01-10 18:55:44,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:44,104 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2022-01-10 18:55:44,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:55:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2022-01-10 18:55:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:55:44,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:44,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:55:44,106 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1793234097, now seen corresponding path program 1 times [2022-01-10 18:55:44,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422405838] [2022-01-10 18:55:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:44,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:44,329 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 18:55:44,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422405838] [2022-01-10 18:55:44,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422405838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:44,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:44,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:44,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228390625] [2022-01-10 18:55:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:44,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:44,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:44,333 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:55:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:44,357 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2022-01-10 18:55:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 18:55:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:44,361 INFO L225 Difference]: With dead ends: 937 [2022-01-10 18:55:44,361 INFO L226 Difference]: Without dead ends: 615 [2022-01-10 18:55:44,364 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 18:55:44,368 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 134 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 428 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 18:55:44,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 428 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:44,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-01-10 18:55:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2022-01-10 18:55:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5555555555555556) internal successors, (952), 612 states have internal predecessors, (952), 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 18:55:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2022-01-10 18:55:44,394 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2022-01-10 18:55:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:44,395 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2022-01-10 18:55:44,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 18:55:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2022-01-10 18:55:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:55:44,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:44,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:44,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:55:44,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:44,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1668194679, now seen corresponding path program 1 times [2022-01-10 18:55:44,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:44,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408392221] [2022-01-10 18:55:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:44,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:44,594 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 18:55:44,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:44,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408392221] [2022-01-10 18:55:44,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408392221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:44,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:44,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:44,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138628960] [2022-01-10 18:55:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:44,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:44,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:44,597 INFO L87 Difference]: Start difference. First operand 613 states and 952 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:55:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:44,631 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2022-01-10 18:55:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:44,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:55:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:44,636 INFO L225 Difference]: With dead ends: 1641 [2022-01-10 18:55:44,636 INFO L226 Difference]: Without dead ends: 1063 [2022-01-10 18:55:44,637 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 18:55:44,642 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 413 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 18:55:44,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-01-10 18:55:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2022-01-10 18:55:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.558490566037736) internal successors, (1652), 1060 states have internal predecessors, (1652), 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 18:55:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2022-01-10 18:55:44,673 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2022-01-10 18:55:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:44,675 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2022-01-10 18:55:44,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:55:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2022-01-10 18:55:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:55:44,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:44,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:44,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:55:44,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:44,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:44,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1454072142, now seen corresponding path program 1 times [2022-01-10 18:55:44,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:44,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080655947] [2022-01-10 18:55:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:44,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:44,842 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 18:55:44,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080655947] [2022-01-10 18:55:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080655947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:44,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:44,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:44,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673738143] [2022-01-10 18:55:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:44,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:44,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:44,845 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:55:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:44,897 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2022-01-10 18:55:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 18:55:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:44,905 INFO L225 Difference]: With dead ends: 2857 [2022-01-10 18:55:44,905 INFO L226 Difference]: Without dead ends: 1831 [2022-01-10 18:55:44,906 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 18:55:44,907 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 398 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 18:55:44,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-01-10 18:55:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2022-01-10 18:55:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.5514223194748358) internal successors, (2836), 1828 states have internal predecessors, (2836), 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 18:55:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2022-01-10 18:55:44,957 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2022-01-10 18:55:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:44,958 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2022-01-10 18:55:44,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 18:55:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2022-01-10 18:55:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:55:44,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:44,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:44,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:55:44,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:44,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1031021782, now seen corresponding path program 1 times [2022-01-10 18:55:44,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589901360] [2022-01-10 18:55:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:44,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:45,243 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 18:55:45,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:45,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589901360] [2022-01-10 18:55:45,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589901360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:45,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:45,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:55:45,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216728802] [2022-01-10 18:55:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:45,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:55:45,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:55:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:55:45,245 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:55:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:47,882 INFO L93 Difference]: Finished difference Result 18331 states and 28479 transitions. [2022-01-10 18:55:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:55:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:55:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:47,949 INFO L225 Difference]: With dead ends: 18331 [2022-01-10 18:55:47,949 INFO L226 Difference]: Without dead ends: 16537 [2022-01-10 18:55:47,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:55:47,961 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1323 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:47,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 2691 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:55:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16537 states. [2022-01-10 18:55:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16537 to 8213. [2022-01-10 18:55:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 8212 states have (on average 1.5494398441305406) internal successors, (12724), 8212 states have internal predecessors, (12724), 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 18:55:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 12724 transitions. [2022-01-10 18:55:49,161 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 12724 transitions. Word has length 65 [2022-01-10 18:55:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:49,162 INFO L470 AbstractCegarLoop]: Abstraction has 8213 states and 12724 transitions. [2022-01-10 18:55:49,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:55:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 12724 transitions. [2022-01-10 18:55:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:55:49,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:49,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:49,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:55:49,164 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1982292370, now seen corresponding path program 1 times [2022-01-10 18:55:49,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:49,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475928056] [2022-01-10 18:55:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:49,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:49,535 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 18:55:49,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:49,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475928056] [2022-01-10 18:55:49,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475928056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:49,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:49,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:55:49,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238503894] [2022-01-10 18:55:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:49,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:55:49,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:55:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:55:49,537 INFO L87 Difference]: Start difference. First operand 8213 states and 12724 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 18:55:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:58,551 INFO L93 Difference]: Finished difference Result 50817 states and 78810 transitions. [2022-01-10 18:55:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:55:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 67 [2022-01-10 18:55:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:58,683 INFO L225 Difference]: With dead ends: 50817 [2022-01-10 18:55:58,683 INFO L226 Difference]: Without dead ends: 42639 [2022-01-10 18:55:58,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:55:58,710 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 1438 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:58,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1438 Valid, 2369 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:55:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42639 states. [2022-01-10 18:56:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42639 to 16389. [2022-01-10 18:56:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16389 states, 16388 states have (on average 1.5311203319502074) internal successors, (25092), 16388 states have internal predecessors, (25092), 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 18:56:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 25092 transitions. [2022-01-10 18:56:04,677 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 25092 transitions. Word has length 67 [2022-01-10 18:56:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:04,677 INFO L470 AbstractCegarLoop]: Abstraction has 16389 states and 25092 transitions. [2022-01-10 18:56:04,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 18:56:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 25092 transitions. [2022-01-10 18:56:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:56:04,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:04,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:04,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:56:04,679 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1320535089, now seen corresponding path program 1 times [2022-01-10 18:56:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:04,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457847486] [2022-01-10 18:56:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:04,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:04,815 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 18:56:04,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457847486] [2022-01-10 18:56:04,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457847486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:04,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:04,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:56:04,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189708967] [2022-01-10 18:56:04,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:04,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:56:04,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:56:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:56:04,817 INFO L87 Difference]: Start difference. First operand 16389 states and 25092 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 18:56:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:15,470 INFO L93 Difference]: Finished difference Result 31991 states and 48840 transitions. [2022-01-10 18:56:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:56:15,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 68 [2022-01-10 18:56:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:15,538 INFO L225 Difference]: With dead ends: 31991 [2022-01-10 18:56:15,539 INFO L226 Difference]: Without dead ends: 31989 [2022-01-10 18:56:15,547 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 18:56:15,548 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 446 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 705 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 18:56:15,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 705 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:56:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31989 states. [2022-01-10 18:56:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31989 to 17029. [2022-01-10 18:56:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17029 states, 17028 states have (on average 1.5111580925534414) internal successors, (25732), 17028 states have internal predecessors, (25732), 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 18:56:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17029 states to 17029 states and 25732 transitions. [2022-01-10 18:56:21,435 INFO L78 Accepts]: Start accepts. Automaton has 17029 states and 25732 transitions. Word has length 68 [2022-01-10 18:56:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:21,436 INFO L470 AbstractCegarLoop]: Abstraction has 17029 states and 25732 transitions. [2022-01-10 18:56:21,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 18:56:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 17029 states and 25732 transitions. [2022-01-10 18:56:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:56:21,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:21,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:21,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:56:21,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:21,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2012075441, now seen corresponding path program 1 times [2022-01-10 18:56:21,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:21,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143779520] [2022-01-10 18:56:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:21,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:21,615 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 18:56:21,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:21,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143779520] [2022-01-10 18:56:21,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143779520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:21,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:21,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:21,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310845759] [2022-01-10 18:56:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:21,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:21,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:21,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:21,617 INFO L87 Difference]: Start difference. First operand 17029 states and 25732 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 18:56:23,801 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 18:56:34,256 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 18:56:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:34,448 INFO L93 Difference]: Finished difference Result 42603 states and 64392 transitions. [2022-01-10 18:56:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:34,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 18:56:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:34,645 INFO L225 Difference]: With dead ends: 42603 [2022-01-10 18:56:34,646 INFO L226 Difference]: Without dead ends: 25609 [2022-01-10 18:56:34,673 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 18:56:34,675 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 114 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 385 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 18:56:34,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 385 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 18:56:34,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25609 states. [2022-01-10 18:56:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25609 to 25607. [2022-01-10 18:56:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25607 states, 25606 states have (on average 1.5048816683589783) internal successors, (38534), 25606 states have internal predecessors, (38534), 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 18:56:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25607 states to 25607 states and 38534 transitions. [2022-01-10 18:56:43,643 INFO L78 Accepts]: Start accepts. Automaton has 25607 states and 38534 transitions. Word has length 69 [2022-01-10 18:56:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:43,644 INFO L470 AbstractCegarLoop]: Abstraction has 25607 states and 38534 transitions. [2022-01-10 18:56:43,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 18:56:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25607 states and 38534 transitions. [2022-01-10 18:56:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 18:56:43,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:43,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:43,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:56:43,657 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash -470378596, now seen corresponding path program 1 times [2022-01-10 18:56:43,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:43,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215773700] [2022-01-10 18:56:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:43,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 18:56:44,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:44,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215773700] [2022-01-10 18:56:44,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215773700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:56:44,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675208095] [2022-01-10 18:56:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:44,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:56:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:56:44,052 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 18:56:44,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process