/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 10:06:04,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 10:06:04,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 10:06:04,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 10:06:04,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 10:06:04,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 10:06:04,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 10:06:04,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 10:06:04,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 10:06:04,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 10:06:04,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 10:06:04,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 10:06:04,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 10:06:04,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 10:06:04,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 10:06:04,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 10:06:04,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 10:06:04,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 10:06:04,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 10:06:04,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 10:06:04,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 10:06:04,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 10:06:04,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 10:06:04,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 10:06:04,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 10:06:04,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 10:06:04,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 10:06:04,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 10:06:04,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 10:06:04,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 10:06:04,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 10:06:04,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 10:06:04,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 10:06:04,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 10:06:04,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 10:06:04,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 10:06:04,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 10:06:04,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 10:06:04,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 10:06:04,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 10:06:04,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 10:06:04,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 10:06:04,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 10:06:04,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 10:06:04,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 10:06:04,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 10:06:04,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 10:06:04,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 10:06:04,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 10:06:04,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 10:06:04,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:06:04,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 10:06:04,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 10:06:04,275 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 10:06:04,275 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 10:06:04,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 10:06:04,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 10:06:04,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 10:06:04,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 10:06:04,480 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 10:06:04,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c [2022-01-10 10:06:04,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6b3a035/0a22e99833a14674bd3a670f49bd87b1/FLAG3fc392c65 [2022-01-10 10:06:05,016 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 10:06:05,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c [2022-01-10 10:06:05,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6b3a035/0a22e99833a14674bd3a670f49bd87b1/FLAG3fc392c65 [2022-01-10 10:06:05,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d6b3a035/0a22e99833a14674bd3a670f49bd87b1 [2022-01-10 10:06:05,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 10:06:05,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 10:06:05,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 10:06:05,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 10:06:05,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 10:06:05,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1891f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05, skipping insertion in model container [2022-01-10 10:06:05,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 10:06:05,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 10:06:05,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 10:06:05,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:06:05,449 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 10:06:05,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 10:06:05,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 10:06:05,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:06:05,545 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 10:06:05,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.13.i.cil-1.c[74354,74367] [2022-01-10 10:06:05,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:06:05,650 INFO L208 MainTranslator]: Completed translation [2022-01-10 10:06:05,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05 WrapperNode [2022-01-10 10:06:05,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 10:06:05,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 10:06:05,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 10:06:05,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 10:06:05,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,732 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 785 [2022-01-10 10:06:05,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 10:06:05,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 10:06:05,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 10:06:05,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 10:06:05,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 10:06:05,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 10:06:05,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 10:06:05,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 10:06:05,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (1/1) ... [2022-01-10 10:06:05,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:06:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 10:06:05,839 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 10:06:05,845 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 10:06:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 10:06:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 10:06:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 10:06:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 10:06:05,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 10:06:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 10:06:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 10:06:06,062 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 10:06:06,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 10:06:06,072 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 10:06:17,573 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 10:06:17,574 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 10:06:17,574 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 10:06:17,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 10:06:17,579 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 10:06:17,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:06:17 BoogieIcfgContainer [2022-01-10 10:06:17,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 10:06:17,580 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 10:06:17,581 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 10:06:17,583 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 10:06:17,584 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:06:17" (1/1) ... [2022-01-10 10:06:17,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:06:17 BasicIcfg [2022-01-10 10:06:17,867 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 10:06:17,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 10:06:17,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 10:06:17,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 10:06:17,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 10:06:05" (1/4) ... [2022-01-10 10:06:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4760c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:06:17, skipping insertion in model container [2022-01-10 10:06:17,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:06:05" (2/4) ... [2022-01-10 10:06:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4760c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:06:17, skipping insertion in model container [2022-01-10 10:06:17,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:06:17" (3/4) ... [2022-01-10 10:06:17,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4760c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 10:06:17, skipping insertion in model container [2022-01-10 10:06:17,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:06:17" (4/4) ... [2022-01-10 10:06:17,872 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-1.cTransformedIcfg [2022-01-10 10:06:17,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 10:06:17,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 10:06:17,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 10:06:17,908 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 10:06:17,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 10:06:17,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 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 10:06:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 10:06:17,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:06:17,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:06:17,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:06:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:06:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2007787463, now seen corresponding path program 1 times [2022-01-10 10:06:17,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:06:17,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906978503] [2022-01-10 10:06:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:06:17,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:06:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:06:18,665 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 10:06:18,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:06:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906978503] [2022-01-10 10:06:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906978503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:06:18,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:06:18,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:06:18,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177704394] [2022-01-10 10:06:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:06:18,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:06:18,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:06:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:06:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:06:18,705 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:06:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:06:18,866 INFO L93 Difference]: Finished difference Result 427 states and 728 transitions. [2022-01-10 10:06:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:06:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-10 10:06:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:06:18,882 INFO L225 Difference]: With dead ends: 427 [2022-01-10 10:06:18,882 INFO L226 Difference]: Without dead ends: 261 [2022-01-10 10:06:18,885 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 10:06:18,889 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 201 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:06:18,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 461 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 10:06:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-10 10:06:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-01-10 10:06:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5153846153846153) internal successors, (394), 260 states have internal predecessors, (394), 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 10:06:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-01-10 10:06:18,945 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 37 [2022-01-10 10:06:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:06:18,946 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-01-10 10:06:18,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:06:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-01-10 10:06:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 10:06:18,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:06:18,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-01-10 10:06:18,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 10:06:18,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:06:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:06:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1771164816, now seen corresponding path program 1 times [2022-01-10 10:06:18,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:06:18,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000829226] [2022-01-10 10:06:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:06:18,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:06:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:06:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:06:19,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:06:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000829226] [2022-01-10 10:06:19,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000829226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:06:19,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:06:19,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 10:06:19,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503976642] [2022-01-10 10:06:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:06:19,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:06:19,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:06:19,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:06:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:06:19,559 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:06:21,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:24,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:26,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:28,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:30,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:33,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:36,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:40,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:42,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:44,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:47,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:49,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:51,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:53,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:57,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:06:59,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:02,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:04,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:06,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:10,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:12,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:14,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 10:07:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:07:18,188 INFO L93 Difference]: Finished difference Result 493 states and 753 transitions. [2022-01-10 10:07:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:07:18,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 10:07:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:07:18,192 INFO L225 Difference]: With dead ends: 493 [2022-01-10 10:07:18,192 INFO L226 Difference]: Without dead ends: 366 [2022-01-10 10:07:18,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:07:18,193 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 106 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.6s IncrementalHoareTripleChecker+Time [2022-01-10 10:07:18,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 474 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 18 Unknown, 0 Unchecked, 58.6s Time] [2022-01-10 10:07:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-10 10:07:18,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 289. [2022-01-10 10:07:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.5416666666666667) internal successors, (444), 288 states have internal predecessors, (444), 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 10:07:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 444 transitions. [2022-01-10 10:07:18,205 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 444 transitions. Word has length 54 [2022-01-10 10:07:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:07:18,205 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 444 transitions. [2022-01-10 10:07:18,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:07:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 444 transitions. [2022-01-10 10:07:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 10:07:18,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:07:18,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2022-01-10 10:07:18,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 10:07:18,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:07:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:07:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash -6440789, now seen corresponding path program 1 times [2022-01-10 10:07:18,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:07:18,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644539085] [2022-01-10 10:07:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:07:18,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:07:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:07:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:07:18,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:07:18,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644539085] [2022-01-10 10:07:18,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644539085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:07:18,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:07:18,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:07:18,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988810686] [2022-01-10 10:07:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:07:18,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:07:18,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:07:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:07:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:07:18,542 INFO L87 Difference]: Start difference. First operand 289 states and 444 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:07:18,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:07:18,886 INFO L93 Difference]: Finished difference Result 594 states and 931 transitions. [2022-01-10 10:07:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:07:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 10:07:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:07:18,889 INFO L225 Difference]: With dead ends: 594 [2022-01-10 10:07:18,889 INFO L226 Difference]: Without dead ends: 439 [2022-01-10 10:07:18,889 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 10:07:18,890 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 149 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 10:07:18,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 567 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 10:07:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-10 10:07:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-01-10 10:07:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.5410958904109588) internal successors, (675), 438 states have internal predecessors, (675), 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 10:07:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 675 transitions. [2022-01-10 10:07:18,900 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 675 transitions. Word has length 55 [2022-01-10 10:07:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:07:18,900 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 675 transitions. [2022-01-10 10:07:18,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:07:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 675 transitions. [2022-01-10 10:07:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 10:07:18,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:07:18,902 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 10:07:18,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 10:07:18,902 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:07:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:07:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -172208462, now seen corresponding path program 1 times [2022-01-10 10:07:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:07:18,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591471029] [2022-01-10 10:07:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:07:18,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:07:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:07:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 10:07:19,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:07:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591471029] [2022-01-10 10:07:19,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591471029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:07:19,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:07:19,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:07:19,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634635348] [2022-01-10 10:07:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:07:19,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:07:19,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:07:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:07:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:07:19,223 INFO L87 Difference]: Start difference. First operand 439 states and 675 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:07:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:07:19,332 INFO L93 Difference]: Finished difference Result 897 states and 1397 transitions. [2022-01-10 10:07:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:07:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 76 [2022-01-10 10:07:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:07:19,335 INFO L225 Difference]: With dead ends: 897 [2022-01-10 10:07:19,335 INFO L226 Difference]: Without dead ends: 592 [2022-01-10 10:07:19,335 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 10:07:19,336 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:07:19,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 376 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 10:07:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-01-10 10:07:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-01-10 10:07:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.5465313028764804) internal successors, (914), 591 states have internal predecessors, (914), 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 10:07:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 914 transitions. [2022-01-10 10:07:19,350 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 914 transitions. Word has length 76 [2022-01-10 10:07:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:07:19,350 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 914 transitions. [2022-01-10 10:07:19,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 10:07:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 914 transitions. [2022-01-10 10:07:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 10:07:19,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:07:19,353 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 10:07:19,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 10:07:19,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:07:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:07:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -586906852, now seen corresponding path program 1 times [2022-01-10 10:07:19,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:07:19,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370310150] [2022-01-10 10:07:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:07:19,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:07:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:07:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 10:07:19,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:07:19,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370310150] [2022-01-10 10:07:19,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370310150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:07:19,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:07:19,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 10:07:19,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070341044] [2022-01-10 10:07:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:07:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:07:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:07:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:07:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:07:19,954 INFO L87 Difference]: Start difference. First operand 592 states and 914 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 10:07:21,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []