/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/bitvector/s3_clnt_3.BV.c.cil-2a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 21:57:42,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 21:57:42,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 21:57:42,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 21:57:42,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 21:57:42,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 21:57:42,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 21:57:42,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 21:57:42,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 21:57:42,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 21:57:42,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 21:57:42,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 21:57:42,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 21:57:42,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 21:57:42,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 21:57:42,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 21:57:42,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 21:57:42,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 21:57:42,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 21:57:42,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 21:57:42,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 21:57:42,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 21:57:42,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 21:57:42,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 21:57:42,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-09 21:57:42,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-09 21:57:42,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-09 21:57:42,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-09 21:57:42,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-09 21:57:42,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-09 21:57:42,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-09 21:57:42,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-09 21:57:42,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-09 21:57:42,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-09 21:57:42,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-09 21:57:42,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-09 21:57:42,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-09 21:57:42,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-09 21:57:42,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 21:57:42,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 21:57:42,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 21:57:42,214 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 [2022-01-09 21:57:42,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 21:57:42,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 21:57:42,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 21:57:42,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 21:57:42,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 21:57:42,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 21:57:42,240 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 21:57:42,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 21:57:42,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-09 21:57:42,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 21:57:42,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 21:57:42,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 21:57:42,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 21:57:42,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 21:57:42,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 21:57:42,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 21:57:42,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 21:57:42,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 21:57:42,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-09 21:57:42,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-09 21:57:42,251 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-09 21:57:42,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 21:57:42,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 21:57:42,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 21:57:42,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 21:57:42,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 21:57:42,510 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 21:57:42,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2022-01-09 21:57:42,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823bb4a1f/1b10316a3f8f436ebe2a0bdb4519b9c4/FLAGaa0401da4 [2022-01-09 21:57:42,999 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 21:57:43,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c [2022-01-09 21:57:43,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823bb4a1f/1b10316a3f8f436ebe2a0bdb4519b9c4/FLAGaa0401da4 [2022-01-09 21:57:43,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823bb4a1f/1b10316a3f8f436ebe2a0bdb4519b9c4 [2022-01-09 21:57:43,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 21:57:43,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-09 21:57:43,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 21:57:43,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 21:57:43,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 21:57:43,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48407621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43, skipping insertion in model container [2022-01-09 21:57:43,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 21:57:43,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 21:57:43,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c[37884,37897] [2022-01-09 21:57:43,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 21:57:43,741 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 21:57:43,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_clnt_3.BV.c.cil-2a.c[37884,37897] [2022-01-09 21:57:43,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 21:57:43,822 INFO L208 MainTranslator]: Completed translation [2022-01-09 21:57:43,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43 WrapperNode [2022-01-09 21:57:43,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 21:57:43,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 21:57:43,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 21:57:43,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 21:57:43,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,891 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 440 [2022-01-09 21:57:43,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 21:57:43,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 21:57:43,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 21:57:43,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 21:57:43,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 21:57:43,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 21:57:43,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 21:57:43,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 21:57:43,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (1/1) ... [2022-01-09 21:57:43,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 21:57:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 21:57:43,985 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) [2022-01-09 21:57:44,007 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 [2022-01-09 21:57:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 21:57:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-09 21:57:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 21:57:44,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 21:57:44,144 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 21:57:44,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 21:57:44,165 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-09 21:57:44,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2022-01-09 21:57:44,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2022-01-09 21:57:44,608 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 21:57:44,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 21:57:44,615 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 21:57:44,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:57:44 BoogieIcfgContainer [2022-01-09 21:57:44,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 21:57:44,618 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-09 21:57:44,618 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-09 21:57:44,622 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-09 21:57:44,625 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:57:44" (1/1) ... [2022-01-09 21:57:44,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 09.01 09:57:44 BasicIcfg [2022-01-09 21:57:44,845 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-09 21:57:44,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 21:57:44,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 21:57:44,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 21:57:44,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:57:43" (1/4) ... [2022-01-09 21:57:44,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f274d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:57:44, skipping insertion in model container [2022-01-09 21:57:44,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:57:43" (2/4) ... [2022-01-09 21:57:44,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f274d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:57:44, skipping insertion in model container [2022-01-09 21:57:44,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:57:44" (3/4) ... [2022-01-09 21:57:44,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f274d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 09:57:44, skipping insertion in model container [2022-01-09 21:57:44,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 09.01 09:57:44" (4/4) ... [2022-01-09 21:57:44,852 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.cTransformedIcfg [2022-01-09 21:57:44,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 21:57:44,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 21:57:44,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 21:57:44,905 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 [2022-01-09 21:57:44,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 21:57:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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) [2022-01-09 21:57:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-09 21:57:44,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:57:44,931 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] [2022-01-09 21:57:44,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:57:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:57:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1936049821, now seen corresponding path program 1 times [2022-01-09 21:57:44,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:57:44,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679450649] [2022-01-09 21:57:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:57:44,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:57:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:57:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 21:57:45,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:57:45,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679450649] [2022-01-09 21:57:45,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679450649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:57:45,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:57:45,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:57:45,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575326810] [2022-01-09 21:57:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:57:45,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:57:45,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:57:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:57:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:57:45,217 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7338709677419355) internal successors, (215), 125 states have internal predecessors, (215), 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 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-01-09 21:57:47,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:57:49,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:57:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:57:49,499 INFO L93 Difference]: Finished difference Result 247 states and 423 transitions. [2022-01-09 21:57:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 21:57:49,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2022-01-09 21:57:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:57:49,509 INFO L225 Difference]: With dead ends: 247 [2022-01-09 21:57:49,509 INFO L226 Difference]: Without dead ends: 113 [2022-01-09 21:57:49,511 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 [2022-01-09 21:57:49,514 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-09 21:57:49,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 320 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-01-09 21:57:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-09 21:57:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-01-09 21:57:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5267857142857142) internal successors, (171), 112 states have internal predecessors, (171), 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) [2022-01-09 21:57:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2022-01-09 21:57:49,548 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2022-01-09 21:57:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:57:49,549 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2022-01-09 21:57:49,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-01-09 21:57:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2022-01-09 21:57:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-09 21:57:49,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:57:49,550 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-09 21:57:49,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 21:57:49,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:57:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:57:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash 331205567, now seen corresponding path program 1 times [2022-01-09 21:57:49,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:57:49,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629117356] [2022-01-09 21:57:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:57:49,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:57:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:57:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 21:57:49,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:57:49,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629117356] [2022-01-09 21:57:49,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629117356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:57:49,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:57:49,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:57:49,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259334339] [2022-01-09 21:57:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:57:49,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:57:49,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:57:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:57:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:57:49,610 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 21:57:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:57:49,633 INFO L93 Difference]: Finished difference Result 323 states and 489 transitions. [2022-01-09 21:57:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 21:57:49,633 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 [2022-01-09 21:57:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:57:49,635 INFO L225 Difference]: With dead ends: 323 [2022-01-09 21:57:49,636 INFO L226 Difference]: Without dead ends: 221 [2022-01-09 21:57:49,636 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 [2022-01-09 21:57:49,637 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 152 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 21:57:49,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 325 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 21:57:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-09 21:57:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2022-01-09 21:57:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.518348623853211) internal successors, (331), 218 states have internal predecessors, (331), 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) [2022-01-09 21:57:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 331 transitions. [2022-01-09 21:57:49,664 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 331 transitions. Word has length 37 [2022-01-09 21:57:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:57:49,666 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 331 transitions. [2022-01-09 21:57:49,668 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) [2022-01-09 21:57:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 331 transitions. [2022-01-09 21:57:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-09 21:57:49,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:57:49,673 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-09 21:57:49,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 21:57:49,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:57:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:57:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash 300185760, now seen corresponding path program 1 times [2022-01-09 21:57:49,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:57:49,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547932222] [2022-01-09 21:57:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:57:49,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:57:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:57:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 21:57:49,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:57:49,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547932222] [2022-01-09 21:57:49,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547932222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:57:49,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:57:49,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:57:49,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657238993] [2022-01-09 21:57:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:57:49,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:57:49,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:57:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:57:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:57:49,798 INFO L87 Difference]: Start difference. First operand 219 states and 331 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 21:57:51,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:57:53,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:57:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:57:53,990 INFO L93 Difference]: Finished difference Result 455 states and 693 transitions. [2022-01-09 21:57:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 21:57:53,991 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 [2022-01-09 21:57:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:57:53,992 INFO L225 Difference]: With dead ends: 455 [2022-01-09 21:57:53,993 INFO L226 Difference]: Without dead ends: 254 [2022-01-09 21:57:53,994 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 [2022-01-09 21:57:53,995 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 13 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-09 21:57:53,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 241 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-01-09 21:57:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-01-09 21:57:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2022-01-09 21:57:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4898785425101215) internal successors, (368), 247 states have internal predecessors, (368), 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) [2022-01-09 21:57:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 368 transitions. [2022-01-09 21:57:54,007 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 368 transitions. Word has length 37 [2022-01-09 21:57:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:57:54,008 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 368 transitions. [2022-01-09 21:57:54,008 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) [2022-01-09 21:57:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 368 transitions. [2022-01-09 21:57:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-09 21:57:54,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:57:54,010 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-09 21:57:54,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 21:57:54,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:57:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:57:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -405908997, now seen corresponding path program 1 times [2022-01-09 21:57:54,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:57:54,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998847752] [2022-01-09 21:57:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:57:54,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:57:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:57:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 21:57:54,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:57:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998847752] [2022-01-09 21:57:54,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998847752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:57:54,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:57:54,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:57:54,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771634454] [2022-01-09 21:57:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:57:54,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:57:54,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:57:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:57:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:57:54,072 INFO L87 Difference]: Start difference. First operand 248 states and 368 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 21:57:56,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:57:58,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:00,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:58:00,369 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2022-01-09 21:58:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 21:58:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-09 21:58:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:58:00,372 INFO L225 Difference]: With dead ends: 519 [2022-01-09 21:58:00,372 INFO L226 Difference]: Without dead ends: 289 [2022-01-09 21:58:00,372 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 [2022-01-09 21:58:00,373 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-09 21:58:00,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 254 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2022-01-09 21:58:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-09 21:58:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 281. [2022-01-09 21:58:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.4607142857142856) internal successors, (409), 280 states have internal predecessors, (409), 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) [2022-01-09 21:58:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 409 transitions. [2022-01-09 21:58:00,384 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 409 transitions. Word has length 51 [2022-01-09 21:58:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:58:00,385 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 409 transitions. [2022-01-09 21:58:00,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 21:58:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 409 transitions. [2022-01-09 21:58:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-09 21:58:00,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:58:00,387 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2022-01-09 21:58:00,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 21:58:00,388 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:58:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:58:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -363810228, now seen corresponding path program 1 times [2022-01-09 21:58:00,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:58:00,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823808423] [2022-01-09 21:58:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:58:00,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:58:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:58:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 21:58:02,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:58:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823808423] [2022-01-09 21:58:02,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823808423] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 21:58:02,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682121490] [2022-01-09 21:58:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:58:02,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 21:58:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 21:58:02,819 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) [2022-01-09 21:58:02,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 21:58:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:58:33,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-09 21:58:33,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 21:58:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 21:58:35,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 21:58:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 21:58:40,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682121490] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 21:58:40,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 21:58:40,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-09 21:58:40,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071988845] [2022-01-09 21:58:40,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 21:58:40,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-09 21:58:40,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:58:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-09 21:58:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=131, Unknown=1, NotChecked=0, Total=182 [2022-01-09 21:58:40,149 INFO L87 Difference]: Start difference. First operand 281 states and 409 transitions. Second operand has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 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) [2022-01-09 21:58:42,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:44,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:47,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:49,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:58:49,759 INFO L93 Difference]: Finished difference Result 857 states and 1250 transitions. [2022-01-09 21:58:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 21:58:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 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 [2022-01-09 21:58:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:58:49,762 INFO L225 Difference]: With dead ends: 857 [2022-01-09 21:58:49,762 INFO L226 Difference]: Without dead ends: 594 [2022-01-09 21:58:49,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2022-01-09 21:58:49,764 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 299 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 73 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-01-09 21:58:49,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 1058 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 304 Invalid, 4 Unknown, 115 Unchecked, 9.3s Time] [2022-01-09 21:58:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-09 21:58:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 432. [2022-01-09 21:58:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.445475638051044) internal successors, (623), 431 states have internal predecessors, (623), 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) [2022-01-09 21:58:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 623 transitions. [2022-01-09 21:58:49,782 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 623 transitions. Word has length 68 [2022-01-09 21:58:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:58:49,782 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 623 transitions. [2022-01-09 21:58:49,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.5) internal successors, (161), 14 states have internal predecessors, (161), 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) [2022-01-09 21:58:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 623 transitions. [2022-01-09 21:58:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-09 21:58:49,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:58:49,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2022-01-09 21:58:49,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 21:58:50,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 21:58:50,003 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:58:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:58:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash 880954253, now seen corresponding path program 1 times [2022-01-09 21:58:50,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:58:50,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638423955] [2022-01-09 21:58:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:58:50,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:58:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:58:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 21:58:50,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:58:50,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638423955] [2022-01-09 21:58:50,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638423955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:58:50,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:58:50,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:58:50,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811182872] [2022-01-09 21:58:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:58:50,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:58:50,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:58:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:58:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:58:50,131 INFO L87 Difference]: Start difference. First operand 432 states and 623 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-01-09 21:58:52,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:54,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-09 21:58:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 21:58:54,241 INFO L93 Difference]: Finished difference Result 1044 states and 1541 transitions. [2022-01-09 21:58:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 21:58:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 [2022-01-09 21:58:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 21:58:54,244 INFO L225 Difference]: With dead ends: 1044 [2022-01-09 21:58:54,244 INFO L226 Difference]: Without dead ends: 736 [2022-01-09 21:58:54,245 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 [2022-01-09 21:58:54,245 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 120 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-09 21:58:54,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 422 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-01-09 21:58:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-01-09 21:58:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2022-01-09 21:58:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.4597544338335606) internal successors, (1070), 733 states have internal predecessors, (1070), 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) [2022-01-09 21:58:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1070 transitions. [2022-01-09 21:58:54,271 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1070 transitions. Word has length 68 [2022-01-09 21:58:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 21:58:54,271 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1070 transitions. [2022-01-09 21:58:54,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-01-09 21:58:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1070 transitions. [2022-01-09 21:58:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-09 21:58:54,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 21:58:54,273 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2022-01-09 21:58:54,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-09 21:58:54,273 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 21:58:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 21:58:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash -572508531, now seen corresponding path program 1 times [2022-01-09 21:58:54,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 21:58:54,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138561194] [2022-01-09 21:58:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 21:58:54,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 21:58:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 21:58:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 21:58:54,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 21:58:54,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138561194] [2022-01-09 21:58:54,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138561194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 21:58:54,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 21:58:54,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 21:58:54,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635867988] [2022-01-09 21:58:54,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 21:58:54,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 21:58:54,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 21:58:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 21:58:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 21:58:54,345 INFO L87 Difference]: Start difference. First operand 734 states and 1070 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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)