/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:12:31,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:12:31,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:12:31,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:12:31,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:12:31,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:12:31,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:12:31,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:12:31,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:12:31,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:12:31,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:12:31,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:12:31,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:12:31,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:12:31,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:12:31,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:12:31,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:12:31,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:12:31,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:12:31,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:12:31,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:12:31,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:12:31,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:12:31,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:12:31,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:12:31,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:12:31,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:12:31,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:12:31,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:12:31,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:12:31,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:12:31,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:12:31,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:12:32,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:12:32,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:12:32,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:12:32,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:12:32,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:12:32,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:12:32,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:12:32,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:12:32,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:12:32,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:12:32,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:12:32,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:12:32,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:12:32,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:12:32,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:12:32,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:12:32,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:12:32,046 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:12:32,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:12:32,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:12:32,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:12:32,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:12:32,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:12:32,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:32,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:12:32,048 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:12:32,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:12:32,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:12:32,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:12:32,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:12:32,049 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:12:32,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:12:32,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:12:32,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:12:32,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:12:32,300 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:12:32,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c [2022-01-10 04:12:32,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9749dd4cd/d42c6d3f28484a18adcf0217b49ac013/FLAGae8d36c5e [2022-01-10 04:12:32,852 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:12:32,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_clnt.blast.04.i.cil-2.c [2022-01-10 04:12:32,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9749dd4cd/d42c6d3f28484a18adcf0217b49ac013/FLAGae8d36c5e [2022-01-10 04:12:33,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9749dd4cd/d42c6d3f28484a18adcf0217b49ac013 [2022-01-10 04:12:33,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:12:33,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:12:33,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:33,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:12:33,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:12:33,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb4048d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33, skipping insertion in model container [2022-01-10 04:12:33,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:12:33,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:33,547 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_clnt.blast.04.i.cil-2.c[65405,65418] [2022-01-10 04:12:33,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:33,580 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:12:33,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:12:33,701 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_clnt.blast.04.i.cil-2.c[65405,65418] [2022-01-10 04:12:33,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:33,712 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:12:33,818 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_clnt.blast.04.i.cil-2.c[65405,65418] [2022-01-10 04:12:33,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:12:33,835 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:12:33,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33 WrapperNode [2022-01-10 04:12:33,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:12:33,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:33,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:12:33,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:12:33,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,932 INFO L137 Inliner]: procedures = 41, calls = 242, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 712 [2022-01-10 04:12:33,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:12:33,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:12:33,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:12:33,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:12:33,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:33,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:34,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:34,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:34,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:34,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:12:34,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:12:34,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:12:34,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:12:34,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (1/1) ... [2022-01-10 04:12:34,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:12:34,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:12:34,084 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 04:12:34,107 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 04:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:12:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:12:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:12:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:12:34,316 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:12:34,318 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:12:34,352 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:12:45,987 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-01-10 04:12:45,988 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-01-10 04:12:45,988 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:12:45,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:12:45,993 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:12:45,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:12:45 BoogieIcfgContainer [2022-01-10 04:12:45,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:12:45,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:12:45,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:12:45,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:12:45,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:12:33" (1/3) ... [2022-01-10 04:12:46,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5429ef56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:12:45, skipping insertion in model container [2022-01-10 04:12:46,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:12:33" (2/3) ... [2022-01-10 04:12:46,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5429ef56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:12:46, skipping insertion in model container [2022-01-10 04:12:46,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:12:45" (3/3) ... [2022-01-10 04:12:46,001 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-2.c [2022-01-10 04:12:46,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:12:46,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:12:46,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:12:46,043 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 04:12:46,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:12:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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 04:12:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 04:12:46,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:46,060 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] [2022-01-10 04:12:46,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2022-01-10 04:12:46,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186174867] [2022-01-10 04:12:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:46,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:46,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:46,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:12:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:47,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:47,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:48,222 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 04:12:48,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:48,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:48,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186174867] [2022-01-10 04:12:48,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186174867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:48,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:48,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:48,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632619212] [2022-01-10 04:12:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:48,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:48,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:48,250 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 04:12:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:48,362 INFO L93 Difference]: Finished difference Result 369 states and 623 transitions. [2022-01-10 04:12:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-01-10 04:12:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:48,384 INFO L225 Difference]: With dead ends: 369 [2022-01-10 04:12:48,384 INFO L226 Difference]: Without dead ends: 213 [2022-01-10 04:12:48,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 04:12:48,393 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 180 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:48,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:12:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-10 04:12:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-01-10 04:12:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4952830188679245) internal successors, (317), 212 states have internal predecessors, (317), 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 04:12:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 317 transitions. [2022-01-10 04:12:48,466 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 317 transitions. Word has length 24 [2022-01-10 04:12:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:48,467 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 317 transitions. [2022-01-10 04:12:48,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 04:12:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 317 transitions. [2022-01-10 04:12:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 04:12:48,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:48,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:12:48,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:12:48,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:48,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1192110763, now seen corresponding path program 1 times [2022-01-10 04:12:48,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:48,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479980159] [2022-01-10 04:12:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:48,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:48,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:48,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:48,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:12:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:50,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:50,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:12:50,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:50,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479980159] [2022-01-10 04:12:50,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479980159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:50,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:50,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:50,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335332852] [2022-01-10 04:12:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:50,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:50,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:50,807 INFO L87 Difference]: Start difference. First operand 213 states and 317 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:52,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:12:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:52,988 INFO L93 Difference]: Finished difference Result 418 states and 628 transitions. [2022-01-10 04:12:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:52,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-10 04:12:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:52,991 INFO L225 Difference]: With dead ends: 418 [2022-01-10 04:12:52,991 INFO L226 Difference]: Without dead ends: 313 [2022-01-10 04:12:52,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 04:12:52,993 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:52,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 461 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:12:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-10 04:12:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-01-10 04:12:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4871794871794872) internal successors, (464), 312 states have internal predecessors, (464), 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 04:12:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 464 transitions. [2022-01-10 04:12:53,019 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 464 transitions. Word has length 39 [2022-01-10 04:12:53,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:53,020 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 464 transitions. [2022-01-10 04:12:53,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 464 transitions. [2022-01-10 04:12:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 04:12:53,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:53,029 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 04:12:53,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:12:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:53,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1701754597, now seen corresponding path program 1 times [2022-01-10 04:12:53,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301004222] [2022-01-10 04:12:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:53,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:53,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:53,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:53,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:12:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:12:55,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:12:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:12:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 04:12:55,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:12:55,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:12:55,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301004222] [2022-01-10 04:12:55,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301004222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:12:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:12:55,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:12:55,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709744511] [2022-01-10 04:12:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:12:55,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:12:55,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:12:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:12:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:12:55,525 INFO L87 Difference]: Start difference. First operand 313 states and 464 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:57,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:12:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:12:57,675 INFO L93 Difference]: Finished difference Result 619 states and 923 transitions. [2022-01-10 04:12:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:12:57,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 04:12:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:12:57,678 INFO L225 Difference]: With dead ends: 619 [2022-01-10 04:12:57,678 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 04:12:57,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 04:12:57,680 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 125 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:12:57,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 468 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:12:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 04:12:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-01-10 04:12:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.4842615012106537) internal successors, (613), 413 states have internal predecessors, (613), 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 04:12:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 613 transitions. [2022-01-10 04:12:57,696 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 613 transitions. Word has length 57 [2022-01-10 04:12:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:12:57,697 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 613 transitions. [2022-01-10 04:12:57,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:12:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 613 transitions. [2022-01-10 04:12:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 04:12:57,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:12:57,698 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2022-01-10 04:12:57,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:12:57,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:12:57,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:12:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:12:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash -998738617, now seen corresponding path program 1 times [2022-01-10 04:12:57,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:12:57,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771770209] [2022-01-10 04:12:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:12:57,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:12:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:12:57,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:12:57,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:12:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:00,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:13:00,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 04:13:00,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:00,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771770209] [2022-01-10 04:13:00,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771770209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:00,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:00,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:13:00,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971294076] [2022-01-10 04:13:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:00,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:13:00,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:13:00,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:13:00,385 INFO L87 Difference]: Start difference. First operand 414 states and 613 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 04:13:02,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:02,541 INFO L93 Difference]: Finished difference Result 821 states and 1222 transitions. [2022-01-10 04:13:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:13:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 77 [2022-01-10 04:13:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:02,544 INFO L225 Difference]: With dead ends: 821 [2022-01-10 04:13:02,544 INFO L226 Difference]: Without dead ends: 515 [2022-01-10 04:13:02,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 04:13:02,545 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 126 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 04:13:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-01-10 04:13:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2022-01-10 04:13:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.482490272373541) internal successors, (762), 514 states have internal predecessors, (762), 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 04:13:02,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 762 transitions. [2022-01-10 04:13:02,558 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 762 transitions. Word has length 77 [2022-01-10 04:13:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:02,559 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 762 transitions. [2022-01-10 04:13:02,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 04:13:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 762 transitions. [2022-01-10 04:13:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 04:13:02,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:02,561 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-01-10 04:13:02,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:13:02,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:13:02,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:02,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 465583256, now seen corresponding path program 1 times [2022-01-10 04:13:02,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:02,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822529199] [2022-01-10 04:13:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:02,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:02,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:13:02,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:13:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:04,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:13:04,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-01-10 04:13:05,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:13:05,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:13:05,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822529199] [2022-01-10 04:13:05,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822529199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:13:05,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:13:05,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:13:05,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059526621] [2022-01-10 04:13:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:13:05,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:13:05,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:13:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:13:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:13:05,202 INFO L87 Difference]: Start difference. First operand 515 states and 762 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:07,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:13:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:13:07,411 INFO L93 Difference]: Finished difference Result 1024 states and 1521 transitions. [2022-01-10 04:13:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:13:07,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 04:13:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:13:07,414 INFO L225 Difference]: With dead ends: 1024 [2022-01-10 04:13:07,414 INFO L226 Difference]: Without dead ends: 617 [2022-01-10 04:13:07,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 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 04:13:07,416 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 127 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 04:13:07,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 468 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 04:13:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-01-10 04:13:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-01-10 04:13:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.4805194805194806) internal successors, (912), 616 states have internal predecessors, (912), 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 04:13:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 912 transitions. [2022-01-10 04:13:07,427 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 912 transitions. Word has length 98 [2022-01-10 04:13:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:13:07,428 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 912 transitions. [2022-01-10 04:13:07,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:13:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 912 transitions. [2022-01-10 04:13:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 04:13:07,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:13:07,431 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2022-01-10 04:13:07,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 04:13:07,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:13:07,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:13:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:13:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1561396444, now seen corresponding path program 1 times [2022-01-10 04:13:07,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:13:07,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240201908] [2022-01-10 04:13:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:13:07,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:13:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:13:07,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:13:07,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:13:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:13:11,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:13:11,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:13:14,079 INFO L353 Elim1Store]: treesize reduction 32, result has 78.5 percent of original size [2022-01-10 04:13:14,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1482 treesize of output 1090 [2022-01-10 04:13:17,284 INFO L353 Elim1Store]: treesize reduction 1374, result has 25.4 percent of original size [2022-01-10 04:13:17,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 9 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 4114 treesize of output 2116 [2022-01-10 04:13:17,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2389 treesize of output 2143 [2022-01-10 04:13:17,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1655 treesize of output 1543 [2022-01-10 04:13:17,719 INFO L244 Elim1Store]: Index analysis took 142 ms [2022-01-10 04:13:17,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:13:17,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1509 treesize of output 1333 [2022-01-10 04:13:18,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1826 treesize of output 1394 [2022-01-10 04:13:18,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 04:13:18,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1315 treesize of output 1215 [2022-01-10 04:13:18,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 113 [2022-01-10 04:13:18,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:18,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:19,275 INFO L244 Elim1Store]: Index analysis took 646 ms [2022-01-10 04:13:19,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 87 [2022-01-10 04:13:19,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:19,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:19,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:20,555 INFO L244 Elim1Store]: Index analysis took 623 ms [2022-01-10 04:13:21,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111 [2022-01-10 04:13:21,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:13:21,810 INFO L244 Elim1Store]: Index analysis took 603 ms [2022-01-10 04:13:22,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111