/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_srvr.blast.12.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:13:56,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:13:56,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:13:56,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:13:56,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:13:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:13:56,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:13:56,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:13:56,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:13:56,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:13:56,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:13:56,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:13:56,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:13:56,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:13:56,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:13:56,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:13:56,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:13:56,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:13:56,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:13:56,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:13:56,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:13:56,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:13:56,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:13:56,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:13:56,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:13:56,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:13:56,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:13:56,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:13:56,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:13:56,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:13:56,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:13:56,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:13:56,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:13:56,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:13:56,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:13:56,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:13:56,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:13:56,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:13:56,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:13:56,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:13:56,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:13:56,655 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 04:13:56,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:13:56,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:13:56,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:13:56,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:13:56,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:13:56,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:13:56,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:13:56,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:13:56,670 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:13:56,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:13:56,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:13:56,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:13:56,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:13:56,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:13:56,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:13:56,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:13:56,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:13:56,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:13:56,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:13:56,852 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:13:56,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.12.i.cil-1.c [2022-01-10 04:13:56,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3000092/77e44078c1ce428295fed5f888e9aad1/FLAG3e32b6356 [2022-01-10 04:13:57,370 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:13:57,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.12.i.cil-1.c [2022-01-10 04:13:57,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3000092/77e44078c1ce428295fed5f888e9aad1/FLAG3e32b6356 [2022-01-10 04:13:57,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3000092/77e44078c1ce428295fed5f888e9aad1 [2022-01-10 04:13:57,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:13:57,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:13:57,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:13:57,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:13:57,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:13:57,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:57,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6499f84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57, skipping insertion in model container [2022-01-10 04:13:57,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:57,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:13:57,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:13:57,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2022-01-10 04:13:57,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:57,763 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 04:13:57,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:13:57,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2022-01-10 04:13:57,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:57,890 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:13:57,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2022-01-10 04:13:57,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:13:57,994 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:13:57,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57 WrapperNode [2022-01-10 04:13:57,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:13:58,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:13:58,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:13:58,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:13:58,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,070 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 790 [2022-01-10 04:13:58,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:13:58,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:13:58,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:13:58,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:13:58,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:13:58,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:13:58,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:13:58,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:13:58,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (1/1) ... [2022-01-10 04:13:58,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:13:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:13:58,140 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 04:13:58,155 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 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 04:13:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 04:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 04:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 04:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:13:58,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 04:13:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 04:13:58,300 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:13:58,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:13:58,312 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:14:11,764 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 04:14:11,764 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 04:14:11,765 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:14:11,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:14:11,770 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:14:11,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:11 BoogieIcfgContainer [2022-01-10 04:14:11,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:14:11,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:14:11,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:14:11,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:14:11,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:13:57" (1/3) ... [2022-01-10 04:14:11,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bc17ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:11, skipping insertion in model container [2022-01-10 04:14:11,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:13:57" (2/3) ... [2022-01-10 04:14:11,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bc17ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:14:11, skipping insertion in model container [2022-01-10 04:14:11,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:14:11" (3/3) ... [2022-01-10 04:14:11,776 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-1.c [2022-01-10 04:14:11,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:14:11,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:14:11,809 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:14:11,813 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 04:14:11,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:14:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 150 states have (on average 1.72) internal successors, (258), 151 states have internal predecessors, (258), 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 04:14:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:14:11,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:11,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:11,831 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1692197635, now seen corresponding path program 1 times [2022-01-10 04:14:11,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:11,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754714207] [2022-01-10 04:14:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:11,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:11,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:11,847 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 04:14:11,857 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 04:14:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:13,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 04:14:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:13,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:13,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 04:14:14,701 INFO L353 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2022-01-10 04:14:14,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:14,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2022-01-10 04:14:15,090 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:14:15,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:15,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:14:15,171 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 19 treesize of output 7 [2022-01-10 04:14:15,181 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 19 treesize of output 7 [2022-01-10 04:14:15,349 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 04:14:15,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:15,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:15,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754714207] [2022-01-10 04:14:15,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754714207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:15,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:15,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:14:15,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665689985] [2022-01-10 04:14:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:15,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:14:15,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:14:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:14:15,374 INFO L87 Difference]: Start difference. First operand has 152 states, 150 states have (on average 1.72) internal successors, (258), 151 states have internal predecessors, (258), 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 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:17,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:19,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:20,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:24,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:31,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:32,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:34,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:35,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:37,995 INFO L93 Difference]: Finished difference Result 305 states and 515 transitions. [2022-01-10 04:14:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:14:38,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-10 04:14:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:38,007 INFO L225 Difference]: With dead ends: 305 [2022-01-10 04:14:38,007 INFO L226 Difference]: Without dead ends: 139 [2022-01-10 04:14:38,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:14:38,012 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 10 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:38,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 841 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 3 Unknown, 0 Unchecked, 22.5s Time] [2022-01-10 04:14:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-10 04:14:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-01-10 04:14:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 138 states have internal predecessors, (213), 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 04:14:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2022-01-10 04:14:38,046 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 43 [2022-01-10 04:14:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:38,046 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2022-01-10 04:14:38,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2022-01-10 04:14:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:14:38,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:38,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:38,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:14:38,252 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 04:14:38,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2115844357, now seen corresponding path program 1 times [2022-01-10 04:14:38,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920911355] [2022-01-10 04:14:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:38,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:38,255 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 04:14:38,257 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 04:14:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:39,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 04:14:39,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 04:14:39,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 04:14:40,529 INFO L353 Elim1Store]: treesize reduction 1124, result has 5.4 percent of original size [2022-01-10 04:14:40,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 74 [2022-01-10 04:14:41,140 INFO L353 Elim1Store]: treesize reduction 825, result has 7.2 percent of original size [2022-01-10 04:14:41,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 66 treesize of output 86 [2022-01-10 04:14:41,658 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:14:41,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 23 [2022-01-10 04:14:41,750 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 04:14:41,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:14:41,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:14:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920911355] [2022-01-10 04:14:41,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920911355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:14:41,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:14:41,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:14:41,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721325558] [2022-01-10 04:14:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:14:41,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:14:41,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:14:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:14:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:14:41,752 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:43,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:46,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:47,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:53,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:56,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:14:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:14:57,249 INFO L93 Difference]: Finished difference Result 296 states and 454 transitions. [2022-01-10 04:14:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:14:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-10 04:14:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:14:57,254 INFO L225 Difference]: With dead ends: 296 [2022-01-10 04:14:57,254 INFO L226 Difference]: Without dead ends: 167 [2022-01-10 04:14:57,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:14:57,255 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 22 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:14:57,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 479 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 148 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-01-10 04:14:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-10 04:14:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2022-01-10 04:14:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 149 states have internal predecessors, (232), 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 04:14:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 232 transitions. [2022-01-10 04:14:57,262 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 232 transitions. Word has length 43 [2022-01-10 04:14:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:14:57,262 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 232 transitions. [2022-01-10 04:14:57,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:14:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 232 transitions. [2022-01-10 04:14:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 04:14:57,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:14:57,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:14:57,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 04:14:57,468 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 04:14:57,469 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:14:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:14:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1636123909, now seen corresponding path program 1 times [2022-01-10 04:14:57,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:14:57,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792833057] [2022-01-10 04:14:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:14:57,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:14:57,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:14:57,471 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 04:14:57,471 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 04:14:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:14:59,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:14:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:14:59,912 INFO L353 Elim1Store]: treesize reduction 1104, result has 5.5 percent of original size [2022-01-10 04:14:59,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 73 [2022-01-10 04:15:00,174 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:15:00,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:15:00,261 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:15:00,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2022-01-10 04:15:00,414 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 04:15:00,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:15:00,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:15:00,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792833057] [2022-01-10 04:15:00,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792833057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:15:00,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:15:00,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:15:00,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158168711] [2022-01-10 04:15:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:15:00,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:15:00,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:15:00,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:15:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:15:00,416 INFO L87 Difference]: Start difference. First operand 150 states and 232 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 04:15:02,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:05,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:10,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 04:15:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:15:11,563 INFO L93 Difference]: Finished difference Result 290 states and 446 transitions. [2022-01-10 04:15:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:15:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2022-01-10 04:15:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:15:11,567 INFO L225 Difference]: With dead ends: 290 [2022-01-10 04:15:11,567 INFO L226 Difference]: Without dead ends: 161 [2022-01-10 04:15:11,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:15:11,568 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 17 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:15:11,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 508 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 2 Unknown, 20 Unchecked, 11.1s Time] [2022-01-10 04:15:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-10 04:15:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2022-01-10 04:15:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.5503355704697988) internal successors, (231), 149 states have internal predecessors, (231), 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 04:15:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2022-01-10 04:15:11,587 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 56 [2022-01-10 04:15:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:15:11,588 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2022-01-10 04:15:11,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 04:15:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2022-01-10 04:15:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 04:15:11,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:15:11,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:15:11,632 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 04:15:11,799 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 04:15:11,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:15:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:15:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash -301361520, now seen corresponding path program 1 times [2022-01-10 04:15:11,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:15:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818938838] [2022-01-10 04:15:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:15:11,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:15:11,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:15:11,802 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 04:15:11,803 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 04:15:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:15:13,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:15:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:15:14,420 INFO L353 Elim1Store]: treesize reduction 1105, result has 5.5 percent of original size [2022-01-10 04:15:14,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 73 [2022-01-10 04:15:14,784 INFO L353 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2022-01-10 04:15:14,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2022-01-10 04:15:14,850 INFO L353 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-01-10 04:15:14,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2022-01-10 04:15:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:15:15,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:15:15,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:15:15,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818938838] [2022-01-10 04:15:15,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818938838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:15:15,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:15:15,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:15:15,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165532146] [2022-01-10 04:15:15,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:15:15,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:15:15,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:15:15,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:15:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:15:15,054 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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)