/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/seq-pthread/cs_stateful-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:27:29,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:27:29,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:27:29,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:27:29,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:27:29,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:27:29,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:27:29,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:27:29,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:27:29,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:27:29,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:27:29,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:27:29,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:27:29,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:27:29,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:27:29,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:27:29,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:27:29,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:27:29,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:27:29,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:27:29,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:27:29,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:27:29,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:27:29,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:27:29,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:27:29,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:27:29,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:27:29,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:27:29,082 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 07:27:29,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:27:29,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:27:29,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:27:29,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:27:29,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:27:29,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:27:29,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:27:29,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:27:29,109 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:27:29,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:27:29,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:29,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:27:29,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:27:29,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:27:29,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:27:29,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:27:29,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:27:29,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:27:29,281 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:27:29,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_stateful-1.i [2022-01-10 07:27:29,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061d83f31/8954a8e46e7644eab72e87e6e442fc2f/FLAG3a69a2165 [2022-01-10 07:27:29,763 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:27:29,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i [2022-01-10 07:27:29,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061d83f31/8954a8e46e7644eab72e87e6e442fc2f/FLAG3a69a2165 [2022-01-10 07:27:29,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/061d83f31/8954a8e46e7644eab72e87e6e442fc2f [2022-01-10 07:27:29,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:27:29,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:27:29,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:29,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:27:29,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:27:29,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7102ee9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:29, skipping insertion in model container [2022-01-10 07:27:29,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:29" (1/1) ... [2022-01-10 07:27:29,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:27:29,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:27:30,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i[23400,23413] [2022-01-10 07:27:30,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:30,163 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:27:30,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stateful-1.i[23400,23413] [2022-01-10 07:27:30,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:30,229 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:27:30,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30 WrapperNode [2022-01-10 07:27:30,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:30,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:30,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:27:30,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:27:30,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,280 INFO L137 Inliner]: procedures = 148, calls = 231, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 548 [2022-01-10 07:27:30,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:30,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:27:30,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:27:30,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:27:30,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:27:30,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:27:30,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:27:30,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:27:30,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (1/1) ... [2022-01-10 07:27:30,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:27:30,365 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 07:27:30,371 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 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 07:27:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2022-01-10 07:27:30,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 07:27:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 07:27:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:30,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 07:27:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 07:27:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:27:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 07:27:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 07:27:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 07:27:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:27:30,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:27:30,533 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:27:30,534 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:27:30,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);main_thread_#res#1.base, main_thread_#res#1.offset := 0bv64, 0bv64;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);main_thread_#res#1.base, main_thread_#res#1.offset := 0bv64, 0bv64;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:30,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);main_thread_#res#1.base, main_thread_#res#1.offset := 0bv64, 0bv64;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-01-10 07:27:33,322 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:27:33,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:27:33,334 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 07:27:33,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:33 BoogieIcfgContainer [2022-01-10 07:27:33,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:27:33,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:27:33,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:27:33,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:27:33,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:27:29" (1/3) ... [2022-01-10 07:27:33,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741322b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:33, skipping insertion in model container [2022-01-10 07:27:33,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:30" (2/3) ... [2022-01-10 07:27:33,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741322b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:33, skipping insertion in model container [2022-01-10 07:27:33,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:33" (3/3) ... [2022-01-10 07:27:33,342 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2022-01-10 07:27:33,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:27:33,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:27:33,391 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:27:33,403 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 07:27:33,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:27:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 07:27:33,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:33,424 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] [2022-01-10 07:27:33,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:33,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1724368089, now seen corresponding path program 1 times [2022-01-10 07:27:33,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:33,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170983680] [2022-01-10 07:27:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:33,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:33,441 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 07:27:33,445 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 07:27:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:34,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:27:34,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:34,293 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 07:27:34,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:34,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:34,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170983680] [2022-01-10 07:27:34,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170983680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:34,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:34,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:27:34,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494261374] [2022-01-10 07:27:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:34,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:27:34,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:27:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:34,347 INFO L87 Difference]: Start difference. First operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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 07:27:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:34,398 INFO L93 Difference]: Finished difference Result 342 states and 560 transitions. [2022-01-10 07:27:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:27:34,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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 32 [2022-01-10 07:27:34,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:34,411 INFO L225 Difference]: With dead ends: 342 [2022-01-10 07:27:34,412 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 07:27:34,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:34,418 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:34,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 07:27:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-01-10 07:27:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 118 states have (on average 1.38135593220339) internal successors, (163), 118 states have internal predecessors, (163), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 247 transitions. [2022-01-10 07:27:34,455 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 247 transitions. Word has length 32 [2022-01-10 07:27:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:34,455 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 247 transitions. [2022-01-10 07:27:34,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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 07:27:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 247 transitions. [2022-01-10 07:27:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 07:27:34,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:34,458 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] [2022-01-10 07:27:34,484 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 07:27:34,675 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 07:27:34,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash -947270443, now seen corresponding path program 1 times [2022-01-10 07:27:34,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:34,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054198199] [2022-01-10 07:27:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:34,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:34,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:34,678 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 07:27:34,687 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 07:27:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:35,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:27:35,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:35,509 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 07:27:35,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:35,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054198199] [2022-01-10 07:27:35,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054198199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:35,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:35,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400325230] [2022-01-10 07:27:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:35,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:35,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:35,512 INFO L87 Difference]: Start difference. First operand 168 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 07:27:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:35,745 INFO L93 Difference]: Finished difference Result 334 states and 492 transitions. [2022-01-10 07:27:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-01-10 07:27:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:35,755 INFO L225 Difference]: With dead ends: 334 [2022-01-10 07:27:35,755 INFO L226 Difference]: Without dead ends: 173 [2022-01-10 07:27:35,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 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 07:27:35,757 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 5 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:35,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 484 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:27:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-10 07:27:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2022-01-10 07:27:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 248 transitions. [2022-01-10 07:27:35,769 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 248 transitions. Word has length 32 [2022-01-10 07:27:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 248 transitions. [2022-01-10 07:27:35,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 07:27:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 248 transitions. [2022-01-10 07:27:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 07:27:35,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:35,771 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] [2022-01-10 07:27:35,805 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 07:27:36,005 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 07:27:36,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1488698589, now seen corresponding path program 1 times [2022-01-10 07:27:36,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:36,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759228442] [2022-01-10 07:27:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:36,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:36,009 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 07:27:36,010 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 07:27:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:36,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:27:36,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:27:36,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:36,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:36,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759228442] [2022-01-10 07:27:36,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759228442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:36,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:36,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:36,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232304905] [2022-01-10 07:27:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:36,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:36,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:36,854 INFO L87 Difference]: Start difference. First operand 169 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 07:27:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:36,922 INFO L93 Difference]: Finished difference Result 337 states and 496 transitions. [2022-01-10 07:27:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:36,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2022-01-10 07:27:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:36,933 INFO L225 Difference]: With dead ends: 337 [2022-01-10 07:27:36,934 INFO L226 Difference]: Without dead ends: 171 [2022-01-10 07:27:36,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 07:27:36,936 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:36,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 487 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:27:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-01-10 07:27:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2022-01-10 07:27:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 249 transitions. [2022-01-10 07:27:36,951 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 249 transitions. Word has length 36 [2022-01-10 07:27:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 249 transitions. [2022-01-10 07:27:36,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 07:27:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 249 transitions. [2022-01-10 07:27:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 07:27:36,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:36,952 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] [2022-01-10 07:27:36,975 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 07:27:37,164 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 07:27:37,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash 967627515, now seen corresponding path program 1 times [2022-01-10 07:27:37,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:37,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489672190] [2022-01-10 07:27:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:37,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:37,167 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 07:27:37,168 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 07:27:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:37,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:27:37,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:27:38,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:27:38,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:38,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489672190] [2022-01-10 07:27:38,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489672190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:38,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:38,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:27:38,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753542492] [2022-01-10 07:27:38,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:38,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:27:38,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:27:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:38,110 INFO L87 Difference]: Start difference. First operand 170 states and 249 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 07:27:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:38,264 INFO L93 Difference]: Finished difference Result 341 states and 501 transitions. [2022-01-10 07:27:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 38 [2022-01-10 07:27:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:38,268 INFO L225 Difference]: With dead ends: 341 [2022-01-10 07:27:38,268 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:27:38,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:38,273 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 3 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:38,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 971 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:27:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:27:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:27:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 124 states have internal predecessors, (169), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 253 transitions. [2022-01-10 07:27:38,293 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 253 transitions. Word has length 38 [2022-01-10 07:27:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 253 transitions. [2022-01-10 07:27:38,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 07:27:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 253 transitions. [2022-01-10 07:27:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 07:27:38,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:38,297 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:38,319 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 07:27:38,515 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 07:27:38,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:38,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:38,516 INFO L85 PathProgramCache]: Analyzing trace with hash -624054089, now seen corresponding path program 2 times [2022-01-10 07:27:38,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:38,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232794281] [2022-01-10 07:27:38,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:27:38,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:38,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:38,518 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 07:27:38,519 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 07:27:39,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:27:39,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:27:39,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:27:39,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:27:39,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:39,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232794281] [2022-01-10 07:27:39,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232794281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:39,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:39,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:39,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649686496] [2022-01-10 07:27:39,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:39,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:39,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:39,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:39,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:39,395 INFO L87 Difference]: Start difference. First operand 174 states and 253 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 07:27:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:39,419 INFO L93 Difference]: Finished difference Result 330 states and 483 transitions. [2022-01-10 07:27:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 42 [2022-01-10 07:27:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:39,420 INFO L225 Difference]: With dead ends: 330 [2022-01-10 07:27:39,420 INFO L226 Difference]: Without dead ends: 174 [2022-01-10 07:27:39,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 07:27:39,421 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:39,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 488 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-01-10 07:27:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-01-10 07:27:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 124 states have internal predecessors, (168), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 252 transitions. [2022-01-10 07:27:39,439 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 252 transitions. Word has length 42 [2022-01-10 07:27:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 252 transitions. [2022-01-10 07:27:39,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 07:27:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 252 transitions. [2022-01-10 07:27:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 07:27:39,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:39,440 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:39,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:39,640 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 07:27:39,641 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1665700161, now seen corresponding path program 1 times [2022-01-10 07:27:39,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249461123] [2022-01-10 07:27:39,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:39,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:39,643 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 07:27:39,644 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 07:27:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:40,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:27:40,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 07:27:40,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 07:27:40,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:40,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249461123] [2022-01-10 07:27:40,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249461123] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:40,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:40,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:27:40,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000772057] [2022-01-10 07:27:40,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:40,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:27:40,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:40,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:27:40,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:40,755 INFO L87 Difference]: Start difference. First operand 174 states and 252 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 07:27:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:41,231 INFO L93 Difference]: Finished difference Result 354 states and 511 transitions. [2022-01-10 07:27:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2022-01-10 07:27:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:41,233 INFO L225 Difference]: With dead ends: 354 [2022-01-10 07:27:41,233 INFO L226 Difference]: Without dead ends: 193 [2022-01-10 07:27:41,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:41,234 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 14 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:41,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 962 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:27:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-10 07:27:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 184. [2022-01-10 07:27:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 134 states have (on average 1.335820895522388) internal successors, (179), 134 states have internal predecessors, (179), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 07:27:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 263 transitions. [2022-01-10 07:27:41,240 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 263 transitions. Word has length 60 [2022-01-10 07:27:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:41,240 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 263 transitions. [2022-01-10 07:27:41,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 07:27:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 263 transitions. [2022-01-10 07:27:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:27:41,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:41,241 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:41,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:41,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:27:41,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 338800163, now seen corresponding path program 2 times [2022-01-10 07:27:41,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:41,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498756216] [2022-01-10 07:27:41,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:27:41,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:41,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:27:41,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:27:42,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:27:42,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:27:42,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:27:42,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 07:27:42,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:42,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:42,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498756216] [2022-01-10 07:27:42,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498756216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:42,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:42,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:27:42,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186847013] [2022-01-10 07:27:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:42,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:27:42,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:27:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:42,579 INFO L87 Difference]: Start difference. First operand 184 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 07:27:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:43,263 INFO L93 Difference]: Finished difference Result 431 states and 654 transitions. [2022-01-10 07:27:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:27:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-01-10 07:27:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:43,268 INFO L225 Difference]: With dead ends: 431 [2022-01-10 07:27:43,268 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 07:27:43,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:43,269 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 346 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:43,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 451 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 07:27:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 07:27:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 244. [2022-01-10 07:27:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 184 states have (on average 1.25) internal successors, (230), 159 states have internal predecessors, (230), 48 states have call successors, (48), 8 states have call predecessors, (48), 11 states have return successors, (82), 76 states have call predecessors, (82), 48 states have call successors, (82) [2022-01-10 07:27:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 360 transitions. [2022-01-10 07:27:43,295 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 360 transitions. Word has length 70 [2022-01-10 07:27:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:43,296 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 360 transitions. [2022-01-10 07:27:43,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 07:27:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 360 transitions. [2022-01-10 07:27:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:27:43,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:43,298 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:43,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:43,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:27:43,520 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -170672927, now seen corresponding path program 1 times [2022-01-10 07:27:43,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636634112] [2022-01-10 07:27:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:43,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:43,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:27:43,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:27:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:44,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:27:44,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 07:27:44,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:44,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:44,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636634112] [2022-01-10 07:27:44,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636634112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:44,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:44,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:27:44,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782567086] [2022-01-10 07:27:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:44,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:27:44,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:27:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:44,828 INFO L87 Difference]: Start difference. First operand 244 states and 360 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 07:27:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:45,911 INFO L93 Difference]: Finished difference Result 536 states and 833 transitions. [2022-01-10 07:27:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:27:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2022-01-10 07:27:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:45,914 INFO L225 Difference]: With dead ends: 536 [2022-01-10 07:27:45,914 INFO L226 Difference]: Without dead ends: 508 [2022-01-10 07:27:45,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:45,915 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 328 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:45,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 841 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 07:27:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-01-10 07:27:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2022-01-10 07:27:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 364 states have (on average 1.2774725274725274) internal successors, (465), 304 states have internal predecessors, (465), 115 states have call successors, (115), 16 states have call predecessors, (115), 26 states have return successors, (220), 185 states have call predecessors, (220), 115 states have call successors, (220) [2022-01-10 07:27:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 800 transitions. [2022-01-10 07:27:45,941 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 800 transitions. Word has length 70 [2022-01-10 07:27:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:45,941 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 800 transitions. [2022-01-10 07:27:45,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 07:27:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 800 transitions. [2022-01-10 07:27:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:27:45,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:45,943 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:45,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:27:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:27:46,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1692849382, now seen corresponding path program 1 times [2022-01-10 07:27:46,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:46,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367073863] [2022-01-10 07:27:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:46,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:46,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:27:46,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:27:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:49,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:49,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:49,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 16 [2022-01-10 07:27:49,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-01-10 07:27:49,605 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 11 treesize of output 7 [2022-01-10 07:27:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 07:27:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:49,743 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 12 treesize of output 8 [2022-01-10 07:27:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-10 07:27:50,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:50,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367073863] [2022-01-10 07:27:50,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367073863] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:50,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:50,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:27:50,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501351482] [2022-01-10 07:27:50,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:50,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:27:50,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:50,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:27:50,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:50,085 INFO L87 Difference]: Start difference. First operand 506 states and 800 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-10 07:27:52,125 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 07:27:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:54,372 INFO L93 Difference]: Finished difference Result 1160 states and 1871 transitions. [2022-01-10 07:27:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:27:54,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 129 [2022-01-10 07:27:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:54,405 INFO L225 Difference]: With dead ends: 1160 [2022-01-10 07:27:54,406 INFO L226 Difference]: Without dead ends: 1132 [2022-01-10 07:27:54,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:27:54,407 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 494 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 297 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:54,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 867 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 468 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 07:27:54,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-01-10 07:27:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1080. [2022-01-10 07:27:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 758 states have (on average 1.2902374670184698) internal successors, (978), 632 states have internal predecessors, (978), 257 states have call successors, (257), 32 states have call predecessors, (257), 64 states have return successors, (540), 415 states have call predecessors, (540), 257 states have call successors, (540) [2022-01-10 07:27:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1775 transitions. [2022-01-10 07:27:54,453 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1775 transitions. Word has length 129 [2022-01-10 07:27:54,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:54,453 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 1775 transitions. [2022-01-10 07:27:54,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-10 07:27:54,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1775 transitions. [2022-01-10 07:27:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 07:27:54,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:54,456 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:54,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:54,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:27:54,684 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1317733594, now seen corresponding path program 1 times [2022-01-10 07:27:54,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:54,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617252719] [2022-01-10 07:27:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:54,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:54,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:27:54,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:28:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:05,499 WARN L261 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 798 conjunts are in the unsatisfiable core [2022-01-10 07:28:05,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:05,884 INFO L353 Elim1Store]: treesize reduction 144, result has 14.8 percent of original size [2022-01-10 07:28:05,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 110 [2022-01-10 07:28:07,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-01-10 07:28:08,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 07:28:08,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2022-01-10 07:28:10,199 INFO L353 Elim1Store]: treesize reduction 47, result has 29.9 percent of original size [2022-01-10 07:28:10,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 59 [2022-01-10 07:28:10,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 56 [2022-01-10 07:28:11,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 72 [2022-01-10 07:28:11,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 65 [2022-01-10 07:28:17,941 INFO L353 Elim1Store]: treesize reduction 37, result has 44.8 percent of original size [2022-01-10 07:28:17,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 97 [2022-01-10 07:28:17,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 94 [2022-01-10 07:28:42,471 WARN L228 SmtUtils]: Spent 12.86s on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-10 07:28:42,471 INFO L353 Elim1Store]: treesize reduction 52, result has 66.5 percent of original size [2022-01-10 07:28:42,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 189 [2022-01-10 07:28:42,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 142