/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_sync.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:27:29,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:27:29,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:27:29,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:27:29,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:27:29,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:27:29,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:27:29,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:27:29,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:27:29,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:27:29,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:27:29,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:27:29,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:27:29,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:27:29,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:27:29,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:27:29,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:27:29,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:27:29,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:27:29,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:27:29,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:27:29,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:27:29,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:27:29,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:27:29,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:27:29,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:27:29,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:27:29,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:27:29,984 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 07:27:30,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:27:30,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:27:30,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:27:30,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:27:30,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:27:30,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:27:30,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:27:30,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:27:30,015 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:27:30,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:27:30,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:27:30,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:30,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:27:30,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:27:30,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:27:30,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:27:30,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:27:30,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:27:30,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:27:30,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:27:30,253 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:27:30,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_sync.i [2022-01-10 07:27:30,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed9b0671/22418088d8ae4326b1e950d1dfd16dc8/FLAG94d3e53a3 [2022-01-10 07:27:30,794 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:27:30,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_sync.i [2022-01-10 07:27:30,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed9b0671/22418088d8ae4326b1e950d1dfd16dc8/FLAG94d3e53a3 [2022-01-10 07:27:31,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed9b0671/22418088d8ae4326b1e950d1dfd16dc8 [2022-01-10 07:27:31,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:27:31,343 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:27:31,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:31,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:27:31,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:27:31,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:31" (1/1) ... [2022-01-10 07:27:31,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3ecd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:31, skipping insertion in model container [2022-01-10 07:27:31,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:31" (1/1) ... [2022-01-10 07:27:31,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:27:31,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:27:31,887 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_sync.i[34698,34711] [2022-01-10 07:27:31,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:32,026 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:27:32,093 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_sync.i[34698,34711] [2022-01-10 07:27:32,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:27:32,212 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:27:32,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32 WrapperNode [2022-01-10 07:27:32,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:27:32,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:32,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:27:32,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:27:32,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,258 INFO L137 Inliner]: procedures = 249, calls = 244, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 529 [2022-01-10 07:27:32,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:27:32,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:27:32,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:27:32,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:27:32,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:27:32,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:27:32,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:27:32,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:27:32,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (1/1) ... [2022-01-10 07:27:32,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:27:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:27:32,361 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 07:27:32,363 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 07:27:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 07:27:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 07:27:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 07:27:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2022-01-10 07:27:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 07:27:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 07:27:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 07:27:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:27:32,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:27:32,528 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:27:32,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:27:32,874 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:32,874 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: 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 07:27:32,874 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:32,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: 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 07:27:32,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L991: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:27:32,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: 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 07:27:32,875 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:27:35,356 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:27:35,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:27:35,362 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 07:27:35,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:35 BoogieIcfgContainer [2022-01-10 07:27:35,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:27:35,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:27:35,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:27:35,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:27:35,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:27:31" (1/3) ... [2022-01-10 07:27:35,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d4e7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:35, skipping insertion in model container [2022-01-10 07:27:35,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:32" (2/3) ... [2022-01-10 07:27:35,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d4e7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:35, skipping insertion in model container [2022-01-10 07:27:35,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:35" (3/3) ... [2022-01-10 07:27:35,370 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_sync.i [2022-01-10 07:27:35,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:27:35,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:27:35,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:27:35,423 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 07:27:35,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:27:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 128 states have internal predecessors, (185), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:27:35,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:35,462 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:35,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1902090431, now seen corresponding path program 1 times [2022-01-10 07:27:35,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:35,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733159272] [2022-01-10 07:27:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:35,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:35,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:35,480 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 07:27:35,481 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 07:27:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:36,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:27:36,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-01-10 07:27:36,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:36,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:36,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733159272] [2022-01-10 07:27:36,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733159272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:36,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:36,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:27:36,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174499923] [2022-01-10 07:27:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:36,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:27:36,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:27:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:27:36,362 INFO L87 Difference]: Start difference. First operand has 194 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 128 states have internal predecessors, (185), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:27:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:36,395 INFO L93 Difference]: Finished difference Result 386 states and 633 transitions. [2022-01-10 07:27:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:27:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-01-10 07:27:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:36,404 INFO L225 Difference]: With dead ends: 386 [2022-01-10 07:27:36,404 INFO L226 Difference]: Without dead ends: 190 [2022-01-10 07:27:36,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 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 07:27:36,413 INFO L933 BasicCegarLoop]: 288 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, 288 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 07:27:36,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-10 07:27:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-01-10 07:27:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 124 states have (on average 1.403225806451613) internal successors, (174), 124 states have internal predecessors, (174), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 284 transitions. [2022-01-10 07:27:36,489 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 284 transitions. Word has length 72 [2022-01-10 07:27:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:36,489 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 284 transitions. [2022-01-10 07:27:36,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:27:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 284 transitions. [2022-01-10 07:27:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 07:27:36,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:36,492 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:36,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:27:36,712 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 07:27:36,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:36,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1312194389, now seen corresponding path program 1 times [2022-01-10 07:27:36,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:36,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038471839] [2022-01-10 07:27:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:36,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:36,715 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 07:27:36,717 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 07:27:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:37,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:27:37,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-10 07:27:37,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:37,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:37,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038471839] [2022-01-10 07:27:37,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038471839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:37,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:37,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:37,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709994593] [2022-01-10 07:27:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:37,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:37,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:37,588 INFO L87 Difference]: Start difference. First operand 190 states and 284 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:37,904 INFO L93 Difference]: Finished difference Result 378 states and 566 transitions. [2022-01-10 07:27:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 72 [2022-01-10 07:27:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:37,921 INFO L225 Difference]: With dead ends: 378 [2022-01-10 07:27:37,921 INFO L226 Difference]: Without dead ends: 194 [2022-01-10 07:27:37,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 07:27:37,924 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:37,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 560 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:27:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-10 07:27:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-01-10 07:27:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 125 states have (on average 1.4) internal successors, (175), 125 states have internal predecessors, (175), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 285 transitions. [2022-01-10 07:27:37,955 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 285 transitions. Word has length 72 [2022-01-10 07:27:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:37,956 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 285 transitions. [2022-01-10 07:27:37,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 285 transitions. [2022-01-10 07:27:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 07:27:37,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:37,958 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:37,978 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 07:27:38,167 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 07:27:38,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1569921272, now seen corresponding path program 1 times [2022-01-10 07:27:38,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:38,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526237231] [2022-01-10 07:27:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:38,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:38,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:38,170 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 07:27:38,172 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 07:27:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:38,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:27:38,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-10 07:27:39,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:39,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:39,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526237231] [2022-01-10 07:27:39,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526237231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:39,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:39,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:39,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042093321] [2022-01-10 07:27:39,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:39,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:39,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:39,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:39,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:39,071 INFO L87 Difference]: Start difference. First operand 191 states and 285 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:39,147 INFO L93 Difference]: Finished difference Result 381 states and 570 transitions. [2022-01-10 07:27:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2022-01-10 07:27:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:39,157 INFO L225 Difference]: With dead ends: 381 [2022-01-10 07:27:39,157 INFO L226 Difference]: Without dead ends: 193 [2022-01-10 07:27:39,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 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 07:27:39,159 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 561 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 07:27:39,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 561 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:27:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-10 07:27:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2022-01-10 07:27:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 126 states have (on average 1.3968253968253967) internal successors, (176), 126 states have internal predecessors, (176), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2022-01-10 07:27:39,184 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 75 [2022-01-10 07:27:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:39,184 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2022-01-10 07:27:39,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2022-01-10 07:27:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 07:27:39,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:39,186 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:39,213 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 07:27:39,393 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 07:27:39,394 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash 217866074, now seen corresponding path program 1 times [2022-01-10 07:27:39,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:39,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112858685] [2022-01-10 07:27:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:39,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:39,397 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 07:27:39,399 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 07:27:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:27:40,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-10 07:27:40,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-10 07:27:40,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112858685] [2022-01-10 07:27:40,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112858685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:40,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:40,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:27:40,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69025800] [2022-01-10 07:27:40,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:40,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:27:40,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:40,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:27:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:40,540 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-01-10 07:27:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:40,720 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2022-01-10 07:27:40,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:40,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 77 [2022-01-10 07:27:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:40,730 INFO L225 Difference]: With dead ends: 385 [2022-01-10 07:27:40,730 INFO L226 Difference]: Without dead ends: 196 [2022-01-10 07:27:40,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 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 07:27:40,732 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 4 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:40,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 840 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:27:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-10 07:27:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-01-10 07:27:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 130 states have internal predecessors, (180), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2022-01-10 07:27:40,741 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 77 [2022-01-10 07:27:40,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:40,741 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2022-01-10 07:27:40,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-01-10 07:27:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2022-01-10 07:27:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 07:27:40,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:40,743 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2022-01-10 07:27:40,763 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 07:27:40,961 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 07:27:40,962 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 971561630, now seen corresponding path program 2 times [2022-01-10 07:27:40,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892539769] [2022-01-10 07:27:40,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:27:40,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:40,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:40,964 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 07:27:40,966 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 07:27:41,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:27:41,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:27:41,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:27:41,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-01-10 07:27:41,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:41,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892539769] [2022-01-10 07:27:41,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892539769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:41,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:41,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:27:41,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313454856] [2022-01-10 07:27:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:27:41,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:27:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:27:41,885 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:41,909 INFO L93 Difference]: Finished difference Result 375 states and 558 transitions. [2022-01-10 07:27:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:27:41,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 81 [2022-01-10 07:27:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:41,911 INFO L225 Difference]: With dead ends: 375 [2022-01-10 07:27:41,911 INFO L226 Difference]: Without dead ends: 196 [2022-01-10 07:27:41,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 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 07:27:41,913 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 562 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 07:27:41,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:27:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-10 07:27:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-01-10 07:27:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 130 states have (on average 1.376923076923077) internal successors, (179), 130 states have internal predecessors, (179), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2022-01-10 07:27:41,921 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 81 [2022-01-10 07:27:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:41,921 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2022-01-10 07:27:41,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 07:27:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2022-01-10 07:27:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 07:27:41,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:41,923 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:41,945 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 07:27:42,139 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 07:27:42,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -768163553, now seen corresponding path program 1 times [2022-01-10 07:27:42,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:42,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509538082] [2022-01-10 07:27:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:42,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:42,142 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 07:27:42,144 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 07:27:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:43,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:27:43,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-01-10 07:27:43,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-01-10 07:27:43,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:43,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509538082] [2022-01-10 07:27:43,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509538082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:43,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:43,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:27:43,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502618996] [2022-01-10 07:27:43,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:43,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:27:43,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:27:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:27:43,504 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 07:27:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:43,947 INFO L93 Difference]: Finished difference Result 397 states and 584 transitions. [2022-01-10 07:27:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:43,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 109 [2022-01-10 07:27:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:43,951 INFO L225 Difference]: With dead ends: 397 [2022-01-10 07:27:43,951 INFO L226 Difference]: Without dead ends: 213 [2022-01-10 07:27:43,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 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 07:27:43,952 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 11 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:43,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:27:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-01-10 07:27:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 205. [2022-01-10 07:27:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 139 states have (on average 1.3597122302158273) internal successors, (189), 139 states have internal predecessors, (189), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-10 07:27:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 299 transitions. [2022-01-10 07:27:43,963 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 299 transitions. Word has length 109 [2022-01-10 07:27:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:43,963 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 299 transitions. [2022-01-10 07:27:43,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 07:27:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 299 transitions. [2022-01-10 07:27:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 07:27:43,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:43,965 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 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] [2022-01-10 07:27:43,997 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 07:27:44,165 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 07:27:44,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1532343052, now seen corresponding path program 2 times [2022-01-10 07:27:44,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:44,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418485288] [2022-01-10 07:27:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:27:44,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:44,175 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 07:27:44,177 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 07:27:45,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:27:45,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:27:45,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:27:45,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-01-10 07:27:45,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:45,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:45,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418485288] [2022-01-10 07:27:45,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418485288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:45,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:45,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:27:45,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121113698] [2022-01-10 07:27:45,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:45,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:27:45,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:45,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:27:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:45,645 INFO L87 Difference]: Start difference. First operand 205 states and 299 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:27:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:46,998 INFO L93 Difference]: Finished difference Result 447 states and 687 transitions. [2022-01-10 07:27:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:27:46,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-01-10 07:27:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:47,003 INFO L225 Difference]: With dead ends: 447 [2022-01-10 07:27:47,003 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 07:27:47,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 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 07:27:47,004 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 380 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:47,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 891 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 07:27:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 07:27:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2022-01-10 07:27:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 274 states have (on average 1.4087591240875912) internal successors, (386), 277 states have internal predecessors, (386), 120 states have call successors, (120), 20 states have call predecessors, (120), 24 states have return successors, (141), 121 states have call predecessors, (141), 120 states have call successors, (141) [2022-01-10 07:27:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 647 transitions. [2022-01-10 07:27:47,025 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 647 transitions. Word has length 118 [2022-01-10 07:27:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:47,026 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 647 transitions. [2022-01-10 07:27:47,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 07:27:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 647 transitions. [2022-01-10 07:27:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 07:27:47,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:47,029 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:47,060 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 07:27:47,250 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 07:27:47,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash 475166479, now seen corresponding path program 1 times [2022-01-10 07:27:47,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19083349] [2022-01-10 07:27:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:47,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:47,254 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 07:27:47,262 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 07:27:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:48,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:48,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:48,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 07:27:48,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 07:27:48,723 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 5 treesize of output 3 [2022-01-10 07:27:48,728 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 5 treesize of output 3 [2022-01-10 07:27:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-01-10 07:27:49,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:49,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19083349] [2022-01-10 07:27:49,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19083349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:49,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:49,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:27:49,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810764699] [2022-01-10 07:27:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:49,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:27:49,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:27:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:27:49,112 INFO L87 Difference]: Start difference. First operand 419 states and 647 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-01-10 07:27:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:49,837 INFO L93 Difference]: Finished difference Result 1227 states and 1924 transitions. [2022-01-10 07:27:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:49,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 221 [2022-01-10 07:27:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:49,859 INFO L225 Difference]: With dead ends: 1227 [2022-01-10 07:27:49,859 INFO L226 Difference]: Without dead ends: 832 [2022-01-10 07:27:49,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:49,862 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 338 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:49,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 903 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 07:27:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-10 07:27:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 425. [2022-01-10 07:27:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 278 states have (on average 1.4028776978417266) internal successors, (390), 283 states have internal predecessors, (390), 120 states have call successors, (120), 20 states have call predecessors, (120), 26 states have return successors, (146), 121 states have call predecessors, (146), 120 states have call successors, (146) [2022-01-10 07:27:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 656 transitions. [2022-01-10 07:27:49,897 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 656 transitions. Word has length 221 [2022-01-10 07:27:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:49,898 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 656 transitions. [2022-01-10 07:27:49,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-01-10 07:27:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 656 transitions. [2022-01-10 07:27:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 07:27:49,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:49,902 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:49,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:50,123 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 07:27:50,124 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash -904655670, now seen corresponding path program 1 times [2022-01-10 07:27:50,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:50,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143543680] [2022-01-10 07:27:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:50,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:50,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:50,126 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 07:27:50,128 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 07:27:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:51,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:27:51,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-01-10 07:27:52,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:52,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:52,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143543680] [2022-01-10 07:27:52,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143543680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:52,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:52,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:27:52,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252992111] [2022-01-10 07:27:52,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:52,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:27:52,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:27:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:52,067 INFO L87 Difference]: Start difference. First operand 425 states and 656 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 07:27:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:52,926 INFO L93 Difference]: Finished difference Result 1036 states and 1695 transitions. [2022-01-10 07:27:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:27:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 220 [2022-01-10 07:27:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:52,932 INFO L225 Difference]: With dead ends: 1036 [2022-01-10 07:27:52,932 INFO L226 Difference]: Without dead ends: 635 [2022-01-10 07:27:52,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 216 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 07:27:52,937 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 403 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:52,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 543 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 07:27:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-01-10 07:27:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 625. [2022-01-10 07:27:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 430 states have (on average 1.283720930232558) internal successors, (552), 386 states have internal predecessors, (552), 155 states have call successors, (155), 24 states have call predecessors, (155), 39 states have return successors, (268), 214 states have call predecessors, (268), 155 states have call successors, (268) [2022-01-10 07:27:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 975 transitions. [2022-01-10 07:27:52,964 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 975 transitions. Word has length 220 [2022-01-10 07:27:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 975 transitions. [2022-01-10 07:27:52,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 07:27:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 975 transitions. [2022-01-10 07:27:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 07:27:52,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:52,968 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:52,995 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 07:27:53,183 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 07:27:53,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 103491005, now seen corresponding path program 1 times [2022-01-10 07:27:53,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:53,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224546656] [2022-01-10 07:27:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:53,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:53,186 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 07:27:53,223 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 07:27:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:56,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:56,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:56,210 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 07:27:56,267 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 07:27:56,482 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 07:27:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 400 proven. 5 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-01-10 07:27:56,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:56,703 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 07:27:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-01-10 07:27:57,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:57,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224546656] [2022-01-10 07:27:57,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224546656] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:57,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:57,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:27:57,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361662941] [2022-01-10 07:27:57,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:57,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:27:57,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:27:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:57,044 INFO L87 Difference]: Start difference. First operand 625 states and 975 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 07:27:59,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 07:28:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:28:01,236 INFO L93 Difference]: Finished difference Result 1425 states and 2259 transitions. [2022-01-10 07:28:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:28:01,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 221 [2022-01-10 07:28:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:28:01,246 INFO L225 Difference]: With dead ends: 1425 [2022-01-10 07:28:01,247 INFO L226 Difference]: Without dead ends: 1369 [2022-01-10 07:28:01,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 435 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 07:28:01,249 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 580 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 346 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:28:01,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 877 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 613 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-01-10 07:28:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-01-10 07:28:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1329. [2022-01-10 07:28:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 905 states have (on average 1.287292817679558) internal successors, (1165), 806 states have internal predecessors, (1165), 337 states have call successors, (337), 48 states have call predecessors, (337), 86 states have return successors, (624), 474 states have call predecessors, (624), 337 states have call successors, (624) [2022-01-10 07:28:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2126 transitions. [2022-01-10 07:28:01,345 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 2126 transitions. Word has length 221 [2022-01-10 07:28:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:28:01,346 INFO L470 AbstractCegarLoop]: Abstraction has 1329 states and 2126 transitions. [2022-01-10 07:28:01,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 7 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2022-01-10 07:28:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 2126 transitions. [2022-01-10 07:28:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 07:28:01,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:28:01,354 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:28:01,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:28:01,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:28:01,583 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:28:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:28:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 871035319, now seen corresponding path program 1 times [2022-01-10 07:28:01,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:28:01,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775383189] [2022-01-10 07:28:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:28:01,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:28:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:28:01,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:28:01,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:28:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:28:11,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 848 conjunts are in the unsatisfiable core [2022-01-10 07:28:11,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:28:11,880 INFO L353 Elim1Store]: treesize reduction 210, result has 32.9 percent of original size [2022-01-10 07:28:11,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 507 treesize of output 587 [2022-01-10 07:28:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 07:28:13,114 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 64 treesize of output 55 [2022-01-10 07:28:13,187 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 07:28:13,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 23 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 46 [2022-01-10 07:28:14,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 07:28:14,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2022-01-10 07:28:14,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 24 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-01-10 07:28:16,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 24 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 55 [2022-01-10 07:28:16,621 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 13 treesize of output 4 [2022-01-10 07:28:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 07:28:18,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2022-01-10 07:28:18,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 24 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-01-10 07:28:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 07:28:21,671 INFO L353 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-01-10 07:28:21,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 101 [2022-01-10 07:28:21,774 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-10 07:28:21,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 88 [2022-01-10 07:28:22,193 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 9 treesize of output 4 [2022-01-10 07:28:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 07:28:29,618 INFO L353 Elim1Store]: treesize reduction 51, result has 37.0 percent of original size [2022-01-10 07:28:29,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 24 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 130 [2022-01-10 07:28:29,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 117 [2022-01-10 07:28:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver