/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-pthread/cs_queue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 16:55:24,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 16:55:24,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 16:55:24,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 16:55:24,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 16:55:24,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 16:55:24,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 16:55:24,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 16:55:24,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 16:55:24,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 16:55:24,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 16:55:24,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 16:55:24,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 16:55:24,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 16:55:24,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 16:55:24,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 16:55:24,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 16:55:24,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 16:55:24,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 16:55:24,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 16:55:24,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 16:55:24,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 16:55:24,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 16:55:24,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 16:55:24,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 16:55:24,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 16:55:24,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 16:55:24,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 16:55:24,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 16:55:24,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 16:55:24,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 16:55:24,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 16:55:24,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 16:55:24,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 16:55:24,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 16:55:24,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 16:55:24,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 16:55:24,480 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 16:55:24,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 16:55:24,482 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 16:55:24,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 16:55:24,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 16:55:24,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 16:55:24,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 16:55:24,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 16:55:24,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 16:55:24,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 16:55:24,483 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 16:55:24,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 16:55:24,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 16:55:24,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 16:55:24,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 16:55:24,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 16:55:24,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 16:55:24,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 16:55:24,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 16:55:24,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 16:55:24,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 16:55:24,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 16:55:24,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 16:55:24,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 16:55:24,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 16:55:24,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 16:55:24,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 16:55:24,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 16:55:24,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 16:55:24,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 16:55:24,995 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 16:55:24,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_queue-1.i [2022-10-16 16:55:25,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8345d93/58c29f1897e44485bc93042c5a1bb9b6/FLAG5ffa26bdf [2022-10-16 16:55:25,825 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 16:55:25,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_queue-1.i [2022-10-16 16:55:25,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8345d93/58c29f1897e44485bc93042c5a1bb9b6/FLAG5ffa26bdf [2022-10-16 16:55:26,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8345d93/58c29f1897e44485bc93042c5a1bb9b6 [2022-10-16 16:55:26,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 16:55:26,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 16:55:26,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 16:55:26,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 16:55:26,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 16:55:26,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:55:26" (1/1) ... [2022-10-16 16:55:26,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a50ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:26, skipping insertion in model container [2022-10-16 16:55:26,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 04:55:26" (1/1) ... [2022-10-16 16:55:26,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 16:55:26,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 16:55:26,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_queue-1.i[34744,34757] [2022-10-16 16:55:26,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 16:55:26,866 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 16:55:26,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_queue-1.i[34744,34757] [2022-10-16 16:55:27,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 16:55:27,144 INFO L208 MainTranslator]: Completed translation [2022-10-16 16:55:27,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27 WrapperNode [2022-10-16 16:55:27,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 16:55:27,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 16:55:27,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 16:55:27,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 16:55:27,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,320 INFO L138 Inliner]: procedures = 251, calls = 536, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1176 [2022-10-16 16:55:27,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 16:55:27,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 16:55:27,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 16:55:27,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 16:55:27,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 16:55:27,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 16:55:27,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 16:55:27,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 16:55:27,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (1/1) ... [2022-10-16 16:55:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 16:55:27,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:27,511 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) [2022-10-16 16:55:27,534 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 [2022-10-16 16:55:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 16:55:27,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 16:55:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 16:55:27,594 INFO L130 BoogieDeclarations]: Found specification of procedure empty [2022-10-16 16:55:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure empty [2022-10-16 16:55:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-10-16 16:55:27,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-10-16 16:55:27,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 16:55:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 16:55:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 16:55:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-10-16 16:55:27,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-10-16 16:55:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 16:55:27,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-16 16:55:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-16 16:55:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 16:55:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 16:55:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 16:55:27,598 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-10-16 16:55:27,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-10-16 16:55:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-10-16 16:55:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-10-16 16:55:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-16 16:55:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-16 16:55:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-10-16 16:55:27,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-10-16 16:55:27,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 16:55:27,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 16:55:27,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 16:55:27,918 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 16:55:27,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 16:55:28,067 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,067 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,067 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-10-16 16:55:28,067 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-10-16 16:55:28,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093: SUMMARY for call __CS_cs(); srcloc: null [2022-10-16 16:55:28,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093-1: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2022-10-16 16:55:28,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093-1: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,701 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129: SUMMARY for call __CS_cs(); srcloc: null [2022-10-16 16:55:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-10-16 16:55:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1129-1: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2022-10-16 16:55:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,702 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;dequeue_#res#1 := 0; [2022-10-16 16:55:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##89: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2022-10-16 16:55:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,703 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-10-16 16:55:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2022-10-16 16:55:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##149: assume 0 != ~__CS_ret~0 % 256;enqueue_#res#1 := 0; [2022-10-16 16:55:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,704 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##166: assume 0 != ~__CS_ret~0 % 256;t1_#res#1.base, t1_#res#1.offset := 0, 0; [2022-10-16 16:55:28,705 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##167: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:28,705 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume 0 != ~__CS_ret~0 % 256;t2_#res#1.base, t2_#res#1.offset := 0, 0; [2022-10-16 16:55:28,705 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !(0 != ~__CS_ret~0 % 256); [2022-10-16 16:55:33,386 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 16:55:33,398 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 16:55:33,398 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-16 16:55:33,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:55:33 BoogieIcfgContainer [2022-10-16 16:55:33,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 16:55:33,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 16:55:33,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 16:55:33,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 16:55:33,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 04:55:26" (1/3) ... [2022-10-16 16:55:33,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a45795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:55:33, skipping insertion in model container [2022-10-16 16:55:33,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 04:55:27" (2/3) ... [2022-10-16 16:55:33,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a45795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 04:55:33, skipping insertion in model container [2022-10-16 16:55:33,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 04:55:33" (3/3) ... [2022-10-16 16:55:33,411 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_queue-1.i [2022-10-16 16:55:33,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 16:55:33,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-10-16 16:55:33,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 16:55:33,530 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79707c17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 16:55:33,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-16 16:55:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 232 states have (on average 1.5344827586206897) internal successors, (356), 261 states have internal predecessors, (356), 132 states have call successors, (132), 9 states have call predecessors, (132), 9 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-10-16 16:55:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 16:55:33,547 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:33,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 16:55:33,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1519037900, now seen corresponding path program 1 times [2022-10-16 16:55:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085686003] [2022-10-16 16:55:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085686003] [2022-10-16 16:55:34,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085686003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:34,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 16:55:34,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 16:55:34,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409475187] [2022-10-16 16:55:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:34,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 16:55:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 16:55:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 16:55:34,356 INFO L87 Difference]: Start difference. First operand has 402 states, 232 states have (on average 1.5344827586206897) internal successors, (356), 261 states have internal predecessors, (356), 132 states have call successors, (132), 9 states have call predecessors, (132), 9 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:34,655 INFO L93 Difference]: Finished difference Result 807 states and 1382 transitions. [2022-10-16 16:55:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 16:55:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 16:55:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:34,690 INFO L225 Difference]: With dead ends: 807 [2022-10-16 16:55:34,690 INFO L226 Difference]: Without dead ends: 284 [2022-10-16 16:55:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 16:55:34,723 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 13 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:34,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1759 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 16:55:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-10-16 16:55:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2022-10-16 16:55:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 174 states have (on average 1.5977011494252873) internal successors, (278), 195 states have internal predecessors, (278), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 421 transitions. [2022-10-16 16:55:34,819 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 421 transitions. Word has length 6 [2022-10-16 16:55:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:34,820 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 421 transitions. [2022-10-16 16:55:34,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 421 transitions. [2022-10-16 16:55:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 16:55:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:34,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 16:55:34,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1747258168, now seen corresponding path program 1 times [2022-10-16 16:55:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:34,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759733544] [2022-10-16 16:55:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 16:55:35,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759733544] [2022-10-16 16:55:35,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759733544] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:35,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 16:55:35,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 16:55:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901191242] [2022-10-16 16:55:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 16:55:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:35,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 16:55:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 16:55:35,086 INFO L87 Difference]: Start difference. First operand 274 states and 421 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:35,202 INFO L93 Difference]: Finished difference Result 274 states and 421 transitions. [2022-10-16 16:55:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 16:55:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 16:55:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:35,207 INFO L225 Difference]: With dead ends: 274 [2022-10-16 16:55:35,208 INFO L226 Difference]: Without dead ends: 273 [2022-10-16 16:55:35,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 16:55:35,210 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 15 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:35,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1199 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 16:55:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-10-16 16:55:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-10-16 16:55:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 174 states have (on average 1.5919540229885059) internal successors, (277), 194 states have internal predecessors, (277), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 420 transitions. [2022-10-16 16:55:35,247 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 420 transitions. Word has length 10 [2022-10-16 16:55:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:35,247 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 420 transitions. [2022-10-16 16:55:35,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:35,248 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 420 transitions. [2022-10-16 16:55:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 16:55:35,249 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:35,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 16:55:35,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 16:55:35,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:35,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:35,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1669572296, now seen corresponding path program 1 times [2022-10-16 16:55:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:35,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177231000] [2022-10-16 16:55:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177231000] [2022-10-16 16:55:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177231000] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168613649] [2022-10-16 16:55:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:35,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:35,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 16:55:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:35,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 16:55:35,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:35,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 16:55:35,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168613649] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 16:55:35,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 16:55:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124753701] [2022-10-16 16:55:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 16:55:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 16:55:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 16:55:35,923 INFO L87 Difference]: Start difference. First operand 273 states and 420 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:36,165 INFO L93 Difference]: Finished difference Result 297 states and 451 transitions. [2022-10-16 16:55:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 16:55:36,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 16:55:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:36,173 INFO L225 Difference]: With dead ends: 297 [2022-10-16 16:55:36,173 INFO L226 Difference]: Without dead ends: 296 [2022-10-16 16:55:36,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 16:55:36,176 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 35 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1631 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 16:55:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-10-16 16:55:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 269. [2022-10-16 16:55:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 171 states have (on average 1.5964912280701755) internal successors, (273), 190 states have internal predecessors, (273), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 416 transitions. [2022-10-16 16:55:36,238 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 416 transitions. Word has length 11 [2022-10-16 16:55:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:36,239 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 416 transitions. [2022-10-16 16:55:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 416 transitions. [2022-10-16 16:55:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 16:55:36,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:36,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:36,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:36,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:36,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash 215539470, now seen corresponding path program 1 times [2022-10-16 16:55:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:36,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102579456] [2022-10-16 16:55:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:36,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:36,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102579456] [2022-10-16 16:55:36,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102579456] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:36,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508975896] [2022-10-16 16:55:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:36,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:36,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:36,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:36,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 16:55:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:36,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 16:55:36,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:37,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 16:55:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 16:55:37,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508975896] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 16:55:37,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 16:55:37,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-16 16:55:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792468676] [2022-10-16 16:55:37,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 16:55:37,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 16:55:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 16:55:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-16 16:55:37,074 INFO L87 Difference]: Start difference. First operand 269 states and 416 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:37,228 INFO L93 Difference]: Finished difference Result 554 states and 850 transitions. [2022-10-16 16:55:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 16:55:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 16:55:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:37,232 INFO L225 Difference]: With dead ends: 554 [2022-10-16 16:55:37,232 INFO L226 Difference]: Without dead ends: 287 [2022-10-16 16:55:37,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-10-16 16:55:37,237 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 47 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:37,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1222 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 16:55:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-16 16:55:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2022-10-16 16:55:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 179 states have (on average 1.5698324022346368) internal successors, (281), 198 states have internal predecessors, (281), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2022-10-16 16:55:37,260 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 12 [2022-10-16 16:55:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:37,261 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2022-10-16 16:55:37,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2022-10-16 16:55:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 16:55:37,263 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:37,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:37,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 16:55:37,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 139441414, now seen corresponding path program 2 times [2022-10-16 16:55:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:37,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052060617] [2022-10-16 16:55:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 16:55:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:37,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052060617] [2022-10-16 16:55:37,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052060617] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:37,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 16:55:37,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 16:55:37,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680034935] [2022-10-16 16:55:37,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:37,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 16:55:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 16:55:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 16:55:37,669 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:37,758 INFO L93 Difference]: Finished difference Result 287 states and 434 transitions. [2022-10-16 16:55:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 16:55:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 16:55:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:37,761 INFO L225 Difference]: With dead ends: 287 [2022-10-16 16:55:37,762 INFO L226 Difference]: Without dead ends: 285 [2022-10-16 16:55:37,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 16:55:37,763 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 11 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:37,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1204 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 16:55:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-10-16 16:55:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2022-10-16 16:55:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 201 states have internal predecessors, (284), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 427 transitions. [2022-10-16 16:55:37,784 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 427 transitions. Word has length 20 [2022-10-16 16:55:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:37,784 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 427 transitions. [2022-10-16 16:55:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 427 transitions. [2022-10-16 16:55:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 16:55:37,786 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:37,787 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:37,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 16:55:37,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1090405250, now seen corresponding path program 1 times [2022-10-16 16:55:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:37,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520616992] [2022-10-16 16:55:37,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 16:55:37,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:37,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520616992] [2022-10-16 16:55:37,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520616992] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:37,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 16:55:37,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 16:55:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706564676] [2022-10-16 16:55:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 16:55:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 16:55:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 16:55:37,935 INFO L87 Difference]: Start difference. First operand 280 states and 427 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:38,011 INFO L93 Difference]: Finished difference Result 285 states and 432 transitions. [2022-10-16 16:55:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 16:55:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-16 16:55:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:38,015 INFO L225 Difference]: With dead ends: 285 [2022-10-16 16:55:38,015 INFO L226 Difference]: Without dead ends: 284 [2022-10-16 16:55:38,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 16:55:38,017 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 13 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:38,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1199 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 16:55:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-10-16 16:55:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 279. [2022-10-16 16:55:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 182 states have (on average 1.554945054945055) internal successors, (283), 200 states have internal predecessors, (283), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 426 transitions. [2022-10-16 16:55:38,036 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 426 transitions. Word has length 24 [2022-10-16 16:55:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:38,037 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 426 transitions. [2022-10-16 16:55:38,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 426 transitions. [2022-10-16 16:55:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 16:55:38,039 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:38,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:38,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 16:55:38,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash -557174944, now seen corresponding path program 1 times [2022-10-16 16:55:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:38,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899391007] [2022-10-16 16:55:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:38,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899391007] [2022-10-16 16:55:38,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899391007] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307948441] [2022-10-16 16:55:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:38,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:38,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 16:55:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 16:55:38,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:38,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 16:55:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:38,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307948441] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 16:55:38,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 16:55:38,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-10-16 16:55:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893323741] [2022-10-16 16:55:38,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 16:55:38,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 16:55:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 16:55:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-10-16 16:55:38,853 INFO L87 Difference]: Start difference. First operand 279 states and 426 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:39,194 INFO L93 Difference]: Finished difference Result 577 states and 875 transitions. [2022-10-16 16:55:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 16:55:39,195 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-16 16:55:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:39,199 INFO L225 Difference]: With dead ends: 577 [2022-10-16 16:55:39,199 INFO L226 Difference]: Without dead ends: 300 [2022-10-16 16:55:39,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2022-10-16 16:55:39,208 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 63 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:39,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 2785 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 16:55:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-10-16 16:55:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2022-10-16 16:55:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 198 states have (on average 1.5101010101010102) internal successors, (299), 216 states have internal predecessors, (299), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 442 transitions. [2022-10-16 16:55:39,235 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 442 transitions. Word has length 25 [2022-10-16 16:55:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:39,236 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 442 transitions. [2022-10-16 16:55:39,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 442 transitions. [2022-10-16 16:55:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 16:55:39,240 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:39,241 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:39,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:39,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:39,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:39,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1966218896, now seen corresponding path program 2 times [2022-10-16 16:55:39,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:39,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877986426] [2022-10-16 16:55:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877986426] [2022-10-16 16:55:40,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877986426] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:40,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79568972] [2022-10-16 16:55:40,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 16:55:40,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:40,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:40,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 16:55:41,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 16:55:41,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 16:55:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 16:55:41,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:41,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 16:55:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:41,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79568972] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 16:55:41,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 16:55:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-10-16 16:55:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145323045] [2022-10-16 16:55:41,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 16:55:41,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 16:55:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:41,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 16:55:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 16:55:41,697 INFO L87 Difference]: Start difference. First operand 295 states and 442 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:42,291 INFO L93 Difference]: Finished difference Result 625 states and 927 transitions. [2022-10-16 16:55:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-16 16:55:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-10-16 16:55:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:42,297 INFO L225 Difference]: With dead ends: 625 [2022-10-16 16:55:42,297 INFO L226 Difference]: Without dead ends: 332 [2022-10-16 16:55:42,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 16:55:42,302 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 116 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:42,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 3177 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 16:55:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-10-16 16:55:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 327. [2022-10-16 16:55:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 230 states have (on average 1.4391304347826086) internal successors, (331), 248 states have internal predecessors, (331), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 474 transitions. [2022-10-16 16:55:42,327 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 474 transitions. Word has length 41 [2022-10-16 16:55:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:42,330 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 474 transitions. [2022-10-16 16:55:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 474 transitions. [2022-10-16 16:55:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 16:55:42,338 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:42,338 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:42,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:42,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1241324144, now seen corresponding path program 3 times [2022-10-16 16:55:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:42,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013286257] [2022-10-16 16:55:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 16:55:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:44,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013286257] [2022-10-16 16:55:44,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013286257] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508452105] [2022-10-16 16:55:44,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 16:55:44,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:44,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:44,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 16:55:45,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 16:55:45,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 16:55:45,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 16:55:45,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-10-16 16:55:45,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 16:55:45,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508452105] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 16:55:45,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 16:55:45,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [33] total 35 [2022-10-16 16:55:45,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448345187] [2022-10-16 16:55:45,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 16:55:45,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 16:55:45,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:45,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 16:55:45,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 16:55:45,483 INFO L87 Difference]: Start difference. First operand 327 states and 474 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:45,572 INFO L93 Difference]: Finished difference Result 341 states and 495 transitions. [2022-10-16 16:55:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 16:55:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-10-16 16:55:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:45,577 INFO L225 Difference]: With dead ends: 341 [2022-10-16 16:55:45,577 INFO L226 Difference]: Without dead ends: 340 [2022-10-16 16:55:45,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 16:55:45,579 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 33 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:45,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1229 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 16:55:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-10-16 16:55:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 323. [2022-10-16 16:55:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 227 states have (on average 1.4405286343612336) internal successors, (327), 244 states have internal predecessors, (327), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 470 transitions. [2022-10-16 16:55:45,600 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 470 transitions. Word has length 73 [2022-10-16 16:55:45,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:45,600 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 470 transitions. [2022-10-16 16:55:45,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 470 transitions. [2022-10-16 16:55:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 16:55:45,603 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:45,604 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:45,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:45,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:45,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash 172063064, now seen corresponding path program 1 times [2022-10-16 16:55:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:45,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352327111] [2022-10-16 16:55:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 16:55:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2022-10-16 16:55:46,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 16:55:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352327111] [2022-10-16 16:55:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352327111] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 16:55:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329248499] [2022-10-16 16:55:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 16:55:46,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 16:55:46,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 16:55:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 16:55:46,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-16 16:55:46,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 16:55:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 16:55:47,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 16:55:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 16:55:48,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329248499] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 16:55:48,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 16:55:48,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 33, 33] total 43 [2022-10-16 16:55:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150675228] [2022-10-16 16:55:48,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 16:55:48,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 16:55:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 16:55:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 16:55:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=1342, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 16:55:48,211 INFO L87 Difference]: Start difference. First operand 323 states and 470 transitions. Second operand has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 16:55:49,139 INFO L93 Difference]: Finished difference Result 676 states and 976 transitions. [2022-10-16 16:55:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 16:55:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-10-16 16:55:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 16:55:49,144 INFO L225 Difference]: With dead ends: 676 [2022-10-16 16:55:49,144 INFO L226 Difference]: Without dead ends: 355 [2022-10-16 16:55:49,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 87 SyntacticMatches, 23 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1097, Invalid=2809, Unknown=0, NotChecked=0, Total=3906 [2022-10-16 16:55:49,150 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 150 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 16:55:49,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 5169 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 16:55:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-10-16 16:55:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 347. [2022-10-16 16:55:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 251 states have (on average 1.3984063745019921) internal successors, (351), 268 states have internal predecessors, (351), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-10-16 16:55:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 494 transitions. [2022-10-16 16:55:49,174 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 494 transitions. Word has length 74 [2022-10-16 16:55:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 16:55:49,176 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 494 transitions. [2022-10-16 16:55:49,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 43 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 16:55:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 494 transitions. [2022-10-16 16:55:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-16 16:55:49,180 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 16:55:49,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 16:55:49,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 16:55:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 16:55:49,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~$Pointer$Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [__CS_pthread_mutex_lockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __CS_pthread_mutex_lockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 16:55:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 16:55:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -624331146, now seen corresponding path program 1 times [2022-10-16 16:55:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 16:55:49,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437261850] [2022-10-16 16:55:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 16:55:49,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms