/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:12:52,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:12:52,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:12:52,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 16:12:52,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 16:12:52,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 16:12:52,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 16:12:52,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 16:12:52,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 16:12:52,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 16:12:52,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 16:12:52,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 16:12:52,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:12:52,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:12:52,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:12:52,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:12:52,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:12:52,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:12:52,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:12:52,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:12:52,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:12:52,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:12:52,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:12:52,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:12:52,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:12:52,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:12:52,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:12:52,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:12:52,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:12:52,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:12:52,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:12:52,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:12:52,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:12:52,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:12:52,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:12:52,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:12:52,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 16:12:52,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:12:52,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:12:52,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:12:52,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:12:52,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:12:52,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:12:52,408 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:12:52,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:12:52,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:12:52,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:12:52,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:12:52,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:12:52,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:12:52,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:12:52,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:12:52,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:12:52,412 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:12:52,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:12:52,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:12:52,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:12:52,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:12:52,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:12:52,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:12:52,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:12:52,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:12:52,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:12:52,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:12:52,415 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:12:52,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:12:52,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:12:52,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:12:52,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:12:52,878 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:12:52,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-10-08 16:12:52,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3d58a5b/1062e03c017646a58f8fb102e25d32ee/FLAGf398ee857 [2021-10-08 16:12:53,542 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:12:53,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2021-10-08 16:12:53,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3d58a5b/1062e03c017646a58f8fb102e25d32ee/FLAGf398ee857 [2021-10-08 16:12:53,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c3d58a5b/1062e03c017646a58f8fb102e25d32ee [2021-10-08 16:12:53,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:12:53,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:12:53,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:12:53,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:12:53,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:12:53,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:12:53" (1/1) ... [2021-10-08 16:12:53,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fddc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:53, skipping insertion in model container [2021-10-08 16:12:53,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:12:53" (1/1) ... [2021-10-08 16:12:53,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:12:53,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:12:54,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2418,2431] [2021-10-08 16:12:54,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:12:54,255 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:12:54,307 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2418,2431] [2021-10-08 16:12:54,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:12:54,339 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:12:54,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54 WrapperNode [2021-10-08 16:12:54,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:12:54,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:12:54,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:12:54,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:12:54,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:12:54,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:12:54,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:12:54,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:12:54,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:12:54,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:12:54,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:12:54,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:12:54,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (1/1) ... [2021-10-08 16:12:54,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:12:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:54,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:12:54,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:12:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:12:54,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:12:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:12:54,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:12:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:12:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:12:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:12:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:12:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:12:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:12:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:12:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:12:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:12:54,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:12:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:12:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:12:54,635 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:12:55,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:12:55,220 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-08 16:12:55,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:55 BoogieIcfgContainer [2021-10-08 16:12:55,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:12:55,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:12:55,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:12:55,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:12:55,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:12:53" (1/3) ... [2021-10-08 16:12:55,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d800ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:12:55, skipping insertion in model container [2021-10-08 16:12:55,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:12:54" (2/3) ... [2021-10-08 16:12:55,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d800ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:12:55, skipping insertion in model container [2021-10-08 16:12:55,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:55" (3/3) ... [2021-10-08 16:12:55,232 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2021-10-08 16:12:55,238 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:12:55,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:12:55,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-08 16:12:55,238 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:12:55,287 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,289 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,290 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,290 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,290 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,290 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,291 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,291 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,291 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,291 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,291 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,292 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,292 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,292 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,293 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,298 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,298 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,299 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,299 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,299 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,299 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,299 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,300 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,301 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,301 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,302 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,302 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,303 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,303 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,304 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,304 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,305 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,306 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,306 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,307 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,308 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,309 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,310 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,310 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,310 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,310 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,310 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,311 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,312 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,312 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,313 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,314 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,315 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,317 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,317 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,318 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,329 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,329 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,339 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,340 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,340 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,340 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,342 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,342 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,343 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:12:55,351 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:12:55,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:12:55,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:12:55,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-08 16:12:55,433 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:12:55,445 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 146 transitions, 316 flow [2021-10-08 16:12:55,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 146 transitions, 316 flow [2021-10-08 16:12:55,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 146 transitions, 316 flow [2021-10-08 16:12:55,541 INFO L129 PetriNetUnfolder]: 10/143 cut-off events. [2021-10-08 16:12:55,542 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:12:55,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 10/143 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2021-10-08 16:12:55,555 INFO L116 LiptonReduction]: Number of co-enabled transitions 1370 [2021-10-08 16:13:02,317 INFO L131 LiptonReduction]: Checked pairs total: 1980 [2021-10-08 16:13:02,318 INFO L133 LiptonReduction]: Total number of compositions: 150 [2021-10-08 16:13:02,327 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 86 flow [2021-10-08 16:13:02,351 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 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) [2021-10-08 16:13:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 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) [2021-10-08 16:13:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:13:02,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:02,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:13:02,363 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash 18769, now seen corresponding path program 1 times [2021-10-08 16:13:02,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:02,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272353351] [2021-10-08 16:13:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:02,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:02,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:02,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272353351] [2021-10-08 16:13:02,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272353351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:02,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:02,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:02,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210773298] [2021-10-08 16:13:02,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:02,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:02,661 INFO L87 Difference]: Start difference. First operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-08 16:13:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:02,714 INFO L93 Difference]: Finished difference Result 351 states and 1003 transitions. [2021-10-08 16:13:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-08 16:13:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:02,734 INFO L225 Difference]: With dead ends: 351 [2021-10-08 16:13:02,734 INFO L226 Difference]: Without dead ends: 347 [2021-10-08 16:13:02,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:02,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-08 16:13:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 176. [2021-10-08 16:13:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 166 states have (on average 3.0120481927710845) internal successors, (500), 175 states have internal predecessors, (500), 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) [2021-10-08 16:13:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 500 transitions. [2021-10-08 16:13:02,798 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 500 transitions. Word has length 2 [2021-10-08 16:13:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:02,798 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 500 transitions. [2021-10-08 16:13:02,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-08 16:13:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 500 transitions. [2021-10-08 16:13:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:13:02,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:02,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:13:02,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:13:02,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash 582597, now seen corresponding path program 1 times [2021-10-08 16:13:02,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:02,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690089080] [2021-10-08 16:13:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:02,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:02,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:02,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690089080] [2021-10-08 16:13:02,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690089080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:02,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311296797] [2021-10-08 16:13:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:02,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:02,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:02,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:13:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:02,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311296797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:03,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:03,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:13:03,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101922911] [2021-10-08 16:13:03,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:03,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:03,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:03,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:03,041 INFO L87 Difference]: Start difference. First operand 176 states and 500 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-08 16:13:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:03,107 INFO L93 Difference]: Finished difference Result 519 states and 1489 transitions. [2021-10-08 16:13:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:13:03,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-10-08 16:13:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:03,120 INFO L225 Difference]: With dead ends: 519 [2021-10-08 16:13:03,121 INFO L226 Difference]: Without dead ends: 519 [2021-10-08 16:13:03,121 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-10-08 16:13:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 177. [2021-10-08 16:13:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 167 states have (on average 3.0119760479041915) internal successors, (503), 176 states have internal predecessors, (503), 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) [2021-10-08 16:13:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 503 transitions. [2021-10-08 16:13:03,161 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 503 transitions. Word has length 3 [2021-10-08 16:13:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:03,162 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 503 transitions. [2021-10-08 16:13:03,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-08 16:13:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 503 transitions. [2021-10-08 16:13:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:13:03,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:03,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:13:03,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 16:13:03,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:03,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash 582598, now seen corresponding path program 1 times [2021-10-08 16:13:03,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:03,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114115324] [2021-10-08 16:13:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:03,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:03,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:03,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114115324] [2021-10-08 16:13:03,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114115324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:03,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:03,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:03,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751660308] [2021-10-08 16:13:03,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:03,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:03,413 INFO L87 Difference]: Start difference. First operand 177 states and 503 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-08 16:13:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:03,424 INFO L93 Difference]: Finished difference Result 176 states and 501 transitions. [2021-10-08 16:13:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-08 16:13:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:03,427 INFO L225 Difference]: With dead ends: 176 [2021-10-08 16:13:03,427 INFO L226 Difference]: Without dead ends: 176 [2021-10-08 16:13:03,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-08 16:13:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-10-08 16:13:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 167 states have (on average 3.0) internal successors, (501), 175 states have internal predecessors, (501), 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) [2021-10-08 16:13:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 501 transitions. [2021-10-08 16:13:03,463 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 501 transitions. Word has length 3 [2021-10-08 16:13:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:03,463 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 501 transitions. [2021-10-08 16:13:03,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-08 16:13:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 501 transitions. [2021-10-08 16:13:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:13:03,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:03,464 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:13:03,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:13:03,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash 18061265, now seen corresponding path program 2 times [2021-10-08 16:13:03,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:03,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480359697] [2021-10-08 16:13:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:03,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:03,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:03,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480359697] [2021-10-08 16:13:03,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480359697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:03,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785328655] [2021-10-08 16:13:03,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:03,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:03,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:03,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:03,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:13:03,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:03,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:03,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:13:03,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785328655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:03,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:03,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:13:03,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079609797] [2021-10-08 16:13:03,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:03,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:03,615 INFO L87 Difference]: Start difference. First operand 176 states and 501 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-08 16:13:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:03,621 INFO L93 Difference]: Finished difference Result 175 states and 500 transitions. [2021-10-08 16:13:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:03,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 4 [2021-10-08 16:13:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:03,624 INFO L225 Difference]: With dead ends: 175 [2021-10-08 16:13:03,624 INFO L226 Difference]: Without dead ends: 175 [2021-10-08 16:13:03,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-08 16:13:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-10-08 16:13:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 165 states have (on average 3.006060606060606) internal successors, (496), 172 states have internal predecessors, (496), 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) [2021-10-08 16:13:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 496 transitions. [2021-10-08 16:13:03,635 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 496 transitions. Word has length 4 [2021-10-08 16:13:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:03,635 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 496 transitions. [2021-10-08 16:13:03,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-08 16:13:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 496 transitions. [2021-10-08 16:13:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:03,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:03,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:13:03,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:03,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:03,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash 559932810, now seen corresponding path program 1 times [2021-10-08 16:13:03,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:03,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041329722] [2021-10-08 16:13:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:03,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:03,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:03,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041329722] [2021-10-08 16:13:03,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041329722] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:03,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:03,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:03,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788727516] [2021-10-08 16:13:03,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:03,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:03,896 INFO L87 Difference]: Start difference. First operand 173 states and 496 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-08 16:13:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:03,916 INFO L93 Difference]: Finished difference Result 247 states and 706 transitions. [2021-10-08 16:13:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-08 16:13:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:03,920 INFO L225 Difference]: With dead ends: 247 [2021-10-08 16:13:03,920 INFO L226 Difference]: Without dead ends: 247 [2021-10-08 16:13:03,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-08 16:13:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 205. [2021-10-08 16:13:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 3.1269035532994924) internal successors, (616), 204 states have internal predecessors, (616), 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) [2021-10-08 16:13:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 616 transitions. [2021-10-08 16:13:03,939 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 616 transitions. Word has length 5 [2021-10-08 16:13:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:03,939 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 616 transitions. [2021-10-08 16:13:03,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-08 16:13:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 616 transitions. [2021-10-08 16:13:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:13:03,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:03,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:13:03,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 16:13:03,941 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash 178049219, now seen corresponding path program 1 times [2021-10-08 16:13:03,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:03,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670982121] [2021-10-08 16:13:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:03,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:04,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:04,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670982121] [2021-10-08 16:13:04,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670982121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:04,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:04,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:04,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352198524] [2021-10-08 16:13:04,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:04,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:04,028 INFO L87 Difference]: Start difference. First operand 205 states and 616 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-10-08 16:13:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:04,043 INFO L93 Difference]: Finished difference Result 173 states and 522 transitions. [2021-10-08 16:13:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-10-08 16:13:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:04,046 INFO L225 Difference]: With dead ends: 173 [2021-10-08 16:13:04,046 INFO L226 Difference]: Without dead ends: 173 [2021-10-08 16:13:04,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-08 16:13:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-08 16:13:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 3.107142857142857) internal successors, (522), 172 states have internal predecessors, (522), 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) [2021-10-08 16:13:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 522 transitions. [2021-10-08 16:13:04,054 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 522 transitions. Word has length 6 [2021-10-08 16:13:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:04,056 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 522 transitions. [2021-10-08 16:13:04,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-10-08 16:13:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 522 transitions. [2021-10-08 16:13:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:13:04,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:04,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:13:04,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 16:13:04,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash 178049187, now seen corresponding path program 1 times [2021-10-08 16:13:04,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:04,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226464342] [2021-10-08 16:13:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:04,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:04,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:04,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226464342] [2021-10-08 16:13:04,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226464342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:04,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073859300] [2021-10-08 16:13:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:04,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:04,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:04,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:04,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:13:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:04,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:13:04,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:04,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073859300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:04,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:04,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2021-10-08 16:13:04,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496349854] [2021-10-08 16:13:04,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:04,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:04,242 INFO L87 Difference]: Start difference. First operand 173 states and 522 transitions. Second operand has 5 states, 5 states have (on average 1.2) 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) [2021-10-08 16:13:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:04,270 INFO L93 Difference]: Finished difference Result 174 states and 523 transitions. [2021-10-08 16:13:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) 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 [2021-10-08 16:13:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:04,272 INFO L225 Difference]: With dead ends: 174 [2021-10-08 16:13:04,273 INFO L226 Difference]: Without dead ends: 174 [2021-10-08 16:13:04,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-08 16:13:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-10-08 16:13:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 3.094674556213018) internal successors, (523), 173 states have internal predecessors, (523), 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) [2021-10-08 16:13:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 523 transitions. [2021-10-08 16:13:04,280 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 523 transitions. Word has length 6 [2021-10-08 16:13:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:04,281 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 523 transitions. [2021-10-08 16:13:04,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) 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) [2021-10-08 16:13:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 523 transitions. [2021-10-08 16:13:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:13:04,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:04,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:04,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:04,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:04,498 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:04,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1194004759, now seen corresponding path program 1 times [2021-10-08 16:13:04,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:04,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051349113] [2021-10-08 16:13:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:04,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:13:04,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:04,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051349113] [2021-10-08 16:13:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051349113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:04,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511915807] [2021-10-08 16:13:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:04,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:04,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:04,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:13:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:04,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:13:04,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:04,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511915807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:04,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:04,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 8 [2021-10-08 16:13:04,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747178710] [2021-10-08 16:13:04,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:13:04,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:13:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:13:04,685 INFO L87 Difference]: Start difference. First operand 174 states and 523 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 16:13:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:04,850 INFO L93 Difference]: Finished difference Result 434 states and 1184 transitions. [2021-10-08 16:13:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:13:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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 7 [2021-10-08 16:13:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:04,854 INFO L225 Difference]: With dead ends: 434 [2021-10-08 16:13:04,855 INFO L226 Difference]: Without dead ends: 416 [2021-10-08 16:13:04,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:13:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-08 16:13:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 290. [2021-10-08 16:13:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 3.143859649122807) internal successors, (896), 289 states have internal predecessors, (896), 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) [2021-10-08 16:13:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 896 transitions. [2021-10-08 16:13:04,869 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 896 transitions. Word has length 7 [2021-10-08 16:13:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:04,869 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 896 transitions. [2021-10-08 16:13:04,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-08 16:13:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 896 transitions. [2021-10-08 16:13:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:13:04,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:04,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:04,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:05,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:05,084 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:05,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1636017225, now seen corresponding path program 1 times [2021-10-08 16:13:05,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:05,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105140782] [2021-10-08 16:13:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:05,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:13:05,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:05,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105140782] [2021-10-08 16:13:05,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105140782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:05,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:05,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:05,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005527198] [2021-10-08 16:13:05,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:05,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:05,118 INFO L87 Difference]: Start difference. First operand 290 states and 896 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-08 16:13:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:05,132 INFO L93 Difference]: Finished difference Result 388 states and 1198 transitions. [2021-10-08 16:13:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-08 16:13:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:05,136 INFO L225 Difference]: With dead ends: 388 [2021-10-08 16:13:05,136 INFO L226 Difference]: Without dead ends: 388 [2021-10-08 16:13:05,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-08 16:13:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 358. [2021-10-08 16:13:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 353 states have (on average 3.223796033994334) internal successors, (1138), 357 states have internal predecessors, (1138), 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) [2021-10-08 16:13:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1138 transitions. [2021-10-08 16:13:05,152 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1138 transitions. Word has length 8 [2021-10-08 16:13:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:05,152 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1138 transitions. [2021-10-08 16:13:05,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-08 16:13:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1138 transitions. [2021-10-08 16:13:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:13:05,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:05,153 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-08 16:13:05,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:13:05,154 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash -264827382, now seen corresponding path program 2 times [2021-10-08 16:13:05,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:05,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477466755] [2021-10-08 16:13:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:05,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:05,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477466755] [2021-10-08 16:13:05,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477466755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259449391] [2021-10-08 16:13:05,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:05,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:05,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:05,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:13:05,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:05,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:05,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:05,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:13:05,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259449391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:05,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:05,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-08 16:13:05,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073488444] [2021-10-08 16:13:05,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:05,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:05,318 INFO L87 Difference]: Start difference. First operand 358 states and 1138 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-08 16:13:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:05,331 INFO L93 Difference]: Finished difference Result 286 states and 908 transitions. [2021-10-08 16:13:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 9 [2021-10-08 16:13:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:05,334 INFO L225 Difference]: With dead ends: 286 [2021-10-08 16:13:05,335 INFO L226 Difference]: Without dead ends: 262 [2021-10-08 16:13:05,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-08 16:13:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 178. [2021-10-08 16:13:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.994350282485876) internal successors, (530), 177 states have internal predecessors, (530), 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) [2021-10-08 16:13:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 530 transitions. [2021-10-08 16:13:05,345 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 530 transitions. Word has length 9 [2021-10-08 16:13:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:05,346 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 530 transitions. [2021-10-08 16:13:05,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-08 16:13:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 530 transitions. [2021-10-08 16:13:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:13:05,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:05,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:05,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:05,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:05,562 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2021-10-08 16:13:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:05,564 INFO L82 PathProgramCache]: Analyzing trace with hash 823074134, now seen corresponding path program 1 times [2021-10-08 16:13:05,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:05,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305334358] [2021-10-08 16:13:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:05,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:13:05,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:05,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305334358] [2021-10-08 16:13:05,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305334358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:05,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:05,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:05,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292540988] [2021-10-08 16:13:05,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:05,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:05,599 INFO L87 Difference]: Start difference. First operand 178 states and 530 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-08 16:13:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:05,606 INFO L93 Difference]: Finished difference Result 138 states and 406 transitions. [2021-10-08 16:13:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:05,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-08 16:13:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:05,609 INFO L225 Difference]: With dead ends: 138 [2021-10-08 16:13:05,609 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 16:13:05,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 16:13:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 16:13:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-08 16:13:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 16:13:05,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-08 16:13:05,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:05,613 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 16:13:05,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-08 16:13:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 16:13:05,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 16:13:05,617 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,618 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,618 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,618 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:13:05,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:13:05,619 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:13:05,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:13:05,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:13:05,628 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:13:05,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:13:05,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:13:05 BasicIcfg [2021-10-08 16:13:05,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:13:05,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 16:13:05,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 16:13:05,633 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 16:13:05,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:12:55" (3/4) ... [2021-10-08 16:13:05,636 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 16:13:05,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 16:13:05,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 16:13:05,642 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 16:13:05,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-08 16:13:05,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 16:13:05,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:13:05,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:13:05,720 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-more-min-le-max.wvr.c-witness.graphml [2021-10-08 16:13:05,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 16:13:05,722 INFO L168 Benchmark]: Toolchain (without parser) took 11797.88 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 132.0 MB in the beginning and 186.0 MB in the end (delta: -54.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,723 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:13:05,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.50 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 120.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.59 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,725 INFO L168 Benchmark]: Boogie Preprocessor took 70.65 ms. Allocated memory is still 157.3 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,726 INFO L168 Benchmark]: RCFGBuilder took 722.79 ms. Allocated memory is still 157.3 MB. Free memory was 117.3 MB in the beginning and 136.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,726 INFO L168 Benchmark]: TraceAbstraction took 10406.39 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 136.2 MB in the beginning and 189.2 MB in the end (delta: -53.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,727 INFO L168 Benchmark]: Witness Printer took 88.14 ms. Allocated memory is still 226.5 MB. Free memory was 189.2 MB in the beginning and 186.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:13:05,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.50 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 120.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.59 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 119.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.65 ms. Allocated memory is still 157.3 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 722.79 ms. Allocated memory is still 157.3 MB. Free memory was 117.3 MB in the beginning and 136.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10406.39 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 136.2 MB in the beginning and 189.2 MB in the end (delta: -53.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * Witness Printer took 88.14 ms. Allocated memory is still 226.5 MB. Free memory was 189.2 MB in the beginning and 186.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6864.5ms, 146 PlacesBefore, 38 PlacesAfterwards, 146 TransitionsBefore, 31 TransitionsAfterwards, 1370 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 150 TotalNumberOfCompositions, 1980 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1509, positive: 1466, positive conditional: 0, positive unconditional: 1466, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 920, positive: 906, positive conditional: 0, positive unconditional: 906, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 920, positive: 906, positive conditional: 0, positive unconditional: 906, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1509, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 920, unknown conditional: 0, unknown unconditional: 920] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 106]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 106]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 170 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 10225.1ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 17.2ms, AutomataDifference: 498.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6941.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 261 SDtfs, 309 SDslu, 289 SDs, 0 SdLazy, 170 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 139.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 206.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 67.2ms SsaConstructionTime, 292.0ms SatisfiabilityAnalysisTime, 634.9ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 8 NumberOfNonLiveVariables, 479 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 20/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 16:13:05,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...