/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 15:49:15,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 15:49:15,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 15:49:15,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 15:49:15,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 15:49:15,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 15:49:15,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 15:49:15,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 15:49:15,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 15:49:15,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 15:49:15,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 15:49:15,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 15:49:15,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 15:49:15,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 15:49:15,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 15:49:15,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 15:49:15,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 15:49:15,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 15:49:15,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 15:49:15,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 15:49:15,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 15:49:15,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 15:49:15,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 15:49:15,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 15:49:15,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 15:49:15,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 15:49:15,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 15:49:15,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 15:49:15,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 15:49:15,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 15:49:15,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 15:49:15,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 15:49:15,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 15:49:15,936 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 15:49:15,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 15:49:15,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 15:49:15,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 15:49:15,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 15:49:15,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 15:49:15,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 15:49:15,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 15:49:15,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 15:49:15,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 15:49:15,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 15:49:15,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 15:49:15,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 15:49:15,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 15:49:15,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 15:49:15,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 15:49:15,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 15:49:15,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 15:49:15,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 15:49:15,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 15:49:15,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 15:49:15,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 15:49:15,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 15:49:15,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 15:49:15,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 15:49:15,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 15:49:16,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 15:49:16,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 15:49:16,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 15:49:16,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 15:49:16,463 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 15:49:16,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-11-11 15:49:16,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c113ef/57def908167548a19c9d631c0e2cb63e/FLAGe66e5797e [2020-11-11 15:49:17,184 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 15:49:17,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-11-11 15:49:17,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c113ef/57def908167548a19c9d631c0e2cb63e/FLAGe66e5797e [2020-11-11 15:49:17,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c113ef/57def908167548a19c9d631c0e2cb63e [2020-11-11 15:49:17,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 15:49:17,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 15:49:17,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 15:49:17,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 15:49:17,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 15:49:17,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:49:17" (1/1) ... [2020-11-11 15:49:17,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49595d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:17, skipping insertion in model container [2020-11-11 15:49:17,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:49:17" (1/1) ... [2020-11-11 15:49:17,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 15:49:17,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 15:49:17,897 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-11 15:49:18,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 15:49:18,157 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 15:49:18,187 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-11 15:49:18,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 15:49:18,345 INFO L208 MainTranslator]: Completed translation [2020-11-11 15:49:18,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18 WrapperNode [2020-11-11 15:49:18,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 15:49:18,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 15:49:18,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 15:49:18,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 15:49:18,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 15:49:18,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 15:49:18,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 15:49:18,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 15:49:18,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... [2020-11-11 15:49:18,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 15:49:18,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 15:49:18,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 15:49:18,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 15:49:18,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 15:49:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-11 15:49:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-11 15:49:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 15:49:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 15:49:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 15:49:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 15:49:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 15:49:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 15:49:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 15:49:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 15:49:18,555 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 15:49:18,896 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 15:49:18,897 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-11 15:49:18,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:49:18 BoogieIcfgContainer [2020-11-11 15:49:18,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 15:49:18,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 15:49:18,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 15:49:18,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 15:49:18,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:49:17" (1/3) ... [2020-11-11 15:49:18,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759085ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:49:18, skipping insertion in model container [2020-11-11 15:49:18,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:49:18" (2/3) ... [2020-11-11 15:49:18,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759085ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:49:18, skipping insertion in model container [2020-11-11 15:49:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:49:18" (3/3) ... [2020-11-11 15:49:18,907 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-11-11 15:49:18,927 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 15:49:18,927 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 15:49:18,930 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-11 15:49:18,932 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 15:49:18,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 15:49:18,993 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 15:49:19,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 15:49:19,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 15:49:19,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 15:49:19,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 15:49:19,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 15:49:19,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 15:49:19,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 15:49:19,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 15:49:19,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 15:49:19,044 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 69 transitions, 143 flow [2020-11-11 15:49:19,090 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 520 states, 516 states have (on average 2.251937984496124) internal successors, (1162), 519 states have internal predecessors, (1162), 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) [2020-11-11 15:49:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 516 states have (on average 2.251937984496124) internal successors, (1162), 519 states have internal predecessors, (1162), 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) [2020-11-11 15:49:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-11 15:49:19,108 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 15:49:19,109 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 15:49:19,110 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 15:49:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 15:49:19,116 INFO L82 PathProgramCache]: Analyzing trace with hash 619413298, now seen corresponding path program 1 times [2020-11-11 15:49:19,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 15:49:19,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793729885] [2020-11-11 15:49:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 15:49:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 15:49:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 15:49:19,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793729885] [2020-11-11 15:49:19,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 15:49:19,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 15:49:19,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349756335] [2020-11-11 15:49:19,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 15:49:19,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 15:49:19,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 15:49:19,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 15:49:19,409 INFO L87 Difference]: Start difference. First operand has 520 states, 516 states have (on average 2.251937984496124) internal successors, (1162), 519 states have internal predecessors, (1162), 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 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2020-11-11 15:49:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 15:49:19,445 INFO L93 Difference]: Finished difference Result 432 states and 848 transitions. [2020-11-11 15:49:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 15:49:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2020-11-11 15:49:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 15:49:19,464 INFO L225 Difference]: With dead ends: 432 [2020-11-11 15:49:19,465 INFO L226 Difference]: Without dead ends: 392 [2020-11-11 15:49:19,466 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 15:49:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-11-11 15:49:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2020-11-11 15:49:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 389 states have (on average 1.974293059125964) internal successors, (768), 391 states have internal predecessors, (768), 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) [2020-11-11 15:49:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 768 transitions. [2020-11-11 15:49:19,553 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 768 transitions. Word has length 27 [2020-11-11 15:49:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 15:49:19,554 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 768 transitions. [2020-11-11 15:49:19,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2020-11-11 15:49:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 768 transitions. [2020-11-11 15:49:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-11 15:49:19,556 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 15:49:19,557 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 15:49:19,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 15:49:19,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 15:49:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 15:49:19,558 INFO L82 PathProgramCache]: Analyzing trace with hash 648042449, now seen corresponding path program 1 times [2020-11-11 15:49:19,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 15:49:19,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703922899] [2020-11-11 15:49:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 15:49:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 15:49:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 15:49:19,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703922899] [2020-11-11 15:49:19,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 15:49:19,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 15:49:19,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303870138] [2020-11-11 15:49:19,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 15:49:19,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 15:49:19,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 15:49:19,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 15:49:19,663 INFO L87 Difference]: Start difference. First operand 392 states and 768 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2020-11-11 15:49:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 15:49:19,713 INFO L93 Difference]: Finished difference Result 383 states and 725 transitions. [2020-11-11 15:49:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 15:49:19,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2020-11-11 15:49:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 15:49:19,716 INFO L225 Difference]: With dead ends: 383 [2020-11-11 15:49:19,717 INFO L226 Difference]: Without dead ends: 303 [2020-11-11 15:49:19,717 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 15:49:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-11-11 15:49:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 283. [2020-11-11 15:49:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 280 states have (on average 1.9107142857142858) internal successors, (535), 282 states have internal predecessors, (535), 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) [2020-11-11 15:49:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 535 transitions. [2020-11-11 15:49:19,744 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 535 transitions. Word has length 27 [2020-11-11 15:49:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 15:49:19,745 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 535 transitions. [2020-11-11 15:49:19,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2020-11-11 15:49:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 535 transitions. [2020-11-11 15:49:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-11 15:49:19,747 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 15:49:19,747 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 15:49:19,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 15:49:19,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 15:49:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 15:49:19,749 INFO L82 PathProgramCache]: Analyzing trace with hash -812341028, now seen corresponding path program 1 times [2020-11-11 15:49:19,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 15:49:19,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289556807] [2020-11-11 15:49:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 15:49:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 15:49:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 15:49:19,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289556807] [2020-11-11 15:49:19,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 15:49:19,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 15:49:19,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132373197] [2020-11-11 15:49:19,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 15:49:19,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 15:49:19,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 15:49:19,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 15:49:19,872 INFO L87 Difference]: Start difference. First operand 283 states and 535 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2020-11-11 15:49:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 15:49:19,895 INFO L93 Difference]: Finished difference Result 239 states and 437 transitions. [2020-11-11 15:49:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 15:49:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2020-11-11 15:49:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 15:49:19,898 INFO L225 Difference]: With dead ends: 239 [2020-11-11 15:49:19,898 INFO L226 Difference]: Without dead ends: 191 [2020-11-11 15:49:19,899 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 15:49:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-11 15:49:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-11-11 15:49:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.8095238095238095) internal successors, (342), 190 states have internal predecessors, (342), 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) [2020-11-11 15:49:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 342 transitions. [2020-11-11 15:49:19,913 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 342 transitions. Word has length 31 [2020-11-11 15:49:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 15:49:19,914 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 342 transitions. [2020-11-11 15:49:19,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2020-11-11 15:49:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 342 transitions. [2020-11-11 15:49:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-11 15:49:19,917 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 15:49:19,917 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 15:49:19,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 15:49:19,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 15:49:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 15:49:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash -491317555, now seen corresponding path program 1 times [2020-11-11 15:49:19,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 15:49:19,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220640340] [2020-11-11 15:49:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 15:49:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 15:49:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 15:49:20,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220640340] [2020-11-11 15:49:20,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 15:49:20,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 15:49:20,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170472155] [2020-11-11 15:49:20,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 15:49:20,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 15:49:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 15:49:20,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-11 15:49:20,055 INFO L87 Difference]: Start difference. First operand 191 states and 342 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 15:49:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 15:49:20,192 INFO L93 Difference]: Finished difference Result 221 states and 402 transitions. [2020-11-11 15:49:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 15:49:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2020-11-11 15:49:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 15:49:20,194 INFO L225 Difference]: With dead ends: 221 [2020-11-11 15:49:20,194 INFO L226 Difference]: Without dead ends: 178 [2020-11-11 15:49:20,195 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 15:49:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-11 15:49:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-11 15:49:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 176 states have (on average 1.7045454545454546) internal successors, (300), 177 states have internal predecessors, (300), 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) [2020-11-11 15:49:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 300 transitions. [2020-11-11 15:49:20,209 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 300 transitions. Word has length 38 [2020-11-11 15:49:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 15:49:20,209 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 300 transitions. [2020-11-11 15:49:20,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 15:49:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 300 transitions. [2020-11-11 15:49:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-11 15:49:20,212 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 15:49:20,212 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 15:49:20,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 15:49:20,212 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 15:49:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 15:49:20,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1764292627, now seen corresponding path program 2 times [2020-11-11 15:49:20,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 15:49:20,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346191045] [2020-11-11 15:49:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 15:49:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 15:49:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 15:49:20,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346191045] [2020-11-11 15:49:20,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 15:49:20,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 15:49:20,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200928561] [2020-11-11 15:49:20,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 15:49:20,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 15:49:20,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 15:49:20,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-11 15:49:20,367 INFO L87 Difference]: Start difference. First operand 178 states and 300 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 15:49:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 15:49:20,425 INFO L93 Difference]: Finished difference Result 89 states and 148 transitions. [2020-11-11 15:49:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 15:49:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2020-11-11 15:49:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 15:49:20,427 INFO L225 Difference]: With dead ends: 89 [2020-11-11 15:49:20,429 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 15:49:20,430 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 15:49:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 15:49:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 15:49:20,432 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) [2020-11-11 15:49:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 15:49:20,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-11-11 15:49:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 15:49:20,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 15:49:20,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 15:49:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 15:49:20,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 15:49:20,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 15:49:20,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 03:49:20 BasicIcfg [2020-11-11 15:49:20,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 15:49:20,450 INFO L168 Benchmark]: Toolchain (without parser) took 2940.67 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 172.1 MB in the end (delta: 104.4 MB). Peak memory consumption was 103.5 MB. Max. memory is 16.0 GB. [2020-11-11 15:49:20,451 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 15:49:20,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.43 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 246.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 15:49:20,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 15:49:20,457 INFO L168 Benchmark]: Boogie Preprocessor took 30.90 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 15:49:20,457 INFO L168 Benchmark]: RCFGBuilder took 470.42 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 267.5 MB in the end (delta: -24.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2020-11-11 15:49:20,462 INFO L168 Benchmark]: TraceAbstraction took 1546.36 ms. Allocated memory is still 302.0 MB. Free memory was 266.4 MB in the beginning and 172.1 MB in the end (delta: 94.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. [2020-11-11 15:49:20,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 828.43 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 246.4 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 302.0 MB. Free memory was 246.4 MB in the beginning and 244.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.90 ms. Allocated memory is still 302.0 MB. Free memory was 244.5 MB in the beginning and 243.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 470.42 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 267.5 MB in the end (delta: -24.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1546.36 ms. Allocated memory is still 302.0 MB. Free memory was 266.4 MB in the beginning and 172.1 MB in the end (delta: 94.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 62 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 323 SDtfs, 152 SDslu, 379 SDs, 0 SdLazy, 88 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 7766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...