/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:47:55,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:47:56,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:47:56,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:47:56,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:47:56,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:47:56,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:47:56,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:47:56,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:47:56,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:47:56,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:47:56,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:47:56,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:47:56,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:47:56,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:47:56,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:47:56,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:47:56,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:47:56,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:47:56,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:47:56,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:47:56,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:47:56,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:47:56,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:47:56,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 23:47:56,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 23:47:56,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 23:47:56,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 23:47:56,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 23:47:56,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 23:47:56,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:47:56,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:47:56,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:47:56,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:47:56,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:47:56,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:47:56,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:47:56,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:47:56,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:47:56,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:47:56,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:47:56,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:47:56,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:47:56,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:47:56,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:47:56,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:47:56,102 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:47:56,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:47:56,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:47:56,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:47:56,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:47:56,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:47:56,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:47:56,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:47:56,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:47:56,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:47:56,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:47:56,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:47:56,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:47:56,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:47:56,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:47:56,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:47:56,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:47:56,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:47:56,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:47:56,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:47:56,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:47:56,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:47:56,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:47:56,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:47:56,418 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:47:56,419 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-05 23:47:56,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ae6f831/48d05b4b57ab4bca83073e371758615a/FLAG6a05d3e5d [2020-10-05 23:47:57,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:47:57,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-05 23:47:57,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ae6f831/48d05b4b57ab4bca83073e371758615a/FLAG6a05d3e5d [2020-10-05 23:47:57,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88ae6f831/48d05b4b57ab4bca83073e371758615a [2020-10-05 23:47:57,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:47:57,312 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:47:57,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:47:57,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:47:57,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:47:57,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:47:57" (1/1) ... [2020-10-05 23:47:57,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ef61b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:57, skipping insertion in model container [2020-10-05 23:47:57,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:47:57" (1/1) ... [2020-10-05 23:47:57,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:47:57,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:47:57,599 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-05 23:47:57,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:47:57,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:47:57,989 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-05 23:47:58,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:47:58,106 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:47:58,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58 WrapperNode [2020-10-05 23:47:58,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:47:58,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:47:58,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:47:58,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:47:58,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:47:58,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:47:58,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:47:58,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:47:58,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (1/1) ... [2020-10-05 23:47:58,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:47:58,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:47:58,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:47:58,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:47:58,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (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 [2020-10-05 23:47:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:47:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:47:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-05 23:47:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:47:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:47:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:47:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-05 23:47:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-05 23:47:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:47:58,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:47:58,258 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:47:58,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:47:58,607 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:47:58,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:47:58 BoogieIcfgContainer [2020-10-05 23:47:58,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:47:58,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:47:58,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:47:58,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:47:58,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:47:57" (1/3) ... [2020-10-05 23:47:58,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625d7263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:47:58, skipping insertion in model container [2020-10-05 23:47:58,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:58" (2/3) ... [2020-10-05 23:47:58,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625d7263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:47:58, skipping insertion in model container [2020-10-05 23:47:58,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:47:58" (3/3) ... [2020-10-05 23:47:58,618 INFO L109 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-05 23:47:58,630 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:47:58,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:47:58,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:47:58,639 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:47:58,668 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,668 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,668 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,669 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,669 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,670 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,671 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,671 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,671 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,672 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,676 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,676 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,676 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,677 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,677 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,677 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:58,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:47:58,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:47:58,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:47:58,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:47:58,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:47:58,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:47:58,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:47:58,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:47:58,719 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:47:58,737 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 59 transitions, 126 flow [2020-10-05 23:47:58,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-05 23:47:58,794 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-05 23:47:58,794 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:47:58,799 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-05 23:47:58,801 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-05 23:47:58,820 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-05 23:47:58,820 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:47:58,821 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-05 23:47:58,823 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 352 [2020-10-05 23:47:58,824 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:47:59,938 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-05 23:48:00,416 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-05 23:48:00,545 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-05 23:48:00,550 INFO L206 etLargeBlockEncoding]: Checked pairs total: 354 [2020-10-05 23:48:00,551 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-10-05 23:48:00,554 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-10-05 23:48:00,561 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-05 23:48:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-05 23:48:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-05 23:48:00,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:00,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-05 23:48:00,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:00,577 INFO L82 PathProgramCache]: Analyzing trace with hash 225592945, now seen corresponding path program 1 times [2020-10-05 23:48:00,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:00,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829514640] [2020-10-05 23:48:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:00,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829514640] [2020-10-05 23:48:00,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:48:00,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:48:00,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558786018] [2020-10-05 23:48:00,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:48:00,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:00,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:48:00,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:48:00,826 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-05 23:48:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:00,877 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2020-10-05 23:48:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:48:00,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-05 23:48:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:00,893 INFO L225 Difference]: With dead ends: 13 [2020-10-05 23:48:00,894 INFO L226 Difference]: Without dead ends: 10 [2020-10-05 23:48:00,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:48:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-05 23:48:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-05 23:48:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-05 23:48:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2020-10-05 23:48:00,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 5 [2020-10-05 23:48:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:00,933 INFO L479 AbstractCegarLoop]: Abstraction has 10 states and 16 transitions. [2020-10-05 23:48:00,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:48:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 16 transitions. [2020-10-05 23:48:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 23:48:00,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:00,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:00,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:48:00,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2032051994, now seen corresponding path program 1 times [2020-10-05 23:48:00,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:00,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629816174] [2020-10-05 23:48:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629816174] [2020-10-05 23:48:01,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:48:01,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:48:01,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471855369] [2020-10-05 23:48:01,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:48:01,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:01,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:48:01,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:48:01,037 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2020-10-05 23:48:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:01,051 INFO L93 Difference]: Finished difference Result 12 states and 20 transitions. [2020-10-05 23:48:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:48:01,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-05 23:48:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:01,054 INFO L225 Difference]: With dead ends: 12 [2020-10-05 23:48:01,054 INFO L226 Difference]: Without dead ends: 12 [2020-10-05 23:48:01,055 INFO L675 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 [2020-10-05 23:48:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-05 23:48:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-05 23:48:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-05 23:48:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 20 transitions. [2020-10-05 23:48:01,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 20 transitions. Word has length 7 [2020-10-05 23:48:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:01,061 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 20 transitions. [2020-10-05 23:48:01,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:48:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 20 transitions. [2020-10-05 23:48:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:48:01,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:01,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:01,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:48:01,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:01,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1430445622, now seen corresponding path program 1 times [2020-10-05 23:48:01,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:01,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604452665] [2020-10-05 23:48:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604452665] [2020-10-05 23:48:01,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792270711] [2020-10-05 23:48:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-05 23:48:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:01,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-05 23:48:01,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785284845] [2020-10-05 23:48:01,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:48:01,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:48:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:48:01,280 INFO L87 Difference]: Start difference. First operand 12 states and 20 transitions. Second operand 6 states. [2020-10-05 23:48:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:01,301 INFO L93 Difference]: Finished difference Result 14 states and 24 transitions. [2020-10-05 23:48:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:48:01,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-05 23:48:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:01,303 INFO L225 Difference]: With dead ends: 14 [2020-10-05 23:48:01,303 INFO L226 Difference]: Without dead ends: 14 [2020-10-05 23:48:01,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:48:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-05 23:48:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-05 23:48:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-05 23:48:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 24 transitions. [2020-10-05 23:48:01,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 24 transitions. Word has length 8 [2020-10-05 23:48:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:01,308 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 24 transitions. [2020-10-05 23:48:01,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:48:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 24 transitions. [2020-10-05 23:48:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:48:01,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:01,309 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:01,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-05 23:48:01,521 INFO L427 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1393689318, now seen corresponding path program 2 times [2020-10-05 23:48:01,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:01,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065971956] [2020-10-05 23:48:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065971956] [2020-10-05 23:48:01,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854208382] [2020-10-05 23:48:01,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:01,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:48:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:01,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-05 23:48:01,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592716162] [2020-10-05 23:48:01,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 23:48:01,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 23:48:01,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:48:01,683 INFO L87 Difference]: Start difference. First operand 14 states and 24 transitions. Second operand 7 states. [2020-10-05 23:48:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:01,703 INFO L93 Difference]: Finished difference Result 16 states and 28 transitions. [2020-10-05 23:48:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:48:01,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-10-05 23:48:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:01,705 INFO L225 Difference]: With dead ends: 16 [2020-10-05 23:48:01,705 INFO L226 Difference]: Without dead ends: 16 [2020-10-05 23:48:01,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:48:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-05 23:48:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-05 23:48:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-05 23:48:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 28 transitions. [2020-10-05 23:48:01,709 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 28 transitions. Word has length 9 [2020-10-05 23:48:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:01,710 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 28 transitions. [2020-10-05 23:48:01,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 23:48:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 28 transitions. [2020-10-05 23:48:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:48:01,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:01,711 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:01,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:01,921 INFO L82 PathProgramCache]: Analyzing trace with hash -254243894, now seen corresponding path program 3 times [2020-10-05 23:48:01,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:01,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504063590] [2020-10-05 23:48:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:01,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504063590] [2020-10-05 23:48:01,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179725525] [2020-10-05 23:48:01,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:02,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:48:02,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:02,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:48:02,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-05 23:48:02,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 23:48:02,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-05 23:48:02,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499513123] [2020-10-05 23:48:02,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:48:02,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:02,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:48:02,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:48:02,075 INFO L87 Difference]: Start difference. First operand 16 states and 28 transitions. Second operand 4 states. [2020-10-05 23:48:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:02,099 INFO L93 Difference]: Finished difference Result 15 states and 27 transitions. [2020-10-05 23:48:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 23:48:02,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 23:48:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:02,100 INFO L225 Difference]: With dead ends: 15 [2020-10-05 23:48:02,100 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:48:02,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:48:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:48:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:48:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:48:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:48:02,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-05 23:48:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:02,102 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:48:02,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:48:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:48:02,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:48:02,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:48:02 BasicIcfg [2020-10-05 23:48:02,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:48:02,317 INFO L168 Benchmark]: Toolchain (without parser) took 5005.69 ms. Allocated memory was 138.4 MB in the beginning and 250.1 MB in the end (delta: 111.7 MB). Free memory was 100.2 MB in the beginning and 207.3 MB in the end (delta: -107.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,318 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.60 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 161.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.34 ms. Allocated memory is still 201.9 MB. Free memory was 161.4 MB in the beginning and 159.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,321 INFO L168 Benchmark]: Boogie Preprocessor took 29.93 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 157.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,322 INFO L168 Benchmark]: RCFGBuilder took 423.47 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 136.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:48:02,322 INFO L168 Benchmark]: TraceAbstraction took 3704.72 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 135.3 MB in the beginning and 207.3 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-05 23:48:02,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.60 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 161.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.34 ms. Allocated memory is still 201.9 MB. Free memory was 161.4 MB in the beginning and 159.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.93 ms. Allocated memory is still 201.9 MB. Free memory was 159.2 MB in the beginning and 157.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.47 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 136.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3704.72 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 135.3 MB in the beginning and 207.3 MB in the end (delta: -72.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 58 ProgramPointsBefore, 15 ProgramPointsAfterwards, 59 TransitionsBefore, 13 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 192 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 354 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 56 SDtfs, 22 SDslu, 61 SDs, 0 SdLazy, 43 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 970 SizeOfPredicates, 3 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/20 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...