/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 16:25:06,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 16:25:06,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 16:25:06,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 16:25:06,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 16:25:06,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 16:25:06,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 16:25:06,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 16:25:06,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 16:25:06,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 16:25:06,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 16:25:06,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 16:25:06,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 16:25:06,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 16:25:06,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 16:25:06,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 16:25:06,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 16:25:06,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 16:25:06,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 16:25:06,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 16:25:06,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 16:25:06,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 16:25:06,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 16:25:06,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 16:25:06,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 16:25:06,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 16:25:06,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 16:25:06,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 16:25:06,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 16:25:06,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 16:25:06,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 16:25:06,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 16:25:06,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 16:25:06,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 16:25:06,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 16:25:06,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 16:25:06,137 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-McrAutomaton-SP.epf [2020-11-09 16:25:06,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 16:25:06,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 16:25:06,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 16:25:06,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 16:25:06,168 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 16:25:06,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 16:25:06,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 16:25:06,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 16:25:06,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 16:25:06,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 16:25:06,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 16:25:06,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 16:25:06,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 16:25:06,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 16:25:06,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 16:25:06,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 16:25:06,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 16:25:06,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 16:25:06,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 16:25:06,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 16:25:06,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 16:25:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:25:06,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 16:25:06,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 16:25:06,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 16:25:06,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 16:25:06,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 16:25:06,173 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 16:25:06,173 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 16:25:06,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 16:25:06,173 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 16:25:06,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 16:25:06,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 16:25:06,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 16:25:06,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 16:25:06,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 16:25:06,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-11-09 16:25:06,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0e569db/366d97e0ef1a41e18100a27fc7339bde/FLAGa737dbdbd [2020-11-09 16:25:07,467 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 16:25:07,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2020-11-09 16:25:07,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0e569db/366d97e0ef1a41e18100a27fc7339bde/FLAGa737dbdbd [2020-11-09 16:25:07,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0e569db/366d97e0ef1a41e18100a27fc7339bde [2020-11-09 16:25:07,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 16:25:07,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 16:25:07,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 16:25:07,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 16:25:07,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 16:25:07,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:25:07" (1/1) ... [2020-11-09 16:25:07,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554f1940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:07, skipping insertion in model container [2020-11-09 16:25:07,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:25:07" (1/1) ... [2020-11-09 16:25:07,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 16:25:07,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 16:25:08,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:25:08,327 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 16:25:08,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:25:08,506 INFO L208 MainTranslator]: Completed translation [2020-11-09 16:25:08,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08 WrapperNode [2020-11-09 16:25:08,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 16:25:08,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 16:25:08,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 16:25:08,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 16:25:08,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 16:25:08,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 16:25:08,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 16:25:08,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 16:25:08,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (1/1) ... [2020-11-09 16:25:08,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 16:25:08,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 16:25:08,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 16:25:08,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 16:25:08,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (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 [2020-11-09 16:25:08,664 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 16:25:08,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 16:25:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 16:25:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 16:25:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 16:25:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 16:25:08,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 16:25:08,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 16:25:08,667 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 16:25:09,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 16:25:09,254 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-09 16:25:09,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:25:09 BoogieIcfgContainer [2020-11-09 16:25:09,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 16:25:09,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 16:25:09,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 16:25:09,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 16:25:09,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:25:07" (1/3) ... [2020-11-09 16:25:09,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138224de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:25:09, skipping insertion in model container [2020-11-09 16:25:09,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:25:08" (2/3) ... [2020-11-09 16:25:09,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138224de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:25:09, skipping insertion in model container [2020-11-09 16:25:09,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:25:09" (3/3) ... [2020-11-09 16:25:09,273 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2020-11-09 16:25:09,291 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 16:25:09,292 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 16:25:09,297 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 16:25:09,298 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 16:25:09,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,348 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,352 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,353 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,357 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,358 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,358 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,358 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:25:09,368 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 16:25:09,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 16:25:09,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 16:25:09,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 16:25:09,407 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 16:25:09,407 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 16:25:09,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 16:25:09,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 16:25:09,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 16:25:09,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 16:25:09,421 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 16:25:09,422 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-09 16:25:09,425 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 96 transitions, 197 flow [2020-11-09 16:25:09,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 96 transitions, 197 flow [2020-11-09 16:25:09,475 INFO L129 PetriNetUnfolder]: 26/95 cut-off events. [2020-11-09 16:25:09,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 16:25:09,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 26/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2020-11-09 16:25:09,487 INFO L116 LiptonReduction]: Number of co-enabled transitions 3150 [2020-11-09 16:25:10,278 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2020-11-09 16:25:11,532 WARN L194 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-09 16:25:11,828 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-11-09 16:25:11,965 INFO L131 LiptonReduction]: Checked pairs total: 5998 [2020-11-09 16:25:11,965 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-09 16:25:11,972 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2020-11-09 16:25:12,005 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 227 states. [2020-11-09 16:25:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-11-09 16:25:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 16:25:12,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:12,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:12,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 556857473, now seen corresponding path program 1 times [2020-11-09 16:25:12,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:12,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881709003] [2020-11-09 16:25:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:12,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881709003] [2020-11-09 16:25:12,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:12,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:25:12,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [824276432] [2020-11-09 16:25:12,226 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:12,229 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:12,242 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 16:25:12,242 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:12,247 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:25:12,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 16:25:12,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:12,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 16:25:12,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 16:25:12,266 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 2 states. [2020-11-09 16:25:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:12,284 INFO L93 Difference]: Finished difference Result 198 states and 534 transitions. [2020-11-09 16:25:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 16:25:12,285 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-09 16:25:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:12,299 INFO L225 Difference]: With dead ends: 198 [2020-11-09 16:25:12,300 INFO L226 Difference]: Without dead ends: 198 [2020-11-09 16:25:12,301 INFO L677 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 [2020-11-09 16:25:12,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-09 16:25:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-09 16:25:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-09 16:25:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 534 transitions. [2020-11-09 16:25:12,367 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 534 transitions. Word has length 9 [2020-11-09 16:25:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:12,367 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 534 transitions. [2020-11-09 16:25:12,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 16:25:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 534 transitions. [2020-11-09 16:25:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:25:12,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:12,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:12,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 16:25:12,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:12,371 INFO L82 PathProgramCache]: Analyzing trace with hash -265870444, now seen corresponding path program 1 times [2020-11-09 16:25:12,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:12,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189961221] [2020-11-09 16:25:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:12,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189961221] [2020-11-09 16:25:12,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:12,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:25:12,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1671065181] [2020-11-09 16:25:12,460 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:12,461 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:12,463 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-11-09 16:25:12,464 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:12,464 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:25:12,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:25:12,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:12,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:25:12,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:12,469 INFO L87 Difference]: Start difference. First operand 198 states and 534 transitions. Second operand 3 states. [2020-11-09 16:25:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:12,548 INFO L93 Difference]: Finished difference Result 362 states and 979 transitions. [2020-11-09 16:25:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:25:12,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 16:25:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:12,556 INFO L225 Difference]: With dead ends: 362 [2020-11-09 16:25:12,556 INFO L226 Difference]: Without dead ends: 362 [2020-11-09 16:25:12,558 INFO L677 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 [2020-11-09 16:25:12,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-11-09 16:25:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 221. [2020-11-09 16:25:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-11-09 16:25:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 589 transitions. [2020-11-09 16:25:12,606 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 589 transitions. Word has length 11 [2020-11-09 16:25:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:12,611 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 589 transitions. [2020-11-09 16:25:12,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:25:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 589 transitions. [2020-11-09 16:25:12,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:25:12,613 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:12,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:12,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 16:25:12,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1897023782, now seen corresponding path program 1 times [2020-11-09 16:25:12,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:12,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82452166] [2020-11-09 16:25:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:12,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82452166] [2020-11-09 16:25:12,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:12,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:25:12,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148730263] [2020-11-09 16:25:12,733 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:12,735 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:12,736 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-11-09 16:25:12,736 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:12,737 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:25:12,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:25:12,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:12,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:25:12,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:12,741 INFO L87 Difference]: Start difference. First operand 221 states and 589 transitions. Second operand 3 states. [2020-11-09 16:25:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:12,772 INFO L93 Difference]: Finished difference Result 348 states and 934 transitions. [2020-11-09 16:25:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:25:12,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 16:25:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:12,778 INFO L225 Difference]: With dead ends: 348 [2020-11-09 16:25:12,778 INFO L226 Difference]: Without dead ends: 348 [2020-11-09 16:25:12,778 INFO L677 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 [2020-11-09 16:25:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-09 16:25:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 218. [2020-11-09 16:25:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 16:25:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 560 transitions. [2020-11-09 16:25:12,800 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 560 transitions. Word has length 11 [2020-11-09 16:25:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:12,800 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 560 transitions. [2020-11-09 16:25:12,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:25:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 560 transitions. [2020-11-09 16:25:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 16:25:12,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:12,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:12,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 16:25:12,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash -293575379, now seen corresponding path program 1 times [2020-11-09 16:25:12,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:12,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686734829] [2020-11-09 16:25:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:12,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686734829] [2020-11-09 16:25:12,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:12,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:25:12,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1630465832] [2020-11-09 16:25:12,847 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:12,848 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:12,850 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-11-09 16:25:12,850 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:12,863 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2724#(<= 2 ~flag1~0)] [2020-11-09 16:25:12,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:25:12,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:12,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:25:12,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:25:12,865 INFO L87 Difference]: Start difference. First operand 218 states and 560 transitions. Second operand 4 states. [2020-11-09 16:25:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:12,948 INFO L93 Difference]: Finished difference Result 252 states and 619 transitions. [2020-11-09 16:25:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:25:12,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-09 16:25:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:12,951 INFO L225 Difference]: With dead ends: 252 [2020-11-09 16:25:12,951 INFO L226 Difference]: Without dead ends: 252 [2020-11-09 16:25:12,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:25:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-09 16:25:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 235. [2020-11-09 16:25:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-09 16:25:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 581 transitions. [2020-11-09 16:25:12,965 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 581 transitions. Word has length 19 [2020-11-09 16:25:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:12,966 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 581 transitions. [2020-11-09 16:25:12,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:25:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 581 transitions. [2020-11-09 16:25:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 16:25:12,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:12,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:12,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 16:25:12,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash -369860675, now seen corresponding path program 2 times [2020-11-09 16:25:12,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:12,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869900582] [2020-11-09 16:25:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:13,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869900582] [2020-11-09 16:25:13,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:13,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:25:13,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [869521473] [2020-11-09 16:25:13,012 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:13,014 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:13,016 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 38 transitions. [2020-11-09 16:25:13,016 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:13,035 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:25:13,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:25:13,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:25:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:13,037 INFO L87 Difference]: Start difference. First operand 235 states and 581 transitions. Second operand 3 states. [2020-11-09 16:25:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:13,077 INFO L93 Difference]: Finished difference Result 224 states and 540 transitions. [2020-11-09 16:25:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:25:13,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-09 16:25:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:13,080 INFO L225 Difference]: With dead ends: 224 [2020-11-09 16:25:13,080 INFO L226 Difference]: Without dead ends: 224 [2020-11-09 16:25:13,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-09 16:25:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-09 16:25:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-09 16:25:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 540 transitions. [2020-11-09 16:25:13,091 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 540 transitions. Word has length 19 [2020-11-09 16:25:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:13,091 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 540 transitions. [2020-11-09 16:25:13,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:25:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 540 transitions. [2020-11-09 16:25:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 16:25:13,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:25:13,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:25:13,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 16:25:13,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:25:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:25:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -520856579, now seen corresponding path program 3 times [2020-11-09 16:25:13,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:25:13,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553562380] [2020-11-09 16:25:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:25:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:25:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:25:13,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553562380] [2020-11-09 16:25:13,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:25:13,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:25:13,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1350056167] [2020-11-09 16:25:13,129 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:25:13,130 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:25:13,133 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 48 transitions. [2020-11-09 16:25:13,133 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:25:13,148 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:25:13,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:25:13,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:25:13,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:25:13,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:13,150 INFO L87 Difference]: Start difference. First operand 224 states and 540 transitions. Second operand 3 states. [2020-11-09 16:25:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:25:13,198 INFO L93 Difference]: Finished difference Result 179 states and 425 transitions. [2020-11-09 16:25:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:25:13,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-09 16:25:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:25:13,199 INFO L225 Difference]: With dead ends: 179 [2020-11-09 16:25:13,199 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 16:25:13,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:25:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 16:25:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 16:25:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 16:25:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 16:25:13,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-09 16:25:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:25:13,201 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 16:25:13,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:25:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 16:25:13,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 16:25:13,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 16:25:13,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:25:13 BasicIcfg [2020-11-09 16:25:13,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 16:25:13,208 INFO L168 Benchmark]: Toolchain (without parser) took 5414.28 ms. Allocated memory was 152.0 MB in the beginning and 199.2 MB in the end (delta: 47.2 MB). Free memory was 127.2 MB in the beginning and 93.9 MB in the end (delta: 33.3 MB). Peak memory consumption was 81.7 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,208 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:25:13,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.31 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 128.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.47 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 126.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,211 INFO L168 Benchmark]: Boogie Preprocessor took 32.36 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,212 INFO L168 Benchmark]: RCFGBuilder took 665.98 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 102.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,213 INFO L168 Benchmark]: TraceAbstraction took 3942.17 ms. Allocated memory was 152.0 MB in the beginning and 199.2 MB in the end (delta: 47.2 MB). Free memory was 102.5 MB in the beginning and 93.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 8.0 GB. [2020-11-09 16:25:13,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.31 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 128.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.47 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 126.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.36 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 665.98 ms. Allocated memory is still 152.0 MB. Free memory was 125.1 MB in the beginning and 102.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3942.17 ms. Allocated memory was 152.0 MB in the beginning and 199.2 MB in the end (delta: 47.2 MB). Free memory was 102.5 MB in the beginning and 93.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1354 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 74 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 51 TransitionsAfterwards, 3150 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5998 MoverChecksTotal - 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, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 310 SDtfs, 143 SDslu, 142 SDs, 0 SdLazy, 94 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=4, 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, 6 MinimizatonAttempts, 288 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...