/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 08:30:14,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 08:30:14,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 08:30:14,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 08:30:14,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 08:30:14,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 08:30:14,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 08:30:14,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 08:30:14,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 08:30:14,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 08:30:14,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 08:30:14,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 08:30:14,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 08:30:14,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 08:30:14,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 08:30:14,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 08:30:14,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 08:30:14,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 08:30:14,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 08:30:14,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 08:30:14,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 08:30:14,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 08:30:14,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 08:30:14,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 08:30:14,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 08:30:14,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 08:30:14,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 08:30:14,142 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 08:30:14,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 08:30:14,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 08:30:14,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 08:30:14,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 08:30:14,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 08:30:14,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 08:30:14,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 08:30:14,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 08:30:14,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 08:30:14,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 08:30:14,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 08:30:14,146 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 08:30:14,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 08:30:14,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 08:30:14,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 08:30:14,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 08:30:14,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 08:30:14,496 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 08:30:14,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-06-05 08:30:14,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1fe8c97f/3df18b47dac447f29d117a50919918a7/FLAGd65f9ed71 [2021-06-05 08:30:15,161 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 08:30:15,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-06-05 08:30:15,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1fe8c97f/3df18b47dac447f29d117a50919918a7/FLAGd65f9ed71 [2021-06-05 08:30:15,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1fe8c97f/3df18b47dac447f29d117a50919918a7 [2021-06-05 08:30:15,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 08:30:15,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 08:30:15,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 08:30:15,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 08:30:15,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 08:30:15,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:30:15" (1/1) ... [2021-06-05 08:30:15,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16663313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:15, skipping insertion in model container [2021-06-05 08:30:15,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:30:15" (1/1) ... [2021-06-05 08:30:15,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 08:30:15,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 08:30:15,917 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-06-05 08:30:15,921 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-06-05 08:30:15,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 08:30:15,930 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 08:30:15,958 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-06-05 08:30:15,961 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-06-05 08:30:15,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 08:30:16,013 INFO L208 MainTranslator]: Completed translation [2021-06-05 08:30:16,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16 WrapperNode [2021-06-05 08:30:16,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 08:30:16,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 08:30:16,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 08:30:16,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 08:30:16,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 08:30:16,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 08:30:16,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 08:30:16,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 08:30:16,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (1/1) ... [2021-06-05 08:30:16,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 08:30:16,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 08:30:16,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 08:30:16,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 08:30:16,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (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 [2021-06-05 08:30:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-05 08:30:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-05 08:30:16,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 08:30:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 08:30:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 08:30:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 08:30:16,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 08:30:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 08:30:16,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 08:30:16,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 08:30:16,555 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-06-05 08:30:16,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:30:16 BoogieIcfgContainer [2021-06-05 08:30:16,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 08:30:16,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 08:30:16,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 08:30:16,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 08:30:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:30:15" (1/3) ... [2021-06-05 08:30:16,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726f0c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:30:16, skipping insertion in model container [2021-06-05 08:30:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:30:16" (2/3) ... [2021-06-05 08:30:16,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726f0c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:30:16, skipping insertion in model container [2021-06-05 08:30:16,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:30:16" (3/3) ... [2021-06-05 08:30:16,563 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-06-05 08:30:16,568 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 08:30:16,568 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 08:30:16,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-05 08:30:16,569 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 08:30:16,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 08:30:16,619 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 08:30:16,637 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 08:30:16,658 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 08:30:16,658 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 08:30:16,658 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 08:30:16,658 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 08:30:16,658 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 08:30:16,659 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 08:30:16,659 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 08:30:16,659 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 08:30:16,671 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 91 transitions, 187 flow [2021-06-05 08:30:16,725 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 637 states, 633 states have (on average 2.8720379146919433) internal successors, (1818), 636 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 637 states, 633 states have (on average 2.8720379146919433) internal successors, (1818), 636 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 08:30:16,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:16,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:16,742 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:16,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1300194564, now seen corresponding path program 1 times [2021-06-05 08:30:16,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:16,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359723252] [2021-06-05 08:30:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:16,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:16,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359723252] [2021-06-05 08:30:16,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359723252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:16,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:16,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 08:30:16,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985186508] [2021-06-05 08:30:16,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 08:30:16,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:16,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 08:30:16,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 08:30:16,966 INFO L87 Difference]: Start difference. First operand has 637 states, 633 states have (on average 2.8720379146919433) internal successors, (1818), 636 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:16,987 INFO L93 Difference]: Finished difference Result 353 states and 874 transitions. [2021-06-05 08:30:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 08:30:16,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 08:30:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,000 INFO L225 Difference]: With dead ends: 353 [2021-06-05 08:30:17,001 INFO L226 Difference]: Without dead ends: 353 [2021-06-05 08:30:17,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 08:30:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-06-05 08:30:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-06-05 08:30:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.4829545454545454) internal successors, (874), 352 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 874 transitions. [2021-06-05 08:30:17,070 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 874 transitions. Word has length 28 [2021-06-05 08:30:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,070 INFO L482 AbstractCegarLoop]: Abstraction has 353 states and 874 transitions. [2021-06-05 08:30:17,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 874 transitions. [2021-06-05 08:30:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 08:30:17,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:17,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:17,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 08:30:17,072 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1251932606, now seen corresponding path program 1 times [2021-06-05 08:30:17,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:17,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018400168] [2021-06-05 08:30:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:17,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:17,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018400168] [2021-06-05 08:30:17,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018400168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:17,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:17,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:30:17,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974077406] [2021-06-05 08:30:17,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:30:17,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:17,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:30:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,168 INFO L87 Difference]: Start difference. First operand 353 states and 874 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:17,225 INFO L93 Difference]: Finished difference Result 546 states and 1391 transitions. [2021-06-05 08:30:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:30:17,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 08:30:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,231 INFO L225 Difference]: With dead ends: 546 [2021-06-05 08:30:17,232 INFO L226 Difference]: Without dead ends: 546 [2021-06-05 08:30:17,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-06-05 08:30:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 368. [2021-06-05 08:30:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.4877384196185286) internal successors, (913), 367 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 913 transitions. [2021-06-05 08:30:17,276 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 913 transitions. Word has length 28 [2021-06-05 08:30:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,279 INFO L482 AbstractCegarLoop]: Abstraction has 368 states and 913 transitions. [2021-06-05 08:30:17,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 913 transitions. [2021-06-05 08:30:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-06-05 08:30:17,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:17,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:17,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 08:30:17,281 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash 692974268, now seen corresponding path program 1 times [2021-06-05 08:30:17,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:17,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185966064] [2021-06-05 08:30:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:17,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:17,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185966064] [2021-06-05 08:30:17,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185966064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:17,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:17,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:30:17,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634598035] [2021-06-05 08:30:17,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:30:17,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:17,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:30:17,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,334 INFO L87 Difference]: Start difference. First operand 368 states and 913 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:17,355 INFO L93 Difference]: Finished difference Result 514 states and 1304 transitions. [2021-06-05 08:30:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:30:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-06-05 08:30:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,358 INFO L225 Difference]: With dead ends: 514 [2021-06-05 08:30:17,358 INFO L226 Difference]: Without dead ends: 514 [2021-06-05 08:30:17,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-06-05 08:30:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 360. [2021-06-05 08:30:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 360 states have (on average 2.422222222222222) internal successors, (872), 359 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 872 transitions. [2021-06-05 08:30:17,371 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 872 transitions. Word has length 33 [2021-06-05 08:30:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,371 INFO L482 AbstractCegarLoop]: Abstraction has 360 states and 872 transitions. [2021-06-05 08:30:17,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 872 transitions. [2021-06-05 08:30:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 08:30:17,374 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:17,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:17,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 08:30:17,374 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1946801951, now seen corresponding path program 1 times [2021-06-05 08:30:17,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:17,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054564269] [2021-06-05 08:30:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:17,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:17,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054564269] [2021-06-05 08:30:17,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054564269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:17,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:17,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:30:17,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080220011] [2021-06-05 08:30:17,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:30:17,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:30:17,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,433 INFO L87 Difference]: Start difference. First operand 360 states and 872 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:17,498 INFO L93 Difference]: Finished difference Result 382 states and 910 transitions. [2021-06-05 08:30:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:30:17,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 08:30:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,500 INFO L225 Difference]: With dead ends: 382 [2021-06-05 08:30:17,500 INFO L226 Difference]: Without dead ends: 382 [2021-06-05 08:30:17,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-06-05 08:30:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-06-05 08:30:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 382 states have (on average 2.3821989528795813) internal successors, (910), 381 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 910 transitions. [2021-06-05 08:30:17,511 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 910 transitions. Word has length 42 [2021-06-05 08:30:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,512 INFO L482 AbstractCegarLoop]: Abstraction has 382 states and 910 transitions. [2021-06-05 08:30:17,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 910 transitions. [2021-06-05 08:30:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 08:30:17,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:17,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:17,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 08:30:17,514 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1008107847, now seen corresponding path program 2 times [2021-06-05 08:30:17,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:17,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518238788] [2021-06-05 08:30:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:17,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:17,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518238788] [2021-06-05 08:30:17,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518238788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:17,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:17,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:30:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500867151] [2021-06-05 08:30:17,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:30:17,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:30:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,552 INFO L87 Difference]: Start difference. First operand 382 states and 910 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:17,622 INFO L93 Difference]: Finished difference Result 379 states and 879 transitions. [2021-06-05 08:30:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:30:17,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 08:30:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,629 INFO L225 Difference]: With dead ends: 379 [2021-06-05 08:30:17,629 INFO L226 Difference]: Without dead ends: 379 [2021-06-05 08:30:17,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-06-05 08:30:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 374. [2021-06-05 08:30:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 374 states have (on average 2.323529411764706) internal successors, (869), 373 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 869 transitions. [2021-06-05 08:30:17,640 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 869 transitions. Word has length 42 [2021-06-05 08:30:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,641 INFO L482 AbstractCegarLoop]: Abstraction has 374 states and 869 transitions. [2021-06-05 08:30:17,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 869 transitions. [2021-06-05 08:30:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 08:30:17,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 08:30:17,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 08:30:17,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 08:30:17,650 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 08:30:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 08:30:17,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1356013637, now seen corresponding path program 3 times [2021-06-05 08:30:17,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 08:30:17,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257877951] [2021-06-05 08:30:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 08:30:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 08:30:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 08:30:17,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 08:30:17,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257877951] [2021-06-05 08:30:17,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257877951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 08:30:17,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 08:30:17,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 08:30:17,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404070803] [2021-06-05 08:30:17,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 08:30:17,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 08:30:17,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 08:30:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,731 INFO L87 Difference]: Start difference. First operand 374 states and 869 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 08:30:17,789 INFO L93 Difference]: Finished difference Result 324 states and 743 transitions. [2021-06-05 08:30:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 08:30:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 08:30:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 08:30:17,791 INFO L225 Difference]: With dead ends: 324 [2021-06-05 08:30:17,791 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 08:30:17,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 08:30:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 08:30:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 08:30:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 08:30:17,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-06-05 08:30:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 08:30:17,794 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 08:30:17,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 08:30:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 08:30:17,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 08:30:17,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 08:30:17,797 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 08:30:17,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:30:17 BasicIcfg [2021-06-05 08:30:17,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 08:30:17,800 INFO L168 Benchmark]: Toolchain (without parser) took 2222.38 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 194.7 MB in the end (delta: 126.1 MB). Peak memory consumption was 124.6 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,801 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 338.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 08:30:17,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.97 ms. Allocated memory is still 358.6 MB. Free memory was 320.6 MB in the beginning and 322.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 358.6 MB. Free memory was 322.6 MB in the beginning and 320.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,806 INFO L168 Benchmark]: Boogie Preprocessor took 19.87 ms. Allocated memory is still 358.6 MB. Free memory was 320.5 MB in the beginning and 319.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,806 INFO L168 Benchmark]: RCFGBuilder took 490.99 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 294.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,809 INFO L168 Benchmark]: TraceAbstraction took 1242.09 ms. Allocated memory is still 358.6 MB. Free memory was 294.3 MB in the beginning and 194.7 MB in the end (delta: 99.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 16.0 GB. [2021-06-05 08:30:17,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory was 338.9 MB in the beginning and 338.8 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 433.97 ms. Allocated memory is still 358.6 MB. Free memory was 320.6 MB in the beginning and 322.6 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 358.6 MB. Free memory was 322.6 MB in the beginning and 320.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.87 ms. Allocated memory is still 358.6 MB. Free memory was 320.5 MB in the beginning and 319.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 490.99 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 294.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1242.09 ms. Allocated memory is still 358.6 MB. Free memory was 294.3 MB in the beginning and 194.7 MB in the end (delta: 99.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1142.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 25.0ms, AutomataDifference: 356.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 489 SDtfs, 174 SDslu, 222 SDs, 0 SdLazy, 78 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=637occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 132.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 337 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 106.8ms SatisfiabilityAnalysisTime, 254.6ms InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...