/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:30:06,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:30:06,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:30:06,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:30:06,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:30:06,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:30:06,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:30:06,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:30:06,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:30:06,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:30:06,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:30:06,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:30:06,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:30:06,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:30:06,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:30:06,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:30:06,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:30:06,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:30:06,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:30:06,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:30:06,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:30:06,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:30:06,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:30:06,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:30:06,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:30:06,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:30:06,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:30:06,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:30:06,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:30:06,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:30:06,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:30:06,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:30:06,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:30:06,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:30:06,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:30:06,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:30:06,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:30:06,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:30:06,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:30:06,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:30:06,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:30:06,150 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-SemanticLbe.epf [2021-03-11 11:30:06,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:30:06,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:30:06,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:30:06,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:30:06,187 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:30:06,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:30:06,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:30:06,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:30:06,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:30:06,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:30:06,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:30:06,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:30:06,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:30:06,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:30:06,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:30:06,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:30:06,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:30:06,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:30:06,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:30:06,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:30:06,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:30:06,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:30:06,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:30:06,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:30:06,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:30:06,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:30:06,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:30:06,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:30:06,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:30:06,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:30:06,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:30:06,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:30:06,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:30:06,509 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:30:06,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-11 11:30:06,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f46843d1/863e592559fc4cefa3f0fe52b71bb25d/FLAGba93b5373 [2021-03-11 11:30:07,033 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:30:07,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2021-03-11 11:30:07,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f46843d1/863e592559fc4cefa3f0fe52b71bb25d/FLAGba93b5373 [2021-03-11 11:30:07,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f46843d1/863e592559fc4cefa3f0fe52b71bb25d [2021-03-11 11:30:07,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:30:07,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:30:07,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:30:07,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:30:07,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:30:07,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ff1572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07, skipping insertion in model container [2021-03-11 11:30:07,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:30:07,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:30:07,729 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-11 11:30:07,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:30:07,756 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:30:07,802 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i[30003,30016] [2021-03-11 11:30:07,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:30:07,887 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:30:07,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07 WrapperNode [2021-03-11 11:30:07,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:30:07,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:30:07,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:30:07,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:30:07,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:30:07,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:30:07,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:30:07,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:30:07,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (1/1) ... [2021-03-11 11:30:07,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:30:07,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:30:07,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:30:07,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:30:07,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (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 [2021-03-11 11:30:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-03-11 11:30:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-03-11 11:30:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:30:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:30:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:30:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:30:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:30:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:30:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:30:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:30:08,053 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:30:08,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:30:08,484 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-03-11 11:30:08,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:30:08 BoogieIcfgContainer [2021-03-11 11:30:08,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:30:08,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:30:08,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:30:08,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:30:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:30:07" (1/3) ... [2021-03-11 11:30:08,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7402f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:30:08, skipping insertion in model container [2021-03-11 11:30:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:30:07" (2/3) ... [2021-03-11 11:30:08,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7402f564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:30:08, skipping insertion in model container [2021-03-11 11:30:08,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:30:08" (3/3) ... [2021-03-11 11:30:08,492 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2021-03-11 11:30:08,496 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:30:08,497 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:30:08,500 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:30:08,501 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:30:08,521 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,521 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,522 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,523 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,524 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,525 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,526 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,527 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,527 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,528 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,529 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,530 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,531 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,532 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,532 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,533 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,534 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,534 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,534 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,534 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,535 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,535 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,535 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,536 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:30:08,537 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:30:08,553 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 11:30:08,592 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:30:08,593 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:30:08,593 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:30:08,593 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:30:08,593 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:30:08,593 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:30:08,593 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:30:08,593 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:30:08,604 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:30:08,612 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 96 transitions, 197 flow [2021-03-11 11:30:08,614 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 96 transitions, 197 flow [2021-03-11 11:30:08,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2021-03-11 11:30:08,652 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2021-03-11 11:30:08,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:30:08,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2021-03-11 11:30:08,658 INFO L116 LiptonReduction]: Number of co-enabled transitions 2500 [2021-03-11 11:30:11,354 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-11 11:30:11,749 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 11:30:11,968 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 11:30:12,174 INFO L131 LiptonReduction]: Checked pairs total: 3114 [2021-03-11 11:30:12,174 INFO L133 LiptonReduction]: Total number of compositions: 108 [2021-03-11 11:30:12,186 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2021-03-11 11:30:12,192 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42 states, 40 states have (on average 2.1) internal successors, (84), 41 states have internal predecessors, (84), 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) [2021-03-11 11:30:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 2.1) internal successors, (84), 41 states have internal predecessors, (84), 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) [2021-03-11 11:30:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-03-11 11:30:12,198 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:30:12,198 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-03-11 11:30:12,200 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:30:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:30:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 12027888, now seen corresponding path program 1 times [2021-03-11 11:30:12,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:30:12,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151067464] [2021-03-11 11:30:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:30:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:30:12,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:30:12,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:30:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:30:12,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151067464] [2021-03-11 11:30:12,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:30:12,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:30:12,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502939748] [2021-03-11 11:30:12,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:30:12,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:30:12,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:30:12,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:30:12,371 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 2.1) internal successors, (84), 41 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-03-11 11:30:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:30:12,405 INFO L93 Difference]: Finished difference Result 57 states and 101 transitions. [2021-03-11 11:30:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:30:12,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-03-11 11:30:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:30:12,412 INFO L225 Difference]: With dead ends: 57 [2021-03-11 11:30:12,412 INFO L226 Difference]: Without dead ends: 27 [2021-03-11 11:30:12,413 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:30:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-03-11 11:30:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-03-11 11:30:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 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) [2021-03-11 11:30:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2021-03-11 11:30:12,441 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 42 transitions. Word has length 4 [2021-03-11 11:30:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:30:12,441 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 42 transitions. [2021-03-11 11:30:12,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-03-11 11:30:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2021-03-11 11:30:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 11:30:12,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:30:12,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 11:30:12,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:30:12,442 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:30:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:30:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1326119302, now seen corresponding path program 1 times [2021-03-11 11:30:12,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:30:12,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520305255] [2021-03-11 11:30:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:30:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:30:12,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:30:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:30:12,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520305255] [2021-03-11 11:30:12,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:30:12,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:30:12,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426193134] [2021-03-11 11:30:12,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:30:12,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:30:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:30:12,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:30:12,537 INFO L87 Difference]: Start difference. First operand 27 states and 42 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:30:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:30:12,541 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2021-03-11 11:30:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:30:12,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-03-11 11:30:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:30:12,544 INFO L225 Difference]: With dead ends: 23 [2021-03-11 11:30:12,544 INFO L226 Difference]: Without dead ends: 23 [2021-03-11 11:30:12,545 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:30:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-03-11 11:30:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-03-11 11:30:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 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) [2021-03-11 11:30:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-03-11 11:30:12,550 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 6 [2021-03-11 11:30:12,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:30:12,550 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-03-11 11:30:12,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:30:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2021-03-11 11:30:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:30:12,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:30:12,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:30:12,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:30:12,551 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:30:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:30:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1904558684, now seen corresponding path program 1 times [2021-03-11 11:30:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:30:12,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184389960] [2021-03-11 11:30:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:30:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:30:12,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:30:12,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:30:12,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:30:12,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:30:12,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:30:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:30:12,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184389960] [2021-03-11 11:30:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:30:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:30:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535242522] [2021-03-11 11:30:12,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:30:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:30:12,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:30:12,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:30:12,627 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-03-11 11:30:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:30:12,648 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-03-11 11:30:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:30:12,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-03-11 11:30:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:30:12,650 INFO L225 Difference]: With dead ends: 27 [2021-03-11 11:30:12,650 INFO L226 Difference]: Without dead ends: 19 [2021-03-11 11:30:12,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:30:12,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-03-11 11:30:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-03-11 11:30:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-03-11 11:30:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-03-11 11:30:12,655 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2021-03-11 11:30:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:30:12,656 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-03-11 11:30:12,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-03-11 11:30:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-03-11 11:30:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:30:12,657 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:30:12,657 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:30:12,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:30:12,659 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:30:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:30:12,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2012576744, now seen corresponding path program 2 times [2021-03-11 11:30:12,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:30:12,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608139434] [2021-03-11 11:30:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:30:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:30:12,696 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:30:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:30:12,712 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:30:12,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 11:30:12,746 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 11:30:12,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:30:12,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:30:12 BasicIcfg [2021-03-11 11:30:12,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:30:12,788 INFO L168 Benchmark]: Toolchain (without parser) took 5414.01 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 237.0 MB in the beginning and 247.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 124.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,788 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:30:12,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.29 ms. Allocated memory was 255.9 MB in the beginning and 325.1 MB in the end (delta: 69.2 MB). Free memory was 236.5 MB in the beginning and 287.9 MB in the end (delta: -51.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 325.1 MB. Free memory was 287.9 MB in the beginning and 285.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,793 INFO L168 Benchmark]: Boogie Preprocessor took 30.72 ms. Allocated memory is still 325.1 MB. Free memory was 285.8 MB in the beginning and 284.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,794 INFO L168 Benchmark]: RCFGBuilder took 503.12 ms. Allocated memory is still 325.1 MB. Free memory was 284.4 MB in the beginning and 258.6 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,794 INFO L168 Benchmark]: TraceAbstraction took 4299.50 ms. Allocated memory was 325.1 MB in the beginning and 392.2 MB in the end (delta: 67.1 MB). Free memory was 258.0 MB in the beginning and 247.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:30:12,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 510.29 ms. Allocated memory was 255.9 MB in the beginning and 325.1 MB in the end (delta: 69.2 MB). Free memory was 236.5 MB in the beginning and 287.9 MB in the end (delta: -51.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.69 ms. Allocated memory is still 325.1 MB. Free memory was 287.9 MB in the beginning and 285.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.72 ms. Allocated memory is still 325.1 MB. Free memory was 285.8 MB in the beginning and 284.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 503.12 ms. Allocated memory is still 325.1 MB. Free memory was 284.4 MB in the beginning and 258.6 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4299.50 ms. Allocated memory was 325.1 MB in the beginning and 392.2 MB in the end (delta: 67.1 MB). Free memory was 258.0 MB in the beginning and 247.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3559.6ms, 94 PlacesBefore, 18 PlacesAfterwards, 96 TransitionsBefore, 17 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 3114 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2560, positive: 2443, positive conditional: 0, positive unconditional: 2443, negative: 117, negative conditional: 0, negative unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1916, positive: 1867, positive conditional: 0, positive unconditional: 1867, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1916, positive: 1856, positive conditional: 0, positive unconditional: 1856, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 279, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 235, negative conditional: 0, negative unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2560, positive: 576, positive conditional: 0, positive unconditional: 576, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 1916, unknown conditional: 0, unknown unconditional: 1916] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L755] 0 pthread_t t; [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L748] 1 int lse = stoppingEvent; [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] 0 status = BCSP_IoIncrement() VAL [pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4155.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 87.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3599.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 17 SDslu, 24 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.8ms SsaConstructionTime, 57.1ms SatisfiabilityAnalysisTime, 156.4ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! Received shutdown request...