/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:56:48,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:56:48,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:56:48,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:56:48,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:56:48,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:56:48,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:56:48,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:56:48,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:56:48,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:56:48,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:56:48,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:56:48,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:56:48,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:56:48,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:56:48,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:56:48,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:56:48,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:56:48,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:56:48,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:56:48,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:56:48,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:56:48,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:56:48,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:56:48,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:56:48,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:56:48,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:56:48,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:56:48,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:56:48,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:56:48,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:56:48,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:56:48,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:56:48,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:56:48,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:56:48,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:56:48,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:56:48,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:56:48,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:56:48,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:56:48,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:56:48,550 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:56:48,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:56:48,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:56:48,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:56:48,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:56:48,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:56:48,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:56:48,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:56:48,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:56:48,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:56:48,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:56:48,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:56:48,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:56:48,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:56:48,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:56:48,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:56:48,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:56:48,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:56:48,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:56:48,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:56:48,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:56:48,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:56:49,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:56:49,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:56:49,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:56:49,023 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:56:49,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-09 12:56:49,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223f493f6/3cb96ed273294d21845c71fc7909037d/FLAGfe93a7742 [2020-11-09 12:56:49,801 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:56:49,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-09 12:56:49,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223f493f6/3cb96ed273294d21845c71fc7909037d/FLAGfe93a7742 [2020-11-09 12:56:49,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223f493f6/3cb96ed273294d21845c71fc7909037d [2020-11-09 12:56:49,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:56:50,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:56:50,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:56:50,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:56:50,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:56:50,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:56:49" (1/1) ... [2020-11-09 12:56:50,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed4f835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50, skipping insertion in model container [2020-11-09 12:56:50,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:56:49" (1/1) ... [2020-11-09 12:56:50,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:56:50,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:56:50,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:56:50,503 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:56:50,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:56:50,723 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:56:50,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50 WrapperNode [2020-11-09 12:56:50,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:56:50,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:56:50,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:56:50,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:56:50,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:56:50,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:56:50,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:56:50,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:56:50,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... [2020-11-09 12:56:50,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:56:50,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:56:50,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:56:50,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:56:50,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:56:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-11-09 12:56:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-11-09 12:56:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:56:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:56:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:56:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:56:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:56:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:56:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:56:50,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:56:50,916 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:56:51,388 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:56:51,388 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-09 12:56:51,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:56:51 BoogieIcfgContainer [2020-11-09 12:56:51,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:56:51,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:56:51,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:56:51,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:56:51,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:56:49" (1/3) ... [2020-11-09 12:56:51,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17192d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:56:51, skipping insertion in model container [2020-11-09 12:56:51,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:56:50" (2/3) ... [2020-11-09 12:56:51,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17192d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:56:51, skipping insertion in model container [2020-11-09 12:56:51,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:56:51" (3/3) ... [2020-11-09 12:56:51,399 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-11-09 12:56:51,414 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:56:51,414 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:56:51,418 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:56:51,419 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:56:51,449 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,449 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,449 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,449 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,450 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,450 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,450 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,450 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,451 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,451 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,451 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,451 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,452 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,452 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,452 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,452 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,452 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,453 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,453 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,453 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,453 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,453 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,454 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,454 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,454 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,454 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,455 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,455 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,455 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,455 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,456 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,457 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,457 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,457 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,457 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,458 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,458 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,458 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,459 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,459 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,459 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,459 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,460 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,460 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,460 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,460 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,461 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,461 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,461 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,461 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,462 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,462 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,462 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,462 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,463 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,463 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,465 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,465 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,465 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,466 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,466 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,467 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,467 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,467 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,467 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:56:51,472 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:56:51,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-09 12:56:51,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:56:51,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:56:51,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:56:51,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:56:51,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:56:51,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:56:51,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:56:51,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:56:51,519 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:56:51,521 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 96 transitions, 197 flow [2020-11-09 12:56:51,524 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 96 transitions, 197 flow [2020-11-09 12:56:51,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 96 transitions, 197 flow [2020-11-09 12:56:51,584 INFO L129 PetriNetUnfolder]: 7/95 cut-off events. [2020-11-09 12:56:51,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:56:51,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 7/95 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. 0/87 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2020-11-09 12:56:51,595 INFO L116 LiptonReduction]: Number of co-enabled transitions 2448 [2020-11-09 12:56:56,489 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-11-09 12:56:56,606 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-11-09 12:56:56,780 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-11-09 12:56:57,096 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-09 12:56:57,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:56:57,107 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-09 12:56:57,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:56:57,124 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-09 12:56:57,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:56:57,132 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-09 12:56:57,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 12:56:57,156 INFO L131 LiptonReduction]: Checked pairs total: 2720 [2020-11-09 12:56:57,156 INFO L133 LiptonReduction]: Total number of compositions: 114 [2020-11-09 12:56:57,162 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 35 flow [2020-11-09 12:56:57,172 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 37 states. [2020-11-09 12:56:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-09 12:56:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-09 12:56:57,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:57,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-09 12:56:57,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash 12209869, now seen corresponding path program 1 times [2020-11-09 12:56:57,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:57,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487046922] [2020-11-09 12:56:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:56:57,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:56:57,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487046922] [2020-11-09 12:56:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:56:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:56:57,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965348183] [2020-11-09 12:56:57,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:56:57,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:56:57,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:56:57,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,389 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-09 12:56:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:56:57,420 INFO L93 Difference]: Finished difference Result 61 states and 111 transitions. [2020-11-09 12:56:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:56:57,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-09 12:56:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:56:57,431 INFO L225 Difference]: With dead ends: 61 [2020-11-09 12:56:57,432 INFO L226 Difference]: Without dead ends: 34 [2020-11-09 12:56:57,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-09 12:56:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-11-09 12:56:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-09 12:56:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 37 transitions. [2020-11-09 12:56:57,467 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 37 transitions. Word has length 4 [2020-11-09 12:56:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:56:57,467 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 37 transitions. [2020-11-09 12:56:57,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:56:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 37 transitions. [2020-11-09 12:56:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-09 12:56:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:57,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-09 12:56:57,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:56:57,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 378458501, now seen corresponding path program 1 times [2020-11-09 12:56:57,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:57,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097614015] [2020-11-09 12:56:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:56:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:56:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097614015] [2020-11-09 12:56:57,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:56:57,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:56:57,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258399060] [2020-11-09 12:56:57,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:56:57,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:56:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:56:57,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,556 INFO L87 Difference]: Start difference. First operand 22 states and 37 transitions. Second operand 3 states. [2020-11-09 12:56:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:56:57,563 INFO L93 Difference]: Finished difference Result 18 states and 29 transitions. [2020-11-09 12:56:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:56:57,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-09 12:56:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:56:57,564 INFO L225 Difference]: With dead ends: 18 [2020-11-09 12:56:57,565 INFO L226 Difference]: Without dead ends: 18 [2020-11-09 12:56:57,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-09 12:56:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-09 12:56:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-09 12:56:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 29 transitions. [2020-11-09 12:56:57,569 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 29 transitions. Word has length 5 [2020-11-09 12:56:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:56:57,570 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 29 transitions. [2020-11-09 12:56:57,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:56:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 29 transitions. [2020-11-09 12:56:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:56:57,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:57,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:56:57,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:56:57,571 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash 367718591, now seen corresponding path program 1 times [2020-11-09 12:56:57,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:57,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342973383] [2020-11-09 12:56:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:56:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:56:57,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342973383] [2020-11-09 12:56:57,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:56:57,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:56:57,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958373970] [2020-11-09 12:56:57,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:56:57,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:56:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:56:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,690 INFO L87 Difference]: Start difference. First operand 18 states and 29 transitions. Second operand 3 states. [2020-11-09 12:56:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:56:57,712 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2020-11-09 12:56:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:56:57,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:56:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:56:57,713 INFO L225 Difference]: With dead ends: 22 [2020-11-09 12:56:57,713 INFO L226 Difference]: Without dead ends: 18 [2020-11-09 12:56:57,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-09 12:56:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-09 12:56:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-09 12:56:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-11-09 12:56:57,718 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 8 [2020-11-09 12:56:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:56:57,719 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-09 12:56:57,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:56:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-11-09 12:56:57,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:56:57,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:57,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:56:57,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:56:57,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:57,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:57,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1934747618, now seen corresponding path program 1 times [2020-11-09 12:56:57,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:57,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052162849] [2020-11-09 12:56:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:56:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:56:57,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052162849] [2020-11-09 12:56:57,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:56:57,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:56:57,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277478373] [2020-11-09 12:56:57,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:56:57,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:56:57,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:56:57,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,772 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 3 states. [2020-11-09 12:56:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:56:57,779 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-11-09 12:56:57,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:56:57,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 12:56:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:56:57,781 INFO L225 Difference]: With dead ends: 18 [2020-11-09 12:56:57,781 INFO L226 Difference]: Without dead ends: 14 [2020-11-09 12:56:57,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:56:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-09 12:56:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-09 12:56:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-09 12:56:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-09 12:56:57,784 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2020-11-09 12:56:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:56:57,784 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-09 12:56:57,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:56:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-09 12:56:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:56:57,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:57,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:56:57,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:56:57,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:57,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:57,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1268681954, now seen corresponding path program 2 times [2020-11-09 12:56:57,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:57,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431243156] [2020-11-09 12:56:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:56:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:56:57,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431243156] [2020-11-09 12:56:57,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:56:57,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:56:57,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909609] [2020-11-09 12:56:57,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:56:57,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:56:57,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:56:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:56:57,923 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 6 states. [2020-11-09 12:56:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:56:58,044 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-09 12:56:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:56:58,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-09 12:56:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:56:58,046 INFO L225 Difference]: With dead ends: 16 [2020-11-09 12:56:58,046 INFO L226 Difference]: Without dead ends: 12 [2020-11-09 12:56:58,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:56:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-09 12:56:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-09 12:56:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-09 12:56:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-09 12:56:58,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2020-11-09 12:56:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:56:58,053 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-09 12:56:58,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:56:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-09 12:56:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:56:58,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:56:58,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:56:58,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:56:58,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:56:58,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:56:58,058 INFO L82 PathProgramCache]: Analyzing trace with hash 885271784, now seen corresponding path program 3 times [2020-11-09 12:56:58,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:56:58,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518864529] [2020-11-09 12:56:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:56:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 12:56:58,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 12:56:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-09 12:56:58,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-09 12:56:58,190 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-09 12:56:58,190 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-09 12:56:58,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:56:58,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:56:58 BasicIcfg [2020-11-09 12:56:58,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:56:58,243 INFO L168 Benchmark]: Toolchain (without parser) took 8243.58 ms. Allocated memory was 165.7 MB in the beginning and 241.2 MB in the end (delta: 75.5 MB). Free memory was 139.5 MB in the beginning and 208.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:56:58,245 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 140.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:56:58,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.99 ms. Allocated memory is still 165.7 MB. Free memory was 138.9 MB in the beginning and 143.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:56:58,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.21 ms. Allocated memory is still 165.7 MB. Free memory was 143.1 MB in the beginning and 141.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:56:58,248 INFO L168 Benchmark]: Boogie Preprocessor took 26.22 ms. Allocated memory is still 165.7 MB. Free memory was 141.0 MB in the beginning and 139.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:56:58,248 INFO L168 Benchmark]: RCFGBuilder took 560.70 ms. Allocated memory is still 165.7 MB. Free memory was 139.5 MB in the beginning and 113.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:56:58,249 INFO L168 Benchmark]: TraceAbstraction took 6847.05 ms. Allocated memory was 165.7 MB in the beginning and 241.2 MB in the end (delta: 75.5 MB). Free memory was 113.2 MB in the beginning and 208.7 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:56:58,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 140.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 716.99 ms. Allocated memory is still 165.7 MB. Free memory was 138.9 MB in the beginning and 143.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 76.21 ms. Allocated memory is still 165.7 MB. Free memory was 143.1 MB in the beginning and 141.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.22 ms. Allocated memory is still 165.7 MB. Free memory was 141.0 MB in the beginning and 139.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.70 ms. Allocated memory is still 165.7 MB. Free memory was 139.5 MB in the beginning and 113.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6847.05 ms. Allocated memory was 165.7 MB in the beginning and 241.2 MB in the end (delta: 75.5 MB). Free memory was 113.2 MB in the beginning and 208.7 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1829 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.6s, 93 PlacesBefore, 17 PlacesAfterwards, 96 TransitionsBefore, 15 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 114 TotalNumberOfCompositions, 2720 MoverChecksTotal - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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; [L740] 0 pthread_t t; [L741] 0 pendingIo = 1 [L742] 0 stoppingFlag = 0 [L743] 0 stoppingEvent = 0 [L744] 0 stopped = 0 [L745] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L724] 0 int status; [L702] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 1 stoppingFlag = 1 [L717] 1 int pending; [L711] 1 pendingIo-- [L712] 1 int tmp = pendingIo; [L714] 1 return tmp; [L705] 0 pendingIo = pendingIo + 1 [L707] 0 return 0; [L718] 1 pending = dec() [L719] COND TRUE 1 pending == 0 [L720] 1 stoppingEvent = 1 [L686] COND FALSE 1 !(!cond) [L736] 1 stopped = 1 [L737] 1 return 0; [L725] 0 status = BCSP_IoIncrement() [L726] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 62 SDtfs, 17 SDslu, 35 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...