/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:20:14,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:20:14,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:20:14,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:20:14,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:20:14,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:20:14,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:20:14,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:20:14,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:20:14,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:20:14,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:20:14,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:20:14,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:20:14,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:20:14,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:20:14,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:20:14,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:20:14,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:20:14,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:20:14,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:20:14,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:20:14,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:20:14,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:20:14,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:20:14,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:20:14,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:20:14,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:20:14,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:20:14,594 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 [2020-11-12 00:20:14,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:20:14,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:20:14,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:20:14,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:20:14,651 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:20:14,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:20:14,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:20:14,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:20:14,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:20:14,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:20:14,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:20:14,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:20:14,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:20:14,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:20:14,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:20:14,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:20:14,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:20:14,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:20:14,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:20:14,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:20:14,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:20:14,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:20:14,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:20:14,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:20:14,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:20:14,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:20:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:20:14,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:20:14,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:20:15,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:20:15,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:20:15,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:20:15,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:20:15,077 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:20:15,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-11-12 00:20:15,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92b65592/f5cf1b914e2c4120970819d9f1f51bf8/FLAG484d10355 [2020-11-12 00:20:15,854 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:20:15,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-11-12 00:20:15,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92b65592/f5cf1b914e2c4120970819d9f1f51bf8/FLAG484d10355 [2020-11-12 00:20:16,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92b65592/f5cf1b914e2c4120970819d9f1f51bf8 [2020-11-12 00:20:16,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:20:16,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:20:16,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:20:16,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:20:16,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:20:16,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb092ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16, skipping insertion in model container [2020-11-12 00:20:16,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:20:16,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:20:16,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:20:16,675 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:20:16,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:20:16,842 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:20:16,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16 WrapperNode [2020-11-12 00:20:16,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:20:16,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:20:16,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:20:16,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:20:16,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:20:16,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:20:16,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:20:16,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:20:16,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... [2020-11-12 00:20:16,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:20:16,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:20:16,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:20:16,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:20:16,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:20:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-11-12 00:20:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-11-12 00:20:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:20:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:20:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:20:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:20:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:20:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:20:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:20:17,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:20:17,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 00:20:17,646 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:20:17,647 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-12 00:20:17,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:20:17 BoogieIcfgContainer [2020-11-12 00:20:17,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:20:17,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:20:17,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:20:17,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:20:17,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:20:16" (1/3) ... [2020-11-12 00:20:17,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75620402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:20:17, skipping insertion in model container [2020-11-12 00:20:17,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:20:16" (2/3) ... [2020-11-12 00:20:17,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75620402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:20:17, skipping insertion in model container [2020-11-12 00:20:17,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:20:17" (3/3) ... [2020-11-12 00:20:17,664 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-11-12 00:20:17,686 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:20:17,686 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:20:17,692 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:20:17,693 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:20:17,738 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,739 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,739 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,739 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,739 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,740 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,740 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,740 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,740 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,740 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,741 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,741 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,741 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,741 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,742 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,742 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,742 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,742 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,742 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,743 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,743 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,743 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,743 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,743 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,744 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,744 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,744 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,744 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,745 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,745 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,745 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,746 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,747 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,747 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,749 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,749 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,749 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,749 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,750 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,750 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,751 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,751 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,751 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,752 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,753 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,753 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,754 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,754 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,754 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,754 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,755 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,755 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,755 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,755 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,756 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,756 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,757 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,757 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,757 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,758 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,760 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,761 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,761 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,761 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,761 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,762 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,762 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,762 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,762 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,762 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,763 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:20:17,769 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:20:17,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 00:20:17,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:20:17,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:20:17,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:20:17,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:20:17,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:20:17,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:20:17,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:20:17,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:20:17,843 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:20:17,845 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 95 transitions, 195 flow [2020-11-12 00:20:17,849 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 95 transitions, 195 flow [2020-11-12 00:20:17,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 195 flow [2020-11-12 00:20:17,927 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2020-11-12 00:20:17,928 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:20:17,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2020-11-12 00:20:17,940 INFO L116 LiptonReduction]: Number of co-enabled transitions 2400 [2020-11-12 00:20:20,679 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-11-12 00:20:22,003 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-11-12 00:20:22,255 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-11-12 00:20:23,147 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-12 00:20:23,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 00:20:23,154 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-12 00:20:23,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 00:20:23,609 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-12 00:20:23,610 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 00:20:23,615 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-11-12 00:20:23,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-12 00:20:23,702 INFO L131 LiptonReduction]: Checked pairs total: 2975 [2020-11-12 00:20:23,702 INFO L133 LiptonReduction]: Total number of compositions: 112 [2020-11-12 00:20:23,709 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 16 transitions, 37 flow [2020-11-12 00:20:23,722 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 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) [2020-11-12 00:20:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 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) [2020-11-12 00:20:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 00:20:23,735 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:20:23,736 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 00:20:23,737 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:20:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:20:23,753 INFO L82 PathProgramCache]: Analyzing trace with hash 12209769, now seen corresponding path program 1 times [2020-11-12 00:20:23,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:20:23,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814470428] [2020-11-12 00:20:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:20:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:20:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:20:23,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814470428] [2020-11-12 00:20:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:20:23,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:20:23,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95963390] [2020-11-12 00:20:23,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:20:23,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:20:23,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:20:23,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:20:23,982 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 2.2) internal successors, (77), 36 states have internal predecessors, (77), 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), 2 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) [2020-11-12 00:20:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:20:24,026 INFO L93 Difference]: Finished difference Result 33 states and 57 transitions. [2020-11-12 00:20:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:20:24,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2020-11-12 00:20:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:20:24,040 INFO L225 Difference]: With dead ends: 33 [2020-11-12 00:20:24,040 INFO L226 Difference]: Without dead ends: 13 [2020-11-12 00:20:24,041 INFO L749 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 [2020-11-12 00:20:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-12 00:20:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-12 00:20:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2020-11-12 00:20:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-11-12 00:20:24,075 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2020-11-12 00:20:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:20:24,076 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-12 00:20:24,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2020-11-12 00:20:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-11-12 00:20:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:20:24,077 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:20:24,077 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:20:24,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:20:24,077 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:20:24,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:20:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1657068104, now seen corresponding path program 1 times [2020-11-12 00:20:24,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:20:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358375057] [2020-11-12 00:20:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:20:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:20:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:20:24,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358375057] [2020-11-12 00:20:24,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:20:24,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 00:20:24,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762247026] [2020-11-12 00:20:24,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:20:24,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:20:24,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:20:24,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:20:24,230 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2020-11-12 00:20:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:20:24,280 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-12 00:20:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:20:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2020-11-12 00:20:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:20:24,281 INFO L225 Difference]: With dead ends: 15 [2020-11-12 00:20:24,281 INFO L226 Difference]: Without dead ends: 11 [2020-11-12 00:20:24,283 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:20:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-12 00:20:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-12 00:20:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2020-11-12 00:20:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-12 00:20:24,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-12 00:20:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:20:24,286 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-12 00:20:24,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2020-11-12 00:20:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-12 00:20:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:20:24,287 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:20:24,287 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:20:24,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:20:24,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:20:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:20:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash 28692044, now seen corresponding path program 2 times [2020-11-12 00:20:24,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:20:24,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495907278] [2020-11-12 00:20:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:20:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:20:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 00:20:24,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495907278] [2020-11-12 00:20:24,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:20:24,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:20:24,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087775084] [2020-11-12 00:20:24,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:20:24,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:20:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:20:24,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:20:24,377 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2020-11-12 00:20:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:20:24,381 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-11-12 00:20:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:20:24,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2020-11-12 00:20:24,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:20:24,384 INFO L225 Difference]: With dead ends: 7 [2020-11-12 00:20:24,384 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:20:24,384 INFO L749 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 [2020-11-12 00:20:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:20:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:20:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:20:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:20:24,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-12 00:20:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:20:24,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:20:24,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2020-11-12 00:20:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:20:24,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:20:24,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:20:24,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:20:24 BasicIcfg [2020-11-12 00:20:24,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:20:24,398 INFO L168 Benchmark]: Toolchain (without parser) took 8250.08 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 275.5 MB in the beginning and 197.1 MB in the end (delta: 78.5 MB). Peak memory consumption was 146.5 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:24,399 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:20:24,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 276.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:24,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.57 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:24,406 INFO L168 Benchmark]: Boogie Preprocessor took 29.40 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 273.6 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:20:24,407 INFO L168 Benchmark]: RCFGBuilder took 724.15 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 246.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:24,410 INFO L168 Benchmark]: TraceAbstraction took 6737.76 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 246.3 MB in the beginning and 197.1 MB in the end (delta: 49.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:20:24,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 687.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.9 MB in the beginning and 276.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.57 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.40 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 273.6 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 724.15 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 246.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6737.76 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 246.3 MB in the beginning and 197.1 MB in the end (delta: 49.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1778 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.8s, 92 PlacesBefore, 17 PlacesAfterwards, 95 TransitionsBefore, 16 TransitionsAfterwards, 2400 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 4 ChoiceCompositions, 112 TotalNumberOfCompositions, 2975 MoverChecksTotal - PositiveResult [Line: 683]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 25 SDtfs, 11 SDslu, 19 SDs, 0 SdLazy, 33 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 377 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 correct! Received shutdown request...