/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:41:16,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:41:16,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:41:16,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:41:16,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:41:16,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:41:16,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:41:16,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:41:16,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:41:16,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:41:16,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:41:16,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:41:16,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:41:16,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:41:16,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:41:16,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:41:16,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:41:16,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:41:16,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:41:16,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:41:16,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:41:16,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:41:16,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:41:16,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:41:16,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:41:16,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:41:16,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:41:16,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:41:16,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:41:16,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:41:16,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:41:16,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:41:16,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:41:16,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:41:16,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:41:16,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:41:16,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:41:16,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:41:16,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:41:16,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:41:16,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:41:16,560 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-PN-NoLbe.epf [2021-06-10 12:41:16,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:41:16,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:41:16,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:41:16,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:41:16,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:41:16,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:41:16,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:41:16,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:41:16,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:41:16,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:41:16,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:41:16,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:41:16,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:41:16,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:41:16,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:41:16,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:41:16,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:41:16,805 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:41:16,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-06-10 12:41:16,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55662a504/a79ea174c02f4996a2d51ef7b05efd92/FLAG6603af2f7 [2021-06-10 12:41:17,278 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:41:17,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-06-10 12:41:17,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55662a504/a79ea174c02f4996a2d51ef7b05efd92/FLAG6603af2f7 [2021-06-10 12:41:17,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55662a504/a79ea174c02f4996a2d51ef7b05efd92 [2021-06-10 12:41:17,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:41:17,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:41:17,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:41:17,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:41:17,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:41:17,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:41:17" (1/1) ... [2021-06-10 12:41:17,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acf91b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:17, skipping insertion in model container [2021-06-10 12:41:17,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:41:17" (1/1) ... [2021-06-10 12:41:17,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:41:17,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:41:17,788 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-06-10 12:41:17,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:41:17,804 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:41:17,841 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-06-10 12:41:17,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:41:18,073 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:41:18,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18 WrapperNode [2021-06-10 12:41:18,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:41:18,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:41:18,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:41:18,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:41:18,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:41:18,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:41:18,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:41:18,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:41:18,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... [2021-06-10 12:41:18,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:41:18,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:41:18,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:41:18,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:41:18,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:41:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:41:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:41:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-10 12:41:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-10 12:41:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:41:18,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:41:18,180 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:41:18,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:41:18,529 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-06-10 12:41:18,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:41:18 BoogieIcfgContainer [2021-06-10 12:41:18,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:41:18,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:41:18,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:41:18,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:41:18,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:41:17" (1/3) ... [2021-06-10 12:41:18,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a465813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:41:18, skipping insertion in model container [2021-06-10 12:41:18,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:41:18" (2/3) ... [2021-06-10 12:41:18,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a465813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:41:18, skipping insertion in model container [2021-06-10 12:41:18,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:41:18" (3/3) ... [2021-06-10 12:41:18,535 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-06-10 12:41:18,539 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:41:18,542 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-06-10 12:41:18,542 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:41:18,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,556 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,557 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,558 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,558 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,558 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,559 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:41:18,561 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-10 12:41:18,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-10 12:41:18,584 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:41:18,584 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:41:18,585 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:41:18,585 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:41:18,585 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:41:18,585 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:41:18,585 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:41:18,585 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:41:18,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-06-10 12:41:18,612 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-06-10 12:41:18,612 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 12:41:18,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 4/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-06-10 12:41:18,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 182 flow [2021-06-10 12:41:18,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 72 transitions, 150 flow [2021-06-10 12:41:18,620 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-10 12:41:18,620 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:41:18,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:41:18,621 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:41:18,621 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:41:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:41:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1489094192, now seen corresponding path program 1 times [2021-06-10 12:41:18,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:41:18,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325903067] [2021-06-10 12:41:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:41:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:41:18,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:18,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:41:18,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:18,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:41:18,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:18,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 12:41:18,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:18,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 12:41:18,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:18,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:41:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:41:18,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325903067] [2021-06-10 12:41:18,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:41:18,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 12:41:18,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153044091] [2021-06-10 12:41:18,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 12:41:18,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:41:18,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 12:41:18,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 12:41:18,864 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2021-06-10 12:41:18,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:18,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:41:18,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2021-06-10 12:41:18,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:41:18,923 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2021-06-10 12:41:18,923 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 12:41:18,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 85 events. 3/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 1 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 46. Up to 11 conditions per place. [2021-06-10 12:41:18,924 INFO L132 encePairwiseOnDemand]: 75/87 looper letters, 12 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2021-06-10 12:41:18,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 194 flow [2021-06-10 12:41:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:41:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:41:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 430 transitions. [2021-06-10 12:41:18,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7060755336617406 [2021-06-10 12:41:18,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 430 transitions. [2021-06-10 12:41:18,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 430 transitions. [2021-06-10 12:41:18,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:41:18,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 430 transitions. [2021-06-10 12:41:18,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:18,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:18,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:18,944 INFO L185 Difference]: Start difference. First operand has 75 places, 72 transitions, 150 flow. Second operand 7 states and 430 transitions. [2021-06-10 12:41:18,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 194 flow [2021-06-10 12:41:18,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 12:41:18,949 INFO L241 Difference]: Finished difference. Result has 77 places, 70 transitions, 172 flow [2021-06-10 12:41:18,950 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2021-06-10 12:41:18,951 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2021-06-10 12:41:18,951 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 172 flow [2021-06-10 12:41:18,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:18,951 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:41:18,951 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:41:18,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:41:18,952 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:41:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:41:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1332456387, now seen corresponding path program 1 times [2021-06-10 12:41:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:41:18,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636320804] [2021-06-10 12:41:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:41:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:41:19,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:41:19,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:41:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:41:19,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636320804] [2021-06-10 12:41:19,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:41:19,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 12:41:19,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093918674] [2021-06-10 12:41:19,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 12:41:19,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:41:19,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 12:41:19,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 12:41:19,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 87 [2021-06-10 12:41:19,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:41:19,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 87 [2021-06-10 12:41:19,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:41:19,030 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-06-10 12:41:19,031 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2021-06-10 12:41:19,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 92 events. 2/92 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2021-06-10 12:41:19,031 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 10 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2021-06-10 12:41:19,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 206 flow [2021-06-10 12:41:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 12:41:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 12:41:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2021-06-10 12:41:19,033 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2021-06-10 12:41:19,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2021-06-10 12:41:19,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2021-06-10 12:41:19,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:41:19,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2021-06-10 12:41:19,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,035 INFO L185 Difference]: Start difference. First operand has 77 places, 70 transitions, 172 flow. Second operand 3 states and 225 transitions. [2021-06-10 12:41:19,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 206 flow [2021-06-10 12:41:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-06-10 12:41:19,036 INFO L241 Difference]: Finished difference. Result has 76 places, 72 transitions, 184 flow [2021-06-10 12:41:19,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2021-06-10 12:41:19,037 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2021-06-10 12:41:19,037 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 184 flow [2021-06-10 12:41:19,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,037 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:41:19,038 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:41:19,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:41:19,038 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:41:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:41:19,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1369789947, now seen corresponding path program 1 times [2021-06-10 12:41:19,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:41:19,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962664765] [2021-06-10 12:41:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:41:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:41:19,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:41:19,086 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-06-10 12:41:19,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:41:19,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 12:41:19,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 12:41:19,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:41:19,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:41:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:41:19,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962664765] [2021-06-10 12:41:19,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:41:19,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 12:41:19,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179370587] [2021-06-10 12:41:19,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 12:41:19,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:41:19,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 12:41:19,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 12:41:19,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 87 [2021-06-10 12:41:19,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:41:19,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 87 [2021-06-10 12:41:19,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:41:19,178 INFO L129 PetriNetUnfolder]: 2/90 cut-off events. [2021-06-10 12:41:19,178 INFO L130 PetriNetUnfolder]: For 27/33 co-relation queries the response was YES. [2021-06-10 12:41:19,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 90 events. 2/90 cut-off events. For 27/33 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 26. Up to 10 conditions per place. [2021-06-10 12:41:19,180 INFO L132 encePairwiseOnDemand]: 77/87 looper letters, 14 selfloop transitions, 6 changer transitions 6/71 dead transitions. [2021-06-10 12:41:19,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 236 flow [2021-06-10 12:41:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:41:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:41:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 427 transitions. [2021-06-10 12:41:19,181 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-06-10 12:41:19,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 427 transitions. [2021-06-10 12:41:19,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 427 transitions. [2021-06-10 12:41:19,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:41:19,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 427 transitions. [2021-06-10 12:41:19,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,185 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,185 INFO L185 Difference]: Start difference. First operand has 76 places, 72 transitions, 184 flow. Second operand 7 states and 427 transitions. [2021-06-10 12:41:19,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 236 flow [2021-06-10 12:41:19,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 220 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-10 12:41:19,189 INFO L241 Difference]: Finished difference. Result has 78 places, 64 transitions, 166 flow [2021-06-10 12:41:19,189 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2021-06-10 12:41:19,189 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2021-06-10 12:41:19,189 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 166 flow [2021-06-10 12:41:19,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:41:19,190 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:41:19,190 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:41:19,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:41:19,190 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:41:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:41:19,192 INFO L82 PathProgramCache]: Analyzing trace with hash -297055557, now seen corresponding path program 1 times [2021-06-10 12:41:19,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:41:19,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407860638] [2021-06-10 12:41:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:41:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 12:41:19,233 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 12:41:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 12:41:19,254 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 12:41:19,276 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 12:41:19,276 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 12:41:19,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:41:19,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:41:19 BasicIcfg [2021-06-10 12:41:19,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:41:19,315 INFO L168 Benchmark]: Toolchain (without parser) took 2004.08 ms. Allocated memory was 369.1 MB in the beginning and 480.2 MB in the end (delta: 111.1 MB). Free memory was 330.2 MB in the beginning and 368.0 MB in the end (delta: -37.8 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,316 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 350.0 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:41:19,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.34 ms. Allocated memory is still 369.1 MB. Free memory was 330.0 MB in the beginning and 313.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.56 ms. Allocated memory is still 369.1 MB. Free memory was 313.8 MB in the beginning and 310.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,320 INFO L168 Benchmark]: Boogie Preprocessor took 19.38 ms. Allocated memory is still 369.1 MB. Free memory was 310.7 MB in the beginning and 308.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,321 INFO L168 Benchmark]: RCFGBuilder took 399.87 ms. Allocated memory is still 369.1 MB. Free memory was 307.6 MB in the beginning and 267.7 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,322 INFO L168 Benchmark]: TraceAbstraction took 783.14 ms. Allocated memory was 369.1 MB in the beginning and 480.2 MB in the end (delta: 111.1 MB). Free memory was 266.7 MB in the beginning and 368.0 MB in the end (delta: -101.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:41:19,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 350.0 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 760.34 ms. Allocated memory is still 369.1 MB. Free memory was 330.0 MB in the beginning and 313.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.56 ms. Allocated memory is still 369.1 MB. Free memory was 313.8 MB in the beginning and 310.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.38 ms. Allocated memory is still 369.1 MB. Free memory was 310.7 MB in the beginning and 308.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 399.87 ms. Allocated memory is still 369.1 MB. Free memory was 307.6 MB in the beginning and 267.7 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 783.14 ms. Allocated memory was 369.1 MB in the beginning and 480.2 MB in the end (delta: 111.1 MB). Free memory was 266.7 MB in the beginning and 368.0 MB in the end (delta: -101.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; VAL [t1={7:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={3:0}, t1={7:0}] [L1698] 0 int pdev; VAL [mutex={3:0}, pdev=0, t1={7:0}] [L1709] 0 pdev = 1 VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1695] COND FALSE 0 !(!expression) VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={3:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={3:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 695.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 207.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 34 SDslu, 34 SDs, 0 SdLazy, 62 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.8ms SsaConstructionTime, 66.4ms SatisfiabilityAnalysisTime, 189.1ms InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...