/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:34:12,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:34:12,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:34:12,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:34:12,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:34:12,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:34:12,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:34:12,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:34:12,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:34:12,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:34:12,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:34:12,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:34:12,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:34:12,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:34:12,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:34:12,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:34:12,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:34:12,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:34:12,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:34:12,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:34:12,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:34:12,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:34:12,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:34:12,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:34:12,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 10:34:12,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 10:34:12,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 10:34:12,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 10:34:12,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 10:34:12,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 10:34:12,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:34:12,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:34:12,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:34:12,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:34:12,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:34:12,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:34:12,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:34:12,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:34:12,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:34:12,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:34:12,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:34:12,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:34:12,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:34:12,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:34:12,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:34:12,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:34:12,359 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:34:12,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:34:12,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:34:12,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:34:12,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:34:12,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:34:12,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:34:12,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:34:12,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:34:12,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:34:12,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:34:12,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:34:12,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:34:12,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:34:12,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:34:12,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:34:12,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:34:12,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:34:12,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:34:12,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:34:12,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:34:12,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:34:12,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:34:12,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:34:12,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:34:12,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:34:12,875 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:34:12,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/szymanski.i [2020-12-22 10:34:12,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0f81887/9a3fe1df457e42adae19fcc79b3b486b/FLAG0a45dd0e8 [2020-12-22 10:34:13,770 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:34:13,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i [2020-12-22 10:34:13,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0f81887/9a3fe1df457e42adae19fcc79b3b486b/FLAG0a45dd0e8 [2020-12-22 10:34:13,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0f81887/9a3fe1df457e42adae19fcc79b3b486b [2020-12-22 10:34:13,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:34:14,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:34:14,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:34:14,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:34:14,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:34:14,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:34:13" (1/1) ... [2020-12-22 10:34:14,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219f31a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14, skipping insertion in model container [2020-12-22 10:34:14,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:34:13" (1/1) ... [2020-12-22 10:34:14,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:34:14,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:34:14,408 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-22 10:34:14,605 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2020-12-22 10:34:14,614 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2020-12-22 10:34:14,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:34:14,630 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:34:14,650 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-22 10:34:14,672 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2020-12-22 10:34:14,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2020-12-22 10:34:14,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:34:14,789 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:34:14,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14 WrapperNode [2020-12-22 10:34:14,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:34:14,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:34:14,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:34:14,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:34:14,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:34:14,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:34:14,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:34:14,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:34:14,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (1/1) ... [2020-12-22 10:34:14,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:34:14,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:34:14,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:34:14,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:34:14,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (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 [2020-12-22 10:34:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 10:34:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-22 10:34:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-22 10:34:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-22 10:34:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-22 10:34:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 10:34:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 10:34:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:34:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 10:34:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:34:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 10:34:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:34:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:34:15,021 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 10:34:15,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:34:15,403 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 10:34:15,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:34:15 BoogieIcfgContainer [2020-12-22 10:34:15,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:34:15,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:34:15,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:34:15,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:34:15,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:34:13" (1/3) ... [2020-12-22 10:34:15,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214239b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:34:15, skipping insertion in model container [2020-12-22 10:34:15,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:34:14" (2/3) ... [2020-12-22 10:34:15,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214239b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:34:15, skipping insertion in model container [2020-12-22 10:34:15,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:34:15" (3/3) ... [2020-12-22 10:34:15,418 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-12-22 10:34:15,427 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 10:34:15,427 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:34:15,434 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:34:15,435 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 10:34:15,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,496 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,497 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,503 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,503 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,503 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,508 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,511 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,512 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,513 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,513 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,513 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,513 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,514 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,522 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,522 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,523 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,523 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,526 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,527 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,550 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,551 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,562 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,572 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,573 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,574 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,574 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,587 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,587 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,588 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,588 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:34:15,611 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-12-22 10:34:15,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 10:34:15,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:34:15,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:34:15,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:34:15,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:34:15,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:34:15,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:34:15,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:34:15,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:34:15,709 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 10:34:15,712 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 109 transitions, 240 flow [2020-12-22 10:34:15,715 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 109 transitions, 240 flow [2020-12-22 10:34:15,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 109 transitions, 240 flow [2020-12-22 10:34:15,818 INFO L129 PetriNetUnfolder]: 21/109 cut-off events. [2020-12-22 10:34:15,818 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-12-22 10:34:15,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 109 events. 21/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2020-12-22 10:34:15,838 INFO L116 LiptonReduction]: Number of co-enabled transitions 3528 [2020-12-22 10:34:18,079 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:34:18,361 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 10:34:18,470 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 10:34:18,706 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-22 10:34:18,820 INFO L131 LiptonReduction]: Checked pairs total: 9414 [2020-12-22 10:34:18,820 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-22 10:34:18,827 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 53 transitions, 128 flow [2020-12-22 10:34:18,870 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 575 states. [2020-12-22 10:34:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-12-22 10:34:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 10:34:18,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:18,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:18,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:18,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1395682617, now seen corresponding path program 1 times [2020-12-22 10:34:18,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:18,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227207584] [2020-12-22 10:34:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:19,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227207584] [2020-12-22 10:34:19,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:19,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:34:19,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121035722] [2020-12-22 10:34:19,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:34:19,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:19,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:34:19,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,153 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 3 states. [2020-12-22 10:34:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:19,232 INFO L93 Difference]: Finished difference Result 623 states and 1713 transitions. [2020-12-22 10:34:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:34:19,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 10:34:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:19,268 INFO L225 Difference]: With dead ends: 623 [2020-12-22 10:34:19,268 INFO L226 Difference]: Without dead ends: 446 [2020-12-22 10:34:19,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-12-22 10:34:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 428. [2020-12-22 10:34:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-12-22 10:34:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1214 transitions. [2020-12-22 10:34:19,406 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1214 transitions. Word has length 10 [2020-12-22 10:34:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:19,407 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 1214 transitions. [2020-12-22 10:34:19,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:34:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1214 transitions. [2020-12-22 10:34:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 10:34:19,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:19,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:19,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:34:19,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:19,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1830914178, now seen corresponding path program 1 times [2020-12-22 10:34:19,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:19,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826707663] [2020-12-22 10:34:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:19,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826707663] [2020-12-22 10:34:19,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:19,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:34:19,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960173735] [2020-12-22 10:34:19,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:34:19,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:19,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:34:19,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,484 INFO L87 Difference]: Start difference. First operand 428 states and 1214 transitions. Second operand 3 states. [2020-12-22 10:34:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:19,512 INFO L93 Difference]: Finished difference Result 413 states and 1158 transitions. [2020-12-22 10:34:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:34:19,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-22 10:34:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:19,518 INFO L225 Difference]: With dead ends: 413 [2020-12-22 10:34:19,518 INFO L226 Difference]: Without dead ends: 308 [2020-12-22 10:34:19,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-22 10:34:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2020-12-22 10:34:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-12-22 10:34:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 866 transitions. [2020-12-22 10:34:19,550 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 866 transitions. Word has length 12 [2020-12-22 10:34:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:19,550 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 866 transitions. [2020-12-22 10:34:19,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:34:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 866 transitions. [2020-12-22 10:34:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 10:34:19,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:19,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:19,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:34:19,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:19,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1877941582, now seen corresponding path program 1 times [2020-12-22 10:34:19,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:19,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046704702] [2020-12-22 10:34:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:19,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046704702] [2020-12-22 10:34:19,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:19,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:34:19,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619027609] [2020-12-22 10:34:19,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:34:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:34:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,648 INFO L87 Difference]: Start difference. First operand 308 states and 866 transitions. Second operand 3 states. [2020-12-22 10:34:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:19,681 INFO L93 Difference]: Finished difference Result 308 states and 862 transitions. [2020-12-22 10:34:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:34:19,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 10:34:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:19,685 INFO L225 Difference]: With dead ends: 308 [2020-12-22 10:34:19,685 INFO L226 Difference]: Without dead ends: 308 [2020-12-22 10:34:19,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-22 10:34:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2020-12-22 10:34:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-12-22 10:34:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 862 transitions. [2020-12-22 10:34:19,699 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 862 transitions. Word has length 19 [2020-12-22 10:34:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:19,699 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 862 transitions. [2020-12-22 10:34:19,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:34:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 862 transitions. [2020-12-22 10:34:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 10:34:19,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:19,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:19,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:34:19,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:19,702 INFO L82 PathProgramCache]: Analyzing trace with hash -604449698, now seen corresponding path program 1 times [2020-12-22 10:34:19,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:19,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854186786] [2020-12-22 10:34:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:19,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854186786] [2020-12-22 10:34:19,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:19,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 10:34:19,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200667707] [2020-12-22 10:34:19,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:34:19,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:34:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:34:19,806 INFO L87 Difference]: Start difference. First operand 308 states and 862 transitions. Second operand 4 states. [2020-12-22 10:34:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:19,897 INFO L93 Difference]: Finished difference Result 392 states and 1094 transitions. [2020-12-22 10:34:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:34:19,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-22 10:34:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:19,900 INFO L225 Difference]: With dead ends: 392 [2020-12-22 10:34:19,901 INFO L226 Difference]: Without dead ends: 274 [2020-12-22 10:34:19,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:34:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-22 10:34:19,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 244. [2020-12-22 10:34:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-22 10:34:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 634 transitions. [2020-12-22 10:34:19,911 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 634 transitions. Word has length 19 [2020-12-22 10:34:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:19,911 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 634 transitions. [2020-12-22 10:34:19,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:34:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 634 transitions. [2020-12-22 10:34:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 10:34:19,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:19,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:19,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:34:19,913 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:19,914 INFO L82 PathProgramCache]: Analyzing trace with hash -394659122, now seen corresponding path program 2 times [2020-12-22 10:34:19,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:19,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251828465] [2020-12-22 10:34:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:19,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251828465] [2020-12-22 10:34:19,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:19,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:34:19,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523872588] [2020-12-22 10:34:19,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:34:19,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:34:19,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,948 INFO L87 Difference]: Start difference. First operand 244 states and 634 transitions. Second operand 3 states. [2020-12-22 10:34:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:19,979 INFO L93 Difference]: Finished difference Result 274 states and 713 transitions. [2020-12-22 10:34:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:34:19,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 10:34:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:19,982 INFO L225 Difference]: With dead ends: 274 [2020-12-22 10:34:19,982 INFO L226 Difference]: Without dead ends: 274 [2020-12-22 10:34:19,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:34:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-22 10:34:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 244. [2020-12-22 10:34:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-22 10:34:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 630 transitions. [2020-12-22 10:34:19,992 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 630 transitions. Word has length 19 [2020-12-22 10:34:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:19,992 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 630 transitions. [2020-12-22 10:34:19,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:34:19,993 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 630 transitions. [2020-12-22 10:34:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 10:34:19,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:34:19,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:34:19,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:34:19,994 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:34:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:34:19,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1200101758, now seen corresponding path program 3 times [2020-12-22 10:34:19,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:34:19,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138621153] [2020-12-22 10:34:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:34:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:34:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:34:20,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138621153] [2020-12-22 10:34:20,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:34:20,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 10:34:20,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191656089] [2020-12-22 10:34:20,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:34:20,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:34:20,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:34:20,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:34:20,048 INFO L87 Difference]: Start difference. First operand 244 states and 630 transitions. Second operand 4 states. [2020-12-22 10:34:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:34:20,102 INFO L93 Difference]: Finished difference Result 214 states and 581 transitions. [2020-12-22 10:34:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:34:20,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-22 10:34:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:34:20,103 INFO L225 Difference]: With dead ends: 214 [2020-12-22 10:34:20,103 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 10:34:20,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:34:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 10:34:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 10:34:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 10:34:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 10:34:20,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-22 10:34:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:34:20,105 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 10:34:20,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:34:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 10:34:20,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 10:34:20,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:34:20,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:34:20 BasicIcfg [2020-12-22 10:34:20,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 10:34:20,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 10:34:20,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 10:34:20,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 10:34:20,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:34:15" (3/4) ... [2020-12-22 10:34:20,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 10:34:20,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-12-22 10:34:20,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-22 10:34:20,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-22 10:34:20,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 10:34:20,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 10:34:20,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 10:34:20,167 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-atomic/szymanski.i-witness.graphml [2020-12-22 10:34:20,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 10:34:20,169 INFO L168 Benchmark]: Toolchain (without parser) took 6166.68 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 126.8 MB in the beginning and 65.1 MB in the end (delta: 61.7 MB). Peak memory consumption was 96.3 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,169 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 10:34:20,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.27 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 128.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.85 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 126.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,171 INFO L168 Benchmark]: Boogie Preprocessor took 52.06 ms. Allocated memory is still 153.1 MB. Free memory was 126.8 MB in the beginning and 125.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,172 INFO L168 Benchmark]: RCFGBuilder took 503.60 ms. Allocated memory is still 153.1 MB. Free memory was 125.2 MB in the beginning and 100.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,173 INFO L168 Benchmark]: TraceAbstraction took 4700.97 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 99.5 MB in the beginning and 67.7 MB in the end (delta: 31.8 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,174 INFO L168 Benchmark]: Witness Printer took 56.48 ms. Allocated memory is still 186.6 MB. Free memory was 67.7 MB in the beginning and 65.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 10:34:20,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 784.27 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 128.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.85 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 126.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.06 ms. Allocated memory is still 153.1 MB. Free memory was 126.8 MB in the beginning and 125.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.60 ms. Allocated memory is still 153.1 MB. Free memory was 125.2 MB in the beginning and 100.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4700.97 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 99.5 MB in the beginning and 67.7 MB in the end (delta: 31.8 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. * Witness Printer took 56.48 ms. Allocated memory is still 186.6 MB. Free memory was 67.7 MB in the beginning and 65.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2114 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 51 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 361 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 94 PlacesBefore, 48 PlacesAfterwards, 109 TransitionsBefore, 53 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 10 ChoiceCompositions, 72 TotalNumberOfCompositions, 9414 MoverChecksTotal - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 346 SDtfs, 170 SDslu, 213 SDs, 0 SdLazy, 136 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=575occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 78 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...