/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 19:06:11,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 19:06:11,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 19:06:11,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 19:06:11,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 19:06:11,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 19:06:11,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 19:06:11,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 19:06:11,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 19:06:11,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 19:06:11,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 19:06:11,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 19:06:11,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 19:06:11,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 19:06:11,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 19:06:11,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 19:06:11,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 19:06:11,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 19:06:11,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 19:06:11,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 19:06:11,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 19:06:11,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 19:06:11,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 19:06:11,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 19:06:11,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 19:06:11,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 19:06:11,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 19:06:11,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 19:06:11,301 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-SemanticLbe.epf [2021-03-11 19:06:11,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 19:06:11,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 19:06:11,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 19:06:11,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 19:06:11,337 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 19:06:11,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 19:06:11,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 19:06:11,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 19:06:11,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 19:06:11,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 19:06:11,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 19:06:11,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 19:06:11,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 19:06:11,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 19:06:11,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 19:06:11,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:06:11,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 19:06:11,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 19:06:11,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 19:06:11,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 19:06:11,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 19:06:11,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 19:06:11,652 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 19:06:11,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-03-11 19:06:11,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9a1931d/11bda1d9c77f427b8f4f79feeba710d6/FLAG9fe3a7628 [2021-03-11 19:06:12,158 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 19:06:12,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-03-11 19:06:12,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9a1931d/11bda1d9c77f427b8f4f79feeba710d6/FLAG9fe3a7628 [2021-03-11 19:06:12,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9a1931d/11bda1d9c77f427b8f4f79feeba710d6 [2021-03-11 19:06:12,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 19:06:12,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 19:06:12,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 19:06:12,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 19:06:12,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 19:06:12,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:06:12" (1/1) ... [2021-03-11 19:06:12,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d166cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:12, skipping insertion in model container [2021-03-11 19:06:12,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:06:12" (1/1) ... [2021-03-11 19:06:12,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 19:06:12,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 19:06:12,672 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:06:12,868 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-03-11 19:06:12,878 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-03-11 19:06:12,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:06:12,891 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 19:06:12,910 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:06:12,935 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-03-11 19:06:12,946 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-03-11 19:06:12,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:06:13,023 INFO L208 MainTranslator]: Completed translation [2021-03-11 19:06:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13 WrapperNode [2021-03-11 19:06:13,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 19:06:13,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 19:06:13,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 19:06:13,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 19:06:13,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 19:06:13,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 19:06:13,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 19:06:13,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 19:06:13,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... [2021-03-11 19:06:13,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 19:06:13,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 19:06:13,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 19:06:13,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 19:06:13,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 19:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-11 19:06:13,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-11 19:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 19:06:13,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 19:06:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 19:06:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 19:06:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 19:06:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 19:06:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 19:06:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 19:06:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 19:06:13,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 19:06:13,208 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 19:06:13,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 19:06:13,555 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-03-11 19:06:13,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:06:13 BoogieIcfgContainer [2021-03-11 19:06:13,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 19:06:13,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 19:06:13,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 19:06:13,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 19:06:13,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 07:06:12" (1/3) ... [2021-03-11 19:06:13,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc6a8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:06:13, skipping insertion in model container [2021-03-11 19:06:13,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:06:13" (2/3) ... [2021-03-11 19:06:13,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc6a8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:06:13, skipping insertion in model container [2021-03-11 19:06:13,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:06:13" (3/3) ... [2021-03-11 19:06:13,563 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-03-11 19:06:13,567 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 19:06:13,571 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 19:06:13,571 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 19:06:13,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,598 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,599 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,600 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,601 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,602 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,608 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,609 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,610 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,614 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,614 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,618 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,618 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,619 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:06:13,624 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 19:06:13,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 19:06:13,667 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 19:06:13,667 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 19:06:13,667 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 19:06:13,667 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 19:06:13,667 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 19:06:13,668 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 19:06:13,668 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 19:06:13,668 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 19:06:13,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 109 transitions, 240 flow [2021-03-11 19:06:13,725 INFO L129 PetriNetUnfolder]: 21/109 cut-off events. [2021-03-11 19:06:13,725 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 19:06:13,731 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 160 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. [2021-03-11 19:06:13,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 109 transitions, 240 flow [2021-03-11 19:06:13,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 97 transitions, 206 flow [2021-03-11 19:06:13,738 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 19:06:13,746 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 97 transitions, 206 flow [2021-03-11 19:06:13,749 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 97 transitions, 206 flow [2021-03-11 19:06:13,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 97 transitions, 206 flow [2021-03-11 19:06:13,767 INFO L129 PetriNetUnfolder]: 20/99 cut-off events. [2021-03-11 19:06:13,768 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 19:06:13,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 20/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2021-03-11 19:06:13,772 INFO L116 LiptonReduction]: Number of co-enabled transitions 3528 [2021-03-11 19:06:15,865 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 19:06:16,093 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-03-11 19:06:16,167 INFO L131 LiptonReduction]: Checked pairs total: 8436 [2021-03-11 19:06:16,167 INFO L133 LiptonReduction]: Total number of compositions: 66 [2021-03-11 19:06:16,168 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2432 [2021-03-11 19:06:16,178 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-03-11 19:06:16,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:06:16,178 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:06:16,179 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:06:16,179 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:06:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:06:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash 404711994, now seen corresponding path program 1 times [2021-03-11 19:06:16,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:06:16,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347950570] [2021-03-11 19:06:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:06:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:06:16,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:06:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:06:16,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347950570] [2021-03-11 19:06:16,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:06:16,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:06:16,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697348112] [2021-03-11 19:06:16,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:06:16,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:06:16,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:06:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:06:16,348 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 175 [2021-03-11 19:06:16,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:06:16,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 175 [2021-03-11 19:06:16,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:06:16,384 INFO L129 PetriNetUnfolder]: 18/96 cut-off events. [2021-03-11 19:06:16,385 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-11 19:06:16,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 96 events. 18/96 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 324 event pairs, 1 based on Foata normal form. 4/78 useless extension candidates. Maximal degree in co-relation 110. Up to 14 conditions per place. [2021-03-11 19:06:16,387 INFO L132 encePairwiseOnDemand]: 169/175 looper letters, 5 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2021-03-11 19:06:16,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 132 flow [2021-03-11 19:06:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:06:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:06:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2021-03-11 19:06:16,398 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-03-11 19:06:16,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2021-03-11 19:06:16,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2021-03-11 19:06:16,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:06:16,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2021-03-11 19:06:16,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,418 INFO L185 Difference]: Start difference. First operand has 43 places, 47 transitions, 106 flow. Second operand 3 states and 413 transitions. [2021-03-11 19:06:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 132 flow [2021-03-11 19:06:16,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 19:06:16,424 INFO L241 Difference]: Finished difference. Result has 43 places, 49 transitions, 128 flow [2021-03-11 19:06:16,425 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=49} [2021-03-11 19:06:16,426 INFO L335 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2021-03-11 19:06:16,426 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 128 flow [2021-03-11 19:06:16,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,426 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:06:16,426 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:06:16,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 19:06:16,427 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:06:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:06:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2139767348, now seen corresponding path program 1 times [2021-03-11 19:06:16,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:06:16,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607679171] [2021-03-11 19:06:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:06:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:06:16,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:06:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:06:16,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607679171] [2021-03-11 19:06:16,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:06:16,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:06:16,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470082057] [2021-03-11 19:06:16,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:06:16,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:06:16,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:06:16,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:06:16,514 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 175 [2021-03-11 19:06:16,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 49 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:06:16,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 175 [2021-03-11 19:06:16,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:06:16,534 INFO L129 PetriNetUnfolder]: 14/83 cut-off events. [2021-03-11 19:06:16,535 INFO L130 PetriNetUnfolder]: For 10/16 co-relation queries the response was YES. [2021-03-11 19:06:16,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 83 events. 14/83 cut-off events. For 10/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 255 event pairs, 0 based on Foata normal form. 4/67 useless extension candidates. Maximal degree in co-relation 100. Up to 10 conditions per place. [2021-03-11 19:06:16,536 INFO L132 encePairwiseOnDemand]: 170/175 looper letters, 5 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2021-03-11 19:06:16,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 146 flow [2021-03-11 19:06:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:06:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:06:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2021-03-11 19:06:16,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7847619047619048 [2021-03-11 19:06:16,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2021-03-11 19:06:16,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2021-03-11 19:06:16,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:06:16,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2021-03-11 19:06:16,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,542 INFO L185 Difference]: Start difference. First operand has 43 places, 49 transitions, 128 flow. Second operand 3 states and 412 transitions. [2021-03-11 19:06:16,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 146 flow [2021-03-11 19:06:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:06:16,544 INFO L241 Difference]: Finished difference. Result has 44 places, 49 transitions, 132 flow [2021-03-11 19:06:16,544 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=49} [2021-03-11 19:06:16,545 INFO L335 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2021-03-11 19:06:16,545 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 49 transitions, 132 flow [2021-03-11 19:06:16,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:06:16,546 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:06:16,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 19:06:16,546 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:06:16,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:06:16,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2019250682, now seen corresponding path program 1 times [2021-03-11 19:06:16,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:06:16,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520469667] [2021-03-11 19:06:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:06:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:06:16,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:06:16,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:06:16,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:06:16,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520469667] [2021-03-11 19:06:16,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:06:16,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 19:06:16,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414233486] [2021-03-11 19:06:16,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:06:16,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:06:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:06:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:06:16,614 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 175 [2021-03-11 19:06:16,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:06:16,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 175 [2021-03-11 19:06:16,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:06:16,740 INFO L129 PetriNetUnfolder]: 137/382 cut-off events. [2021-03-11 19:06:16,740 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-11 19:06:16,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 382 events. 137/382 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1888 event pairs, 42 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 562. Up to 138 conditions per place. [2021-03-11 19:06:16,745 INFO L132 encePairwiseOnDemand]: 158/175 looper letters, 25 selfloop transitions, 7 changer transitions 23/80 dead transitions. [2021-03-11 19:06:16,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 313 flow [2021-03-11 19:06:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 19:06:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 19:06:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2021-03-11 19:06:16,749 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2021-03-11 19:06:16,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 565 transitions. [2021-03-11 19:06:16,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 565 transitions. [2021-03-11 19:06:16,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:06:16,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 565 transitions. [2021-03-11 19:06:16,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,755 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,755 INFO L185 Difference]: Start difference. First operand has 44 places, 49 transitions, 132 flow. Second operand 5 states and 565 transitions. [2021-03-11 19:06:16,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 313 flow [2021-03-11 19:06:16,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 19:06:16,760 INFO L241 Difference]: Finished difference. Result has 50 places, 51 transitions, 199 flow [2021-03-11 19:06:16,760 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2021-03-11 19:06:16,761 INFO L335 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2021-03-11 19:06:16,761 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 199 flow [2021-03-11 19:06:16,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,761 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:06:16,761 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:06:16,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 19:06:16,762 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:06:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:06:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash 570817516, now seen corresponding path program 1 times [2021-03-11 19:06:16,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:06:16,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493408404] [2021-03-11 19:06:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:06:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:06:16,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:06:16,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:06:16,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493408404] [2021-03-11 19:06:16,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:06:16,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 19:06:16,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238137582] [2021-03-11 19:06:16,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:06:16,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:06:16,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:06:16,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:06:16,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 175 [2021-03-11 19:06:16,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:06:16,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 175 [2021-03-11 19:06:16,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:06:16,888 INFO L129 PetriNetUnfolder]: 87/232 cut-off events. [2021-03-11 19:06:16,888 INFO L130 PetriNetUnfolder]: For 77/84 co-relation queries the response was YES. [2021-03-11 19:06:16,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 232 events. 87/232 cut-off events. For 77/84 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 951 event pairs, 28 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 466. Up to 105 conditions per place. [2021-03-11 19:06:16,891 INFO L132 encePairwiseOnDemand]: 172/175 looper letters, 20 selfloop transitions, 2 changer transitions 2/58 dead transitions. [2021-03-11 19:06:16,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 261 flow [2021-03-11 19:06:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:06:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:06:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2021-03-11 19:06:16,893 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7504761904761905 [2021-03-11 19:06:16,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2021-03-11 19:06:16,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2021-03-11 19:06:16,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:06:16,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2021-03-11 19:06:16,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,897 INFO L185 Difference]: Start difference. First operand has 50 places, 51 transitions, 199 flow. Second operand 3 states and 394 transitions. [2021-03-11 19:06:16,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 261 flow [2021-03-11 19:06:16,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 243 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-03-11 19:06:16,901 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 189 flow [2021-03-11 19:06:16,901 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2021-03-11 19:06:16,901 INFO L335 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2021-03-11 19:06:16,901 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 189 flow [2021-03-11 19:06:16,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,904 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:06:16,905 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:06:16,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 19:06:16,906 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:06:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:06:16,911 INFO L82 PathProgramCache]: Analyzing trace with hash 893351726, now seen corresponding path program 2 times [2021-03-11 19:06:16,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:06:16,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264129923] [2021-03-11 19:06:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:06:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:06:16,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:06:16,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:06:16,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:06:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:06:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:06:16,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264129923] [2021-03-11 19:06:16,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:06:16,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 19:06:16,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946593691] [2021-03-11 19:06:16,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:06:16,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:06:16,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:06:16,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:06:16,969 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 175 [2021-03-11 19:06:16,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:16,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:06:16,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 175 [2021-03-11 19:06:16,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:06:17,068 INFO L129 PetriNetUnfolder]: 120/309 cut-off events. [2021-03-11 19:06:17,069 INFO L130 PetriNetUnfolder]: For 145/152 co-relation queries the response was YES. [2021-03-11 19:06:17,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 309 events. 120/309 cut-off events. For 145/152 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1459 event pairs, 29 based on Foata normal form. 13/294 useless extension candidates. Maximal degree in co-relation 678. Up to 128 conditions per place. [2021-03-11 19:06:17,071 INFO L132 encePairwiseOnDemand]: 159/175 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2021-03-11 19:06:17,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 350 flow [2021-03-11 19:06:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 19:06:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 19:06:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2021-03-11 19:06:17,073 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6445714285714286 [2021-03-11 19:06:17,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2021-03-11 19:06:17,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2021-03-11 19:06:17,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:06:17,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2021-03-11 19:06:17,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:17,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:17,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:17,077 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 189 flow. Second operand 5 states and 564 transitions. [2021-03-11 19:06:17,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 350 flow [2021-03-11 19:06:17,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 333 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 19:06:17,081 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-03-11 19:06:17,081 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-03-11 19:06:17,081 INFO L335 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2021-03-11 19:06:17,081 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2021-03-11 19:06:17,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 19:06:17,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 19:06:17,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 07:06:17 BasicIcfg [2021-03-11 19:06:17,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 19:06:17,090 INFO L168 Benchmark]: Toolchain (without parser) took 4603.31 ms. Allocated memory was 255.9 MB in the beginning and 440.4 MB in the end (delta: 184.5 MB). Free memory was 233.0 MB in the beginning and 215.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 201.5 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,091 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:06:17,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.94 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.5 MB in the beginning and 330.0 MB in the end (delta: -97.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.08 ms. Allocated memory is still 367.0 MB. Free memory was 330.0 MB in the beginning and 328.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,092 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 326.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,093 INFO L168 Benchmark]: RCFGBuilder took 433.93 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 302.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,095 INFO L168 Benchmark]: TraceAbstraction took 3526.74 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 301.6 MB in the beginning and 215.5 MB in the end (delta: 86.2 MB). Peak memory consumption was 159.0 MB. Max. memory is 16.0 GB. [2021-03-11 19:06:17,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 532.94 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.5 MB in the beginning and 330.0 MB in the end (delta: -97.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.08 ms. Allocated memory is still 367.0 MB. Free memory was 330.0 MB in the beginning and 328.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 326.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 433.93 ms. Allocated memory is still 367.0 MB. Free memory was 326.8 MB in the beginning and 302.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3526.74 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 301.6 MB in the beginning and 215.5 MB in the end (delta: 86.2 MB). Peak memory consumption was 159.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2418.2ms, 83 PlacesBefore, 43 PlacesAfterwards, 97 TransitionsBefore, 47 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 10 ChoiceCompositions, 66 TotalNumberOfCompositions, 8436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4035, positive: 3812, positive conditional: 0, positive unconditional: 3812, negative: 223, negative conditional: 0, negative unconditional: 223, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2081, positive: 2029, positive conditional: 0, positive unconditional: 2029, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2081, positive: 2023, positive conditional: 0, positive unconditional: 2023, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 140, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4035, positive: 1783, positive conditional: 0, positive unconditional: 1783, negative: 171, negative conditional: 0, negative unconditional: 171, unknown: 2081, unknown conditional: 0, unknown unconditional: 2081] , Statistics on independence cache: Total cache size (in pairs): 326, Positive cache size: 289, Positive conditional cache size: 0, Positive unconditional cache size: 289, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37 - 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. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3430.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 465.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2504.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 47 SDslu, 27 SDs, 0 SdLazy, 152 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 131.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=3, InterpolantAutomatonStates: 19, 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: 13.5ms SsaConstructionTime, 59.3ms SatisfiabilityAnalysisTime, 202.6ms InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...