/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/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 18:32:28,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 18:32:28,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 18:32:28,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 18:32:28,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 18:32:28,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 18:32:28,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 18:32:28,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 18:32:28,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 18:32:28,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 18:32:28,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 18:32:28,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 18:32:28,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 18:32:28,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 18:32:28,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 18:32:28,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 18:32:28,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 18:32:28,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 18:32:28,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 18:32:28,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 18:32:28,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 18:32:28,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 18:32:28,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 18:32:28,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 18:32:28,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 18:32:28,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 18:32:28,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 18:32:28,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 18:32:28,960 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 [2021-03-24 18:32:28,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 18:32:28,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 18:32:28,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 18:32:28,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 18:32:28,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 18:32:28,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 18:32:28,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 18:32:28,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 18:32:28,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 18:32:28,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 18:32:28,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 18:32:29,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 18:32:29,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 18:32:29,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 18:32:29,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 18:32:29,234 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 18:32:29,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-24 18:32:29,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633f17b5/ae35010b7b844fa48cf9ad115941a2c1/FLAG4ac096ad6 [2021-03-24 18:32:29,695 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 18:32:29,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-24 18:32:29,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633f17b5/ae35010b7b844fa48cf9ad115941a2c1/FLAG4ac096ad6 [2021-03-24 18:32:29,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633f17b5/ae35010b7b844fa48cf9ad115941a2c1 [2021-03-24 18:32:29,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 18:32:29,718 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 18:32:29,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 18:32:29,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 18:32:29,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 18:32:29,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:32:29" (1/1) ... [2021-03-24 18:32:29,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8853f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:29, skipping insertion in model container [2021-03-24 18:32:29,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:32:29" (1/1) ... [2021-03-24 18:32:29,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 18:32:29,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 18:32:29,837 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 18:32:29,970 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/peterson.i[30997,31010] [2021-03-24 18:32:29,974 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/peterson.i[31682,31695] [2021-03-24 18:32:29,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:32:29,981 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 18:32:29,999 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 18:32:30,012 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/peterson.i[30997,31010] [2021-03-24 18:32:30,013 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/peterson.i[31682,31695] [2021-03-24 18:32:30,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:32:30,051 INFO L208 MainTranslator]: Completed translation [2021-03-24 18:32:30,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30 WrapperNode [2021-03-24 18:32:30,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 18:32:30,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 18:32:30,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 18:32:30,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 18:32:30,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 18:32:30,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 18:32:30,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 18:32:30,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 18:32:30,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (1/1) ... [2021-03-24 18:32:30,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 18:32:30,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 18:32:30,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 18:32:30,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 18:32:30,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (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 [2021-03-24 18:32:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 18:32:30,144 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-24 18:32:30,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-24 18:32:30,145 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 18:32:30,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 18:32:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 18:32:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 18:32:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 18:32:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 18:32:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 18:32:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 18:32:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 18:32:30,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 18:32:30,151 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 18:32:30,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 18:32:30,367 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-24 18:32:30,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:32:30 BoogieIcfgContainer [2021-03-24 18:32:30,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 18:32:30,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 18:32:30,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 18:32:30,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 18:32:30,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 06:32:29" (1/3) ... [2021-03-24 18:32:30,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25557cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:32:30, skipping insertion in model container [2021-03-24 18:32:30,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:32:30" (2/3) ... [2021-03-24 18:32:30,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25557cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:32:30, skipping insertion in model container [2021-03-24 18:32:30,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:32:30" (3/3) ... [2021-03-24 18:32:30,373 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-03-24 18:32:30,376 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 18:32:30,379 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 18:32:30,379 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 18:32:30,398 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,398 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,401 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,405 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,406 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,407 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,416 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,417 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,417 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,417 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:32:30,427 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 18:32:30,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 18:32:30,462 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 18:32:30,462 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 18:32:30,462 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 18:32:30,462 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 18:32:30,462 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 18:32:30,462 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 18:32:30,462 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 18:32:30,462 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 18:32:30,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-03-24 18:32:30,508 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-03-24 18:32:30,508 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:32:30,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2021-03-24 18:32:30,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 170 flow [2021-03-24 18:32:30,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 62 transitions, 136 flow [2021-03-24 18:32:30,524 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 18:32:30,537 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-24 18:32:30,540 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-24 18:32:30,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 62 transitions, 136 flow [2021-03-24 18:32:30,559 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-03-24 18:32:30,559 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 18:32:30,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-03-24 18:32:30,562 INFO L142 LiptonReduction]: Number of co-enabled transitions 1116 [2021-03-24 18:32:31,506 INFO L154 LiptonReduction]: Checked pairs total: 1435 [2021-03-24 18:32:31,507 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-24 18:32:31,508 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 985 [2021-03-24 18:32:31,525 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-24 18:32:31,525 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:32:31,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:32:31,525 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:32:31,526 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:32:31,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:32:31,529 INFO L82 PathProgramCache]: Analyzing trace with hash -528344222, now seen corresponding path program 1 times [2021-03-24 18:32:31,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:32:31,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994729665] [2021-03-24 18:32:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:32:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:32:31,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:31,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:32:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:32:31,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994729665] [2021-03-24 18:32:31,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:32:31,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 18:32:31,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838419468] [2021-03-24 18:32:31,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:32:31,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:32:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:32:31,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:32:31,644 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 108 [2021-03-24 18:32:31,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-24 18:32:31,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:32:31,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 108 [2021-03-24 18:32:31,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:32:31,680 INFO L129 PetriNetUnfolder]: 9/69 cut-off events. [2021-03-24 18:32:31,680 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 18:32:31,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 69 events. 9/69 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 2 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 89. Up to 18 conditions per place. [2021-03-24 18:32:31,682 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 7 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2021-03-24 18:32:31,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 102 flow [2021-03-24 18:32:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:32:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:32:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2021-03-24 18:32:31,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2021-03-24 18:32:31,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2021-03-24 18:32:31,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2021-03-24 18:32:31,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:32:31,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2021-03-24 18:32:31,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2021-03-24 18:32:31,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-24 18:32:31,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-24 18:32:31,711 INFO L185 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 261 transitions. [2021-03-24 18:32:31,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 102 flow [2021-03-24 18:32:31,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 18:32:31,714 INFO L241 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2021-03-24 18:32:31,715 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2021-03-24 18:32:31,716 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-03-24 18:32:31,716 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2021-03-24 18:32:31,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-24 18:32:31,717 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:32:31,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:32:31,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 18:32:31,717 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:32:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:32:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash 836917484, now seen corresponding path program 1 times [2021-03-24 18:32:31,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:32:31,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052180950] [2021-03-24 18:32:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:32:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:32:31,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:31,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 18:32:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:32:31,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052180950] [2021-03-24 18:32:31,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:32:31,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 18:32:31,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938184499] [2021-03-24 18:32:31,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:32:31,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:32:31,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:32:31,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:32:31,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 108 [2021-03-24 18:32:31,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-24 18:32:31,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:32:31,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 108 [2021-03-24 18:32:31,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:32:31,800 INFO L129 PetriNetUnfolder]: 4/57 cut-off events. [2021-03-24 18:32:31,800 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-03-24 18:32:31,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 57 events. 4/57 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 2 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2021-03-24 18:32:31,800 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 6 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2021-03-24 18:32:31,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 104 flow [2021-03-24 18:32:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:32:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:32:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-03-24 18:32:31,801 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7993827160493827 [2021-03-24 18:32:31,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-03-24 18:32:31,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-03-24 18:32:31,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:32:31,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-03-24 18:32:31,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2021-03-24 18:32:31,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-24 18:32:31,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-24 18:32:31,803 INFO L185 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 3 states and 259 transitions. [2021-03-24 18:32:31,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 104 flow [2021-03-24 18:32:31,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 18:32:31,804 INFO L241 Difference]: Finished difference. Result has 37 places, 33 transitions, 92 flow [2021-03-24 18:32:31,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2021-03-24 18:32:31,805 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2021-03-24 18:32:31,805 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 92 flow [2021-03-24 18:32:31,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-24 18:32:31,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:32:31,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:32:31,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 18:32:31,805 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:32:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:32:31,806 INFO L82 PathProgramCache]: Analyzing trace with hash 167294588, now seen corresponding path program 1 times [2021-03-24 18:32:31,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:32:31,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990368064] [2021-03-24 18:32:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:32:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:32:31,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:31,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:32:31,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:31,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:31,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:31,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:31,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:32:31,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990368064] [2021-03-24 18:32:31,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:32:31,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 18:32:31,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939142890] [2021-03-24 18:32:31,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 18:32:31,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:32:31,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 18:32:31,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 18:32:31,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2021-03-24 18:32:31,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-03-24 18:32:31,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:32:31,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2021-03-24 18:32:31,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:32:32,014 INFO L129 PetriNetUnfolder]: 70/228 cut-off events. [2021-03-24 18:32:32,014 INFO L130 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2021-03-24 18:32:32,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 228 events. 70/228 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1090 event pairs, 7 based on Foata normal form. 10/237 useless extension candidates. Maximal degree in co-relation 350. Up to 50 conditions per place. [2021-03-24 18:32:32,017 INFO L132 encePairwiseOnDemand]: 98/108 looper letters, 24 selfloop transitions, 13 changer transitions 16/71 dead transitions. [2021-03-24 18:32:32,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 280 flow [2021-03-24 18:32:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 18:32:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 18:32:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2021-03-24 18:32:32,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7472222222222222 [2021-03-24 18:32:32,019 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2021-03-24 18:32:32,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2021-03-24 18:32:32,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:32:32,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2021-03-24 18:32:32,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 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) [2021-03-24 18:32:32,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2021-03-24 18:32:32,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2021-03-24 18:32:32,024 INFO L185 Difference]: Start difference. First operand has 37 places, 33 transitions, 92 flow. Second operand 10 states and 807 transitions. [2021-03-24 18:32:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 280 flow [2021-03-24 18:32:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 18:32:32,027 INFO L241 Difference]: Finished difference. Result has 54 places, 45 transitions, 198 flow [2021-03-24 18:32:32,028 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2021-03-24 18:32:32,028 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2021-03-24 18:32:32,028 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 198 flow [2021-03-24 18:32:32,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2021-03-24 18:32:32,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:32:32,028 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:32:32,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 18:32:32,029 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:32:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:32:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1726966534, now seen corresponding path program 2 times [2021-03-24 18:32:32,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:32:32,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271815745] [2021-03-24 18:32:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:32:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:32:32,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:32,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:32:32,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:32,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:32,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:32:32,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:32:32,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:32:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 18:32:32,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271815745] [2021-03-24 18:32:32,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:32:32,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 18:32:32,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105911435] [2021-03-24 18:32:32,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 18:32:32,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:32:32,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 18:32:32,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 18:32:32,101 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2021-03-24 18:32:32,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2021-03-24 18:32:32,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:32:32,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2021-03-24 18:32:32,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:32:32,198 INFO L129 PetriNetUnfolder]: 81/230 cut-off events. [2021-03-24 18:32:32,198 INFO L130 PetriNetUnfolder]: For 228/250 co-relation queries the response was YES. [2021-03-24 18:32:32,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 230 events. 81/230 cut-off events. For 228/250 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1035 event pairs, 0 based on Foata normal form. 18/247 useless extension candidates. Maximal degree in co-relation 606. Up to 48 conditions per place. [2021-03-24 18:32:32,200 INFO L132 encePairwiseOnDemand]: 98/108 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-03-24 18:32:32,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 446 flow [2021-03-24 18:32:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 18:32:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 18:32:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 831 transitions. [2021-03-24 18:32:32,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7694444444444445 [2021-03-24 18:32:32,201 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 831 transitions. [2021-03-24 18:32:32,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 831 transitions. [2021-03-24 18:32:32,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:32:32,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 831 transitions. [2021-03-24 18:32:32,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.1) internal successors, (831), 10 states have internal predecessors, (831), 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) [2021-03-24 18:32:32,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2021-03-24 18:32:32,205 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2021-03-24 18:32:32,205 INFO L185 Difference]: Start difference. First operand has 54 places, 45 transitions, 198 flow. Second operand 10 states and 831 transitions. [2021-03-24 18:32:32,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 446 flow [2021-03-24 18:32:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 418 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-03-24 18:32:32,211 INFO L241 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2021-03-24 18:32:32,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2021-03-24 18:32:32,211 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2021-03-24 18:32:32,211 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2021-03-24 18:32:32,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2021-03-24 18:32:32,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 18:32:32,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 06:32:32 BasicIcfg [2021-03-24 18:32:32,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 18:32:32,215 INFO L168 Benchmark]: Toolchain (without parser) took 2495.69 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 233.0 MB in the beginning and 222.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 131.7 MB. Max. memory is 16.0 GB. [2021-03-24 18:32:32,218 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 18:32:32,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.97 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 233.0 MB in the beginning and 341.5 MB in the end (delta: -108.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 18:32:32,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.48 ms. Allocated memory is still 377.5 MB. Free memory was 341.0 MB in the beginning and 339.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:32:32,219 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 377.5 MB. Free memory was 339.4 MB in the beginning and 337.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 18:32:32,220 INFO L168 Benchmark]: RCFGBuilder took 269.53 ms. Allocated memory is still 377.5 MB. Free memory was 337.8 MB in the beginning and 316.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-24 18:32:32,220 INFO L168 Benchmark]: TraceAbstraction took 1844.29 ms. Allocated memory is still 377.5 MB. Free memory was 316.3 MB in the beginning and 222.3 MB in the end (delta: 94.0 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.0 GB. [2021-03-24 18:32:32,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 332.97 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 233.0 MB in the beginning and 341.5 MB in the end (delta: -108.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.48 ms. Allocated memory is still 377.5 MB. Free memory was 341.0 MB in the beginning and 339.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 377.5 MB. Free memory was 339.4 MB in the beginning and 337.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 269.53 ms. Allocated memory is still 377.5 MB. Free memory was 337.8 MB in the beginning and 316.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1844.29 ms. Allocated memory is still 377.5 MB. Free memory was 316.3 MB in the beginning and 222.3 MB in the end (delta: 94.0 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 967.1ms, 62 PlacesBefore, 36 PlacesAfterwards, 62 TransitionsBefore, 32 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 34 TotalNumberOfCompositions, 1435 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 851, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 553, positive: 525, positive conditional: 0, positive unconditional: 525, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 851, positive: 267, positive conditional: 0, positive unconditional: 267, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 553, unknown conditional: 0, unknown unconditional: 553] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1753.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 369.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1051.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 59 SDslu, 54 SDs, 0 SdLazy, 188 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.1ms SsaConstructionTime, 34.3ms SatisfiabilityAnalysisTime, 170.2ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...