/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:31:49,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:31:49,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:31:49,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:31:49,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:31:49,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:31:49,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:31:49,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:31:49,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:31:49,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:31:49,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:31:49,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:31:49,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:31:49,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:31:49,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:31:49,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:31:49,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:31:49,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:31:49,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:31:49,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:31:49,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:31:49,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:31:49,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:31:49,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:31:49,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 10:31:49,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 10:31:49,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 10:31:49,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 10:31:49,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 10:31:49,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 10:31:49,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 10:31:49,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 10:31:49,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 10:31:49,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:31:49,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:31:49,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:31:49,992 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-VariableLbe.epf [2021-03-24 10:31:50,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:31:50,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:31:50,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:31:50,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:31:50,025 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:31:50,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:31:50,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:31:50,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:31:50,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:31:50,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:31:50,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:31:50,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:31:50,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:31:50,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:31:50,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:31:50,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:31:50,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:31:50,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:31:50,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:31:50,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:31:50,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:31:50,258 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:31:50,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2021-03-24 10:31:50,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3c54a22/cb8459f3e2d74b41966b09871600d46f/FLAG4f4754764 [2021-03-24 10:31:50,719 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:31:50,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2021-03-24 10:31:50,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3c54a22/cb8459f3e2d74b41966b09871600d46f/FLAG4f4754764 [2021-03-24 10:31:50,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3c54a22/cb8459f3e2d74b41966b09871600d46f [2021-03-24 10:31:50,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:31:50,739 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:31:50,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:31:50,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:31:50,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:31:50,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:31:50" (1/1) ... [2021-03-24 10:31:50,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368d3fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:50, skipping insertion in model container [2021-03-24 10:31:50,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:31:50" (1/1) ... [2021-03-24 10:31:50,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:31:50,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:31:50,894 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 10:31:50,962 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-ext/46_monabsex2_vs.i[30503,30516] [2021-03-24 10:31:50,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:31:50,976 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:31:50,999 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-24 10:31:51,011 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-ext/46_monabsex2_vs.i[30503,30516] [2021-03-24 10:31:51,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:31:51,052 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:31:51,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51 WrapperNode [2021-03-24 10:31:51,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:31:51,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:31:51,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:31:51,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:31:51,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:31:51,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:31:51,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:31:51,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:31:51,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (1/1) ... [2021-03-24 10:31:51,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:31:51,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:31:51,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:31:51,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:31:51,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (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 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 10:31:51,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:31:51,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 10:31:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:31:51,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:31:51,133 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 10:31:51,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:31:51,351 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-24 10:31:51,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:31:51 BoogieIcfgContainer [2021-03-24 10:31:51,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:31:51,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:31:51,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:31:51,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:31:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:31:50" (1/3) ... [2021-03-24 10:31:51,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563b15f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:31:51, skipping insertion in model container [2021-03-24 10:31:51,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:31:51" (2/3) ... [2021-03-24 10:31:51,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563b15f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:31:51, skipping insertion in model container [2021-03-24 10:31:51,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:31:51" (3/3) ... [2021-03-24 10:31:51,357 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2021-03-24 10:31:51,360 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:31:51,363 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 10:31:51,363 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:31:51,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:51,384 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:51,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 10:31:51,408 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:51,408 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:51,408 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:51,408 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:51,408 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:51,408 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:51,408 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:51,408 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:51,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,428 INFO L129 PetriNetUnfolder]: 2/38 cut-off events. [2021-03-24 10:31:51,428 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:51,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2021-03-24 10:31:51,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,433 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:51,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,441 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 65 flow [2021-03-24 10:31:51,448 INFO L129 PetriNetUnfolder]: 2/38 cut-off events. [2021-03-24 10:31:51,448 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:51,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2021-03-24 10:31:51,449 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-24 10:31:52,460 INFO L154 LiptonReduction]: Checked pairs total: 63 [2021-03-24 10:31:52,460 INFO L156 LiptonReduction]: Total number of compositions: 20 [2021-03-24 10:31:52,462 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1030 [2021-03-24 10:31:52,466 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 10:31:52,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:52,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:52,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:52,466 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:52,475 INFO L82 PathProgramCache]: Analyzing trace with hash 131104392, now seen corresponding path program 1 times [2021-03-24 10:31:52,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:52,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791795420] [2021-03-24 10:31:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:52,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:52,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:52,601 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 10:31:52,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791795420] [2021-03-24 10:31:52,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:52,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078245204] [2021-03-24 10:31:52,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:52,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:52,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:52,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:52,615 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 50 [2021-03-24 10:31:52,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 10:31:52,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:52,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 50 [2021-03-24 10:31:52,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:52,628 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-24 10:31:52,628 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:52,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 10:31:52,629 INFO L132 encePairwiseOnDemand]: 46/50 looper letters, 1 selfloop transitions, 2 changer transitions 0/8 dead transitions. [2021-03-24 10:31:52,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 27 flow [2021-03-24 10:31:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2021-03-24 10:31:52,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.72 [2021-03-24 10:31:52,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2021-03-24 10:31:52,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2021-03-24 10:31:52,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:52,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2021-03-24 10:31:52,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 10:31:52,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 10:31:52,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 10:31:52,643 INFO L185 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 3 states and 108 transitions. [2021-03-24 10:31:52,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 27 flow [2021-03-24 10:31:52,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 10:31:52,645 INFO L241 Difference]: Finished difference. Result has 13 places, 8 transitions, 25 flow [2021-03-24 10:31:52,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2021-03-24 10:31:52,647 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -1 predicate places. [2021-03-24 10:31:52,647 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 25 flow [2021-03-24 10:31:52,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 10:31:52,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:52,647 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2021-03-24 10:31:52,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:31:52,648 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:52,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1604685753, now seen corresponding path program 1 times [2021-03-24 10:31:52,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:52,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795657141] [2021-03-24 10:31:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:52,663 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:52,672 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:52,682 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:31:52,682 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:31:52,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:31:52,683 WARN L342 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:31:52,684 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-03-24 10:31:52,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,689 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,689 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,690 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:52,694 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:52,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 10:31:52,696 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:52,696 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:52,696 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:52,696 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:52,696 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:52,696 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:52,696 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:52,697 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:52,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,703 INFO L129 PetriNetUnfolder]: 3/55 cut-off events. [2021-03-24 10:31:52,703 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 10:31:52,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 3/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-03-24 10:31:52,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,704 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:52,705 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 88 flow [2021-03-24 10:31:52,710 INFO L129 PetriNetUnfolder]: 3/55 cut-off events. [2021-03-24 10:31:52,710 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 10:31:52,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 3/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-03-24 10:31:52,710 INFO L142 LiptonReduction]: Number of co-enabled transitions 392 [2021-03-24 10:31:53,604 INFO L154 LiptonReduction]: Checked pairs total: 482 [2021-03-24 10:31:53,604 INFO L156 LiptonReduction]: Total number of compositions: 23 [2021-03-24 10:31:53,606 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 902 [2021-03-24 10:31:53,609 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 10:31:53,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:53,609 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:53,609 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:53,609 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 10:31:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:53,611 INFO L82 PathProgramCache]: Analyzing trace with hash 196613050, now seen corresponding path program 1 times [2021-03-24 10:31:53,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:53,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885608795] [2021-03-24 10:31:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:53,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:53,653 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 10:31:53,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885608795] [2021-03-24 10:31:53,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:53,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:53,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066885006] [2021-03-24 10:31:53,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:53,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:53,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:53,655 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 61 [2021-03-24 10:31:53,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 10:31:53,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:53,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 61 [2021-03-24 10:31:53,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:53,673 INFO L129 PetriNetUnfolder]: 4/29 cut-off events. [2021-03-24 10:31:53,673 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 10:31:53,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 29 events. 4/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 1 based on Foata normal form. 13/38 useless extension candidates. Maximal degree in co-relation 34. Up to 11 conditions per place. [2021-03-24 10:31:53,674 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 8 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-24 10:31:53,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 72 flow [2021-03-24 10:31:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-03-24 10:31:53,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-24 10:31:53,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-03-24 10:31:53,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-03-24 10:31:53,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:53,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-03-24 10:31:53,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 10:31:53,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 10:31:53,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 10:31:53,681 INFO L185 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 135 transitions. [2021-03-24 10:31:53,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 72 flow [2021-03-24 10:31:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 70 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-24 10:31:53,682 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 61 flow [2021-03-24 10:31:53,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2021-03-24 10:31:53,682 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2021-03-24 10:31:53,682 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 61 flow [2021-03-24 10:31:53,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 10:31:53,682 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:53,683 INFO L263 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2021-03-24 10:31:53,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:31:53,683 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 10:31:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1489545365, now seen corresponding path program 1 times [2021-03-24 10:31:53,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:53,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043701150] [2021-03-24 10:31:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:53,708 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:53,727 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:53,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:31:53,744 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:31:53,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:31:53,745 WARN L342 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:31:53,745 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-03-24 10:31:53,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,754 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,758 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,759 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,759 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:53,760 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:53,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 10:31:53,762 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:53,762 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:53,762 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:53,762 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:53,762 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:53,762 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:53,762 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:53,762 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:53,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,772 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2021-03-24 10:31:53,772 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 10:31:53,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 72 events. 4/72 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-24 10:31:53,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,773 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:53,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,774 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 113 flow [2021-03-24 10:31:53,778 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2021-03-24 10:31:53,778 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 10:31:53,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 72 events. 4/72 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-03-24 10:31:53,779 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-24 10:31:54,684 INFO L154 LiptonReduction]: Checked pairs total: 1089 [2021-03-24 10:31:54,684 INFO L156 LiptonReduction]: Total number of compositions: 27 [2021-03-24 10:31:54,684 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 911 [2021-03-24 10:31:54,686 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 10:31:54,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:54,686 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:54,686 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:54,686 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 10:31:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:54,686 INFO L82 PathProgramCache]: Analyzing trace with hash 273542573, now seen corresponding path program 1 times [2021-03-24 10:31:54,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:54,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581406300] [2021-03-24 10:31:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:54,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:54,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:54,708 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 10:31:54,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581406300] [2021-03-24 10:31:54,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:54,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:54,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722796328] [2021-03-24 10:31:54,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:54,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:54,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:54,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 73 [2021-03-24 10:31:54,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 10:31:54,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:54,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 73 [2021-03-24 10:31:54,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:54,738 INFO L129 PetriNetUnfolder]: 43/119 cut-off events. [2021-03-24 10:31:54,738 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 10:31:54,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 119 events. 43/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 500 event pairs, 19 based on Foata normal form. 49/136 useless extension candidates. Maximal degree in co-relation 193. Up to 76 conditions per place. [2021-03-24 10:31:54,739 INFO L132 encePairwiseOnDemand]: 65/73 looper letters, 12 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-24 10:31:54,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 105 flow [2021-03-24 10:31:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2021-03-24 10:31:54,741 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7123287671232876 [2021-03-24 10:31:54,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2021-03-24 10:31:54,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2021-03-24 10:31:54,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:54,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2021-03-24 10:31:54,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 10:31:54,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 10:31:54,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 10:31:54,742 INFO L185 Difference]: Start difference. First operand has 29 places, 22 transitions, 65 flow. Second operand 3 states and 156 transitions. [2021-03-24 10:31:54,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 105 flow [2021-03-24 10:31:54,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 99 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-24 10:31:54,743 INFO L241 Difference]: Finished difference. Result has 30 places, 23 transitions, 85 flow [2021-03-24 10:31:54,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2021-03-24 10:31:54,743 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2021-03-24 10:31:54,743 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 85 flow [2021-03-24 10:31:54,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 10:31:54,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:54,744 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:31:54,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:31:54,744 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 10:31:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1969579413, now seen corresponding path program 1 times [2021-03-24 10:31:54,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:54,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497333790] [2021-03-24 10:31:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:54,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:54,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:31:54,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:54,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:31:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:31:54,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497333790] [2021-03-24 10:31:54,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:54,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:31:54,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371464969] [2021-03-24 10:31:54,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:54,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:54,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 73 [2021-03-24 10:31:54,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 10:31:54,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:54,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 73 [2021-03-24 10:31:54,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:54,787 INFO L129 PetriNetUnfolder]: 38/108 cut-off events. [2021-03-24 10:31:54,787 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2021-03-24 10:31:54,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 108 events. 38/108 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 383 event pairs, 7 based on Foata normal form. 22/122 useless extension candidates. Maximal degree in co-relation 215. Up to 42 conditions per place. [2021-03-24 10:31:54,788 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 10 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2021-03-24 10:31:54,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 111 flow [2021-03-24 10:31:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2021-03-24 10:31:54,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2021-03-24 10:31:54,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2021-03-24 10:31:54,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2021-03-24 10:31:54,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:54,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2021-03-24 10:31:54,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 10:31:54,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 10:31:54,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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 10:31:54,791 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 85 flow. Second operand 3 states and 169 transitions. [2021-03-24 10:31:54,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 111 flow [2021-03-24 10:31:54,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:31:54,792 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 90 flow [2021-03-24 10:31:54,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-03-24 10:31:54,792 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2021-03-24 10:31:54,792 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 90 flow [2021-03-24 10:31:54,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 10:31:54,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:54,793 INFO L263 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2021-03-24 10:31:54,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 10:31:54,793 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 10:31:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:54,793 INFO L82 PathProgramCache]: Analyzing trace with hash 392081035, now seen corresponding path program 1 times [2021-03-24 10:31:54,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:54,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830931608] [2021-03-24 10:31:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:54,801 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:54,806 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:54,809 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:31:54,809 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:31:54,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 10:31:54,809 WARN L342 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:31:54,809 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:54,822 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:54,822 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 10:31:54,823 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:54,823 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:54,823 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:54,823 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:54,823 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:54,823 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:54,823 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:54,823 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:54,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,829 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2021-03-24 10:31:54,829 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 10:31:54,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 89 events. 5/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-03-24 10:31:54,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,830 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:54,830 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,830 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 140 flow [2021-03-24 10:31:54,834 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2021-03-24 10:31:54,834 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 10:31:54,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 89 events. 5/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-03-24 10:31:54,836 INFO L142 LiptonReduction]: Number of co-enabled transitions 1232 [2021-03-24 10:31:55,940 INFO L154 LiptonReduction]: Checked pairs total: 1723 [2021-03-24 10:31:55,940 INFO L156 LiptonReduction]: Total number of compositions: 31 [2021-03-24 10:31:55,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1111 [2021-03-24 10:31:55,942 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 10:31:55,942 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:55,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:55,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:55,942 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash 361923754, now seen corresponding path program 1 times [2021-03-24 10:31:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:55,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192699781] [2021-03-24 10:31:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:55,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:55,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:55,960 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 10:31:55,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192699781] [2021-03-24 10:31:55,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:55,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:55,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374609538] [2021-03-24 10:31:55,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:55,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:55,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:55,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:55,961 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2021-03-24 10:31:55,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 10:31:55,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:55,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2021-03-24 10:31:55,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:56,015 INFO L129 PetriNetUnfolder]: 318/596 cut-off events. [2021-03-24 10:31:56,016 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-24 10:31:56,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 596 events. 318/596 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3508 event pairs, 189 based on Foata normal form. 197/603 useless extension candidates. Maximal degree in co-relation 1087. Up to 477 conditions per place. [2021-03-24 10:31:56,020 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 16 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2021-03-24 10:31:56,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 140 flow [2021-03-24 10:31:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2021-03-24 10:31:56,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2021-03-24 10:31:56,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2021-03-24 10:31:56,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2021-03-24 10:31:56,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:56,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2021-03-24 10:31:56,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 10:31:56,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 10:31:56,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 10:31:56,023 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 86 flow. Second operand 3 states and 180 transitions. [2021-03-24 10:31:56,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 140 flow [2021-03-24 10:31:56,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 128 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-03-24 10:31:56,025 INFO L241 Difference]: Finished difference. Result has 37 places, 29 transitions, 109 flow [2021-03-24 10:31:56,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2021-03-24 10:31:56,025 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2021-03-24 10:31:56,025 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 109 flow [2021-03-24 10:31:56,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 10:31:56,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:56,025 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:31:56,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 10:31:56,025 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:56,026 INFO L82 PathProgramCache]: Analyzing trace with hash 812658720, now seen corresponding path program 1 times [2021-03-24 10:31:56,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:56,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423630691] [2021-03-24 10:31:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:56,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:56,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:31:56,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:56,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:31:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:31:56,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423630691] [2021-03-24 10:31:56,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:56,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:31:56,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192984332] [2021-03-24 10:31:56,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:56,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:56,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:56,085 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 85 [2021-03-24 10:31:56,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 10:31:56,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:56,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 85 [2021-03-24 10:31:56,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:56,121 INFO L129 PetriNetUnfolder]: 204/424 cut-off events. [2021-03-24 10:31:56,121 INFO L130 PetriNetUnfolder]: For 151/285 co-relation queries the response was YES. [2021-03-24 10:31:56,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 424 events. 204/424 cut-off events. For 151/285 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2086 event pairs, 40 based on Foata normal form. 135/525 useless extension candidates. Maximal degree in co-relation 892. Up to 189 conditions per place. [2021-03-24 10:31:56,124 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 13 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2021-03-24 10:31:56,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 143 flow [2021-03-24 10:31:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2021-03-24 10:31:56,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7529411764705882 [2021-03-24 10:31:56,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2021-03-24 10:31:56,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2021-03-24 10:31:56,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:56,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2021-03-24 10:31:56,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 10:31:56,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 10:31:56,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 10:31:56,127 INFO L185 Difference]: Start difference. First operand has 37 places, 29 transitions, 109 flow. Second operand 3 states and 192 transitions. [2021-03-24 10:31:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 143 flow [2021-03-24 10:31:56,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:31:56,128 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 116 flow [2021-03-24 10:31:56,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2021-03-24 10:31:56,128 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-03-24 10:31:56,128 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 116 flow [2021-03-24 10:31:56,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 10:31:56,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:56,129 INFO L263 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-03-24 10:31:56,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 10:31:56,129 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash 876332730, now seen corresponding path program 1 times [2021-03-24 10:31:56,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:56,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277252368] [2021-03-24 10:31:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:56,136 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:56,141 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:56,143 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:31:56,144 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:31:56,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 10:31:56,144 WARN L342 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:31:56,144 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,151 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,152 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,157 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:56,160 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:56,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 10:31:56,161 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:56,161 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:56,161 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:56,161 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:56,161 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:56,161 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:56,161 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:56,161 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:56,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,167 INFO L129 PetriNetUnfolder]: 6/106 cut-off events. [2021-03-24 10:31:56,167 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-24 10:31:56,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 106 events. 6/106 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 221 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 102. Up to 12 conditions per place. [2021-03-24 10:31:56,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,167 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:56,167 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,168 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 62 transitions, 169 flow [2021-03-24 10:31:56,173 INFO L129 PetriNetUnfolder]: 6/106 cut-off events. [2021-03-24 10:31:56,173 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-24 10:31:56,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 106 events. 6/106 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 234 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 102. Up to 12 conditions per place. [2021-03-24 10:31:56,174 INFO L142 LiptonReduction]: Number of co-enabled transitions 1820 [2021-03-24 10:31:57,321 INFO L154 LiptonReduction]: Checked pairs total: 2795 [2021-03-24 10:31:57,322 INFO L156 LiptonReduction]: Total number of compositions: 35 [2021-03-24 10:31:57,322 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1155 [2021-03-24 10:31:57,323 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 10:31:57,323 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:57,323 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:57,323 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:57,323 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash 461756588, now seen corresponding path program 1 times [2021-03-24 10:31:57,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:57,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87158853] [2021-03-24 10:31:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:57,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:57,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:57,335 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 10:31:57,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87158853] [2021-03-24 10:31:57,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:57,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:57,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099082003] [2021-03-24 10:31:57,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:57,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:57,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:57,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:57,337 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 97 [2021-03-24 10:31:57,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:31:57,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:57,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 97 [2021-03-24 10:31:57,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:57,540 INFO L129 PetriNetUnfolder]: 1973/3105 cut-off events. [2021-03-24 10:31:57,540 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-24 10:31:57,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 3105 events. 1973/3105 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 20947 event pairs, 1351 based on Foata normal form. 821/2922 useless extension candidates. Maximal degree in co-relation 5869. Up to 2706 conditions per place. [2021-03-24 10:31:57,563 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 20 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2021-03-24 10:31:57,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 177 flow [2021-03-24 10:31:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2021-03-24 10:31:57,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.711340206185567 [2021-03-24 10:31:57,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2021-03-24 10:31:57,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2021-03-24 10:31:57,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:57,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2021-03-24 10:31:57,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 10:31:57,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 10:31:57,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 10:31:57,566 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 109 flow. Second operand 3 states and 207 transitions. [2021-03-24 10:31:57,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 177 flow [2021-03-24 10:31:57,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 157 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-24 10:31:57,568 INFO L241 Difference]: Finished difference. Result has 44 places, 35 transitions, 133 flow [2021-03-24 10:31:57,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2021-03-24 10:31:57,569 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2021-03-24 10:31:57,569 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 133 flow [2021-03-24 10:31:57,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 10:31:57,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:57,569 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:31:57,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 10:31:57,569 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash 446812049, now seen corresponding path program 1 times [2021-03-24 10:31:57,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:57,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490967137] [2021-03-24 10:31:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:57,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:57,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:31:57,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:57,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:31:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:31:57,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490967137] [2021-03-24 10:31:57,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:57,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:31:57,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870651362] [2021-03-24 10:31:57,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:57,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:57,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:57,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:57,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 97 [2021-03-24 10:31:57,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 10:31:57,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:57,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 97 [2021-03-24 10:31:57,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:31:57,708 INFO L129 PetriNetUnfolder]: 960/1722 cut-off events. [2021-03-24 10:31:57,708 INFO L130 PetriNetUnfolder]: For 879/2044 co-relation queries the response was YES. [2021-03-24 10:31:57,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 1722 events. 960/1722 cut-off events. For 879/2044 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10523 event pairs, 219 based on Foata normal form. 729/2312 useless extension candidates. Maximal degree in co-relation 3633. Up to 889 conditions per place. [2021-03-24 10:31:57,720 INFO L132 encePairwiseOnDemand]: 87/97 looper letters, 16 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-03-24 10:31:57,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 175 flow [2021-03-24 10:31:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:31:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:31:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2021-03-24 10:31:57,721 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7491408934707904 [2021-03-24 10:31:57,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2021-03-24 10:31:57,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2021-03-24 10:31:57,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:31:57,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2021-03-24 10:31:57,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 10:31:57,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 10:31:57,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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 10:31:57,723 INFO L185 Difference]: Start difference. First operand has 44 places, 35 transitions, 133 flow. Second operand 3 states and 218 transitions. [2021-03-24 10:31:57,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 175 flow [2021-03-24 10:31:57,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:31:57,725 INFO L241 Difference]: Finished difference. Result has 41 places, 35 transitions, 142 flow [2021-03-24 10:31:57,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2021-03-24 10:31:57,725 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2021-03-24 10:31:57,725 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 142 flow [2021-03-24 10:31:57,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 10:31:57,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:57,726 INFO L263 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:31:57,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 10:31:57,726 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1731948024, now seen corresponding path program 1 times [2021-03-24 10:31:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:57,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525776136] [2021-03-24 10:31:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:57,739 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:31:57,748 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:31:57,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:31:57,757 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:31:57,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 10:31:57,757 WARN L342 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:31:57,758 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,783 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,784 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,785 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,785 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,786 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,786 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,786 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,787 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,787 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:31:57,787 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:31:57,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-24 10:31:57,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:31:57,790 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:31:57,790 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:31:57,790 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:31:57,790 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:31:57,790 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:31:57,790 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:31:57,790 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:31:57,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,799 INFO L129 PetriNetUnfolder]: 7/123 cut-off events. [2021-03-24 10:31:57,799 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-24 10:31:57,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 123 events. 7/123 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 126. Up to 14 conditions per place. [2021-03-24 10:31:57,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,800 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:31:57,800 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,800 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 70 transitions, 200 flow [2021-03-24 10:31:57,806 INFO L129 PetriNetUnfolder]: 7/123 cut-off events. [2021-03-24 10:31:57,806 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-24 10:31:57,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 123 events. 7/123 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 126. Up to 14 conditions per place. [2021-03-24 10:31:57,808 INFO L142 LiptonReduction]: Number of co-enabled transitions 2520 [2021-03-24 10:31:59,011 INFO L154 LiptonReduction]: Checked pairs total: 4071 [2021-03-24 10:31:59,012 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-24 10:31:59,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1212 [2021-03-24 10:31:59,013 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 10:31:59,013 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:31:59,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:31:59,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:31:59,013 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:31:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:31:59,014 INFO L82 PathProgramCache]: Analyzing trace with hash 573041109, now seen corresponding path program 1 times [2021-03-24 10:31:59,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:31:59,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837916022] [2021-03-24 10:31:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:31:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:31:59,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:31:59,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:31:59,024 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 10:31:59,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837916022] [2021-03-24 10:31:59,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:31:59,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:31:59,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266033858] [2021-03-24 10:31:59,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:31:59,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:31:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:31:59,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:31:59,025 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 109 [2021-03-24 10:31:59,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 10:31:59,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:31:59,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 109 [2021-03-24 10:31:59,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:32:00,167 INFO L129 PetriNetUnfolder]: 11012/15742 cut-off events. [2021-03-24 10:32:00,167 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-24 10:32:00,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30226 conditions, 15742 events. 11012/15742 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 112403 event pairs, 8141 based on Foata normal form. 3442/14139 useless extension candidates. Maximal degree in co-relation 30159. Up to 14251 conditions per place. [2021-03-24 10:32:00,282 INFO L132 encePairwiseOnDemand]: 95/109 looper letters, 24 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2021-03-24 10:32:00,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 216 flow [2021-03-24 10:32:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:32:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:32:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2021-03-24 10:32:00,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6972477064220184 [2021-03-24 10:32:00,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2021-03-24 10:32:00,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2021-03-24 10:32:00,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:32:00,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2021-03-24 10:32:00,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 10:32:00,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 10:32:00,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 10:32:00,285 INFO L185 Difference]: Start difference. First operand has 50 places, 37 transitions, 134 flow. Second operand 3 states and 228 transitions. [2021-03-24 10:32:00,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 216 flow [2021-03-24 10:32:00,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 186 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-24 10:32:00,287 INFO L241 Difference]: Finished difference. Result has 51 places, 41 transitions, 157 flow [2021-03-24 10:32:00,287 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2021-03-24 10:32:00,287 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2021-03-24 10:32:00,287 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 157 flow [2021-03-24 10:32:00,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 10:32:00,288 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:00,288 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:32:00,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 10:32:00,288 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:00,288 INFO L82 PathProgramCache]: Analyzing trace with hash -876967498, now seen corresponding path program 1 times [2021-03-24 10:32:00,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:00,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979057382] [2021-03-24 10:32:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:32:00,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:32:00,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:32:00,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:32:00,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:32:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:32:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979057382] [2021-03-24 10:32:00,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:32:00,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:32:00,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351865284] [2021-03-24 10:32:00,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:32:00,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:32:00,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:32:00,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:32:00,315 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 109 [2021-03-24 10:32:00,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 10:32:00,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:32:00,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 109 [2021-03-24 10:32:00,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:32:00,807 INFO L129 PetriNetUnfolder]: 4252/7024 cut-off events. [2021-03-24 10:32:00,807 INFO L130 PetriNetUnfolder]: For 4691/13930 co-relation queries the response was YES. [2021-03-24 10:32:00,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14715 conditions, 7024 events. 4252/7024 cut-off events. For 4691/13930 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 50305 event pairs, 1162 based on Foata normal form. 3614/10039 useless extension candidates. Maximal degree in co-relation 14690. Up to 4081 conditions per place. [2021-03-24 10:32:00,851 INFO L132 encePairwiseOnDemand]: 97/109 looper letters, 19 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2021-03-24 10:32:00,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 207 flow [2021-03-24 10:32:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:32:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:32:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2021-03-24 10:32:00,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.746177370030581 [2021-03-24 10:32:00,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2021-03-24 10:32:00,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2021-03-24 10:32:00,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:32:00,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2021-03-24 10:32:00,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 10:32:00,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 10:32:00,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 10:32:00,854 INFO L185 Difference]: Start difference. First operand has 51 places, 41 transitions, 157 flow. Second operand 3 states and 244 transitions. [2021-03-24 10:32:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 207 flow [2021-03-24 10:32:00,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:32:00,857 INFO L241 Difference]: Finished difference. Result has 47 places, 41 transitions, 168 flow [2021-03-24 10:32:00,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2021-03-24 10:32:00,857 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2021-03-24 10:32:00,857 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 168 flow [2021-03-24 10:32:00,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 10:32:00,857 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:00,857 INFO L263 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:32:00,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 10:32:00,858 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:00,858 INFO L82 PathProgramCache]: Analyzing trace with hash -121589179, now seen corresponding path program 1 times [2021-03-24 10:32:00,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:00,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465337932] [2021-03-24 10:32:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:32:00,871 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:32:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:32:00,882 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:32:00,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:32:00,890 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:32:00,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 10:32:00,890 WARN L342 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:32:00,891 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,906 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,907 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:00,911 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:32:00,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-24 10:32:00,912 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:32:00,912 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:32:00,912 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:32:00,912 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:32:00,912 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:32:00,912 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:32:00,912 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:32:00,912 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:32:00,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,921 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2021-03-24 10:32:00,921 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-24 10:32:00,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 140 events. 8/140 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2021-03-24 10:32:00,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,922 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:32:00,922 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,922 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 78 transitions, 233 flow [2021-03-24 10:32:00,927 INFO L129 PetriNetUnfolder]: 8/140 cut-off events. [2021-03-24 10:32:00,927 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-24 10:32:00,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 140 events. 8/140 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2021-03-24 10:32:00,930 INFO L142 LiptonReduction]: Number of co-enabled transitions 3332 [2021-03-24 10:32:02,269 INFO L154 LiptonReduction]: Checked pairs total: 5083 [2021-03-24 10:32:02,269 INFO L156 LiptonReduction]: Total number of compositions: 43 [2021-03-24 10:32:02,269 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1347 [2021-03-24 10:32:02,270 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 10:32:02,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:32:02,270 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:02,270 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:32:02,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:02,270 INFO L82 PathProgramCache]: Analyzing trace with hash 695777271, now seen corresponding path program 1 times [2021-03-24 10:32:02,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:02,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33647873] [2021-03-24 10:32:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:32:02,284 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.8 percent of original size [2021-03-24 10:32:02,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-24 10:32:02,295 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 10:32:02,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33647873] [2021-03-24 10:32:02,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:32:02,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:32:02,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446553059] [2021-03-24 10:32:02,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:32:02,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:32:02,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:32:02,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:32:02,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 121 [2021-03-24 10:32:02,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 10:32:02,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:32:02,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 121 [2021-03-24 10:32:02,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:32:08,186 INFO L129 PetriNetUnfolder]: 57279/77011 cut-off events. [2021-03-24 10:32:08,186 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-24 10:32:08,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148666 conditions, 77011 events. 57279/77011 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6498. Compared 569307 event pairs, 44383 based on Foata normal form. 14338/66762 useless extension candidates. Maximal degree in co-relation 148585. Up to 71156 conditions per place. [2021-03-24 10:32:09,038 INFO L132 encePairwiseOnDemand]: 105/121 looper letters, 28 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2021-03-24 10:32:09,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 257 flow [2021-03-24 10:32:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:32:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:32:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2021-03-24 10:32:09,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6859504132231405 [2021-03-24 10:32:09,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2021-03-24 10:32:09,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2021-03-24 10:32:09,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:32:09,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2021-03-24 10:32:09,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 10:32:09,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 10:32:09,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 10:32:09,041 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 161 flow. Second operand 3 states and 249 transitions. [2021-03-24 10:32:09,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 257 flow [2021-03-24 10:32:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 215 flow, removed 21 selfloop flow, removed 0 redundant places. [2021-03-24 10:32:09,043 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 181 flow [2021-03-24 10:32:09,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2021-03-24 10:32:09,043 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2021-03-24 10:32:09,043 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 181 flow [2021-03-24 10:32:09,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 10:32:09,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:09,043 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:32:09,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 10:32:09,043 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:09,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:09,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1359451971, now seen corresponding path program 1 times [2021-03-24 10:32:09,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:09,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048031392] [2021-03-24 10:32:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:32:09,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:32:09,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:32:09,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:32:09,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:32:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:32:09,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048031392] [2021-03-24 10:32:09,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:32:09,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:32:09,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351177030] [2021-03-24 10:32:09,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:32:09,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:32:09,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:32:09,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:32:09,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 121 [2021-03-24 10:32:09,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 10:32:09,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:32:09,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 121 [2021-03-24 10:32:09,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:32:10,855 INFO L129 PetriNetUnfolder]: 18292/28638 cut-off events. [2021-03-24 10:32:10,855 INFO L130 PetriNetUnfolder]: For 23575/92911 co-relation queries the response was YES. [2021-03-24 10:32:11,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59337 conditions, 28638 events. 18292/28638 cut-off events. For 23575/92911 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 232668 event pairs, 5957 based on Foata normal form. 16924/42925 useless extension candidates. Maximal degree in co-relation 59311. Up to 18401 conditions per place. [2021-03-24 10:32:11,148 INFO L132 encePairwiseOnDemand]: 107/121 looper letters, 22 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2021-03-24 10:32:11,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 239 flow [2021-03-24 10:32:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:32:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:32:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-03-24 10:32:11,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.743801652892562 [2021-03-24 10:32:11,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-03-24 10:32:11,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-03-24 10:32:11,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:32:11,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-03-24 10:32:11,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 10:32:11,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 10:32:11,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 10:32:11,152 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 181 flow. Second operand 3 states and 270 transitions. [2021-03-24 10:32:11,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 239 flow [2021-03-24 10:32:11,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:32:11,156 INFO L241 Difference]: Finished difference. Result has 53 places, 47 transitions, 194 flow [2021-03-24 10:32:11,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2021-03-24 10:32:11,156 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2021-03-24 10:32:11,156 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 194 flow [2021-03-24 10:32:11,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 10:32:11,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:11,156 INFO L263 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:32:11,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 10:32:11,156 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash -484122207, now seen corresponding path program 1 times [2021-03-24 10:32:11,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:11,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096216853] [2021-03-24 10:32:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:32:11,166 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:32:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:32:11,172 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:32:11,178 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:32:11,178 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:32:11,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 10:32:11,179 WARN L342 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:32:11,179 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-03-24 10:32:11,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:32:11,200 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:32:11,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-24 10:32:11,201 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:32:11,202 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:32:11,202 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:32:11,202 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:32:11,202 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:32:11,202 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:32:11,202 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:32:11,202 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:32:11,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,211 INFO L129 PetriNetUnfolder]: 9/157 cut-off events. [2021-03-24 10:32:11,211 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-24 10:32:11,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 157 events. 9/157 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 378 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2021-03-24 10:32:11,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,212 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:32:11,212 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,212 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 86 transitions, 268 flow [2021-03-24 10:32:11,222 INFO L129 PetriNetUnfolder]: 9/157 cut-off events. [2021-03-24 10:32:11,222 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-24 10:32:11,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 157 events. 9/157 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 179. Up to 18 conditions per place. [2021-03-24 10:32:11,225 INFO L142 LiptonReduction]: Number of co-enabled transitions 4256 [2021-03-24 10:32:12,666 INFO L154 LiptonReduction]: Checked pairs total: 6921 [2021-03-24 10:32:12,667 INFO L156 LiptonReduction]: Total number of compositions: 47 [2021-03-24 10:32:12,667 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1455 [2021-03-24 10:32:12,668 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 10:32:12,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:32:12,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:32:12,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:32:12,668 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:32:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:32:12,668 INFO L82 PathProgramCache]: Analyzing trace with hash 829965070, now seen corresponding path program 1 times [2021-03-24 10:32:12,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:32:12,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167444493] [2021-03-24 10:32:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:32:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:32:12,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:32:12,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:32:12,678 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 10:32:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167444493] [2021-03-24 10:32:12,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:32:12,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:32:12,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478315823] [2021-03-24 10:32:12,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:32:12,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:32:12,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:32:12,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:32:12,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 133 [2021-03-24 10:32:12,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 10:32:12,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:32:12,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 133 [2021-03-24 10:32:12,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:33:06,687 INFO L129 PetriNetUnfolder]: 283546/365232 cut-off events. [2021-03-24 10:33:06,688 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2021-03-24 10:33:09,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 708071 conditions, 365232 events. 283546/365232 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 26062. Compared 2765108 event pairs, 226861 based on Foata normal form. 59246/307962 useless extension candidates. Maximal degree in co-relation 707975. Up to 341753 conditions per place. [2021-03-24 10:33:11,011 INFO L132 encePairwiseOnDemand]: 115/133 looper letters, 32 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2021-03-24 10:33:11,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 300 flow [2021-03-24 10:33:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:33:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:33:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2021-03-24 10:33:11,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2021-03-24 10:33:11,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2021-03-24 10:33:11,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2021-03-24 10:33:11,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:33:11,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2021-03-24 10:33:11,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 10:33:11,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 10:33:11,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 10:33:11,013 INFO L185 Difference]: Start difference. First operand has 64 places, 47 transitions, 190 flow. Second operand 3 states and 270 transitions. [2021-03-24 10:33:11,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 300 flow [2021-03-24 10:33:11,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 244 flow, removed 28 selfloop flow, removed 0 redundant places. [2021-03-24 10:33:11,015 INFO L241 Difference]: Finished difference. Result has 65 places, 53 transitions, 205 flow [2021-03-24 10:33:11,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2021-03-24 10:33:11,015 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2021-03-24 10:33:11,015 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 205 flow [2021-03-24 10:33:11,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 10:33:11,015 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:33:11,015 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:33:11,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 10:33:11,015 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:33:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:33:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1432761033, now seen corresponding path program 1 times [2021-03-24 10:33:11,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:33:11,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005654512] [2021-03-24 10:33:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:33:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:33:11,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:33:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:33:11,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:33:11,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 10:33:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:33:11,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005654512] [2021-03-24 10:33:11,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:33:11,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:33:11,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627872755] [2021-03-24 10:33:11,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:33:11,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:33:11,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:33:11,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:33:11,033 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 133 [2021-03-24 10:33:11,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 205 flow. Second operand has 3 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 10:33:11,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:33:11,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 133 [2021-03-24 10:33:11,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:33:19,209 INFO L129 PetriNetUnfolder]: 69689/100526 cut-off events. [2021-03-24 10:33:19,209 INFO L130 PetriNetUnfolder]: For 113583/429092 co-relation queries the response was YES. [2021-03-24 10:33:19,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204313 conditions, 100526 events. 69689/100526 cut-off events. For 113583/429092 co-relation queries the response was YES. Maximal size of possible extension queue 7313. Compared 842675 event pairs, 40358 based on Foata normal form. 61907/148266 useless extension candidates. Maximal degree in co-relation 204286. Up to 65499 conditions per place. [2021-03-24 10:33:20,442 INFO L132 encePairwiseOnDemand]: 117/133 looper letters, 25 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2021-03-24 10:33:20,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 271 flow [2021-03-24 10:33:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:33:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:33:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-03-24 10:33:20,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7418546365914787 [2021-03-24 10:33:20,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-03-24 10:33:20,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-03-24 10:33:20,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:33:20,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-03-24 10:33:20,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:33:20,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 10:33:20,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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 10:33:20,446 INFO L185 Difference]: Start difference. First operand has 65 places, 53 transitions, 205 flow. Second operand 3 states and 296 transitions. [2021-03-24 10:33:20,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 271 flow [2021-03-24 10:33:20,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:33:20,450 INFO L241 Difference]: Finished difference. Result has 59 places, 53 transitions, 220 flow [2021-03-24 10:33:20,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2021-03-24 10:33:20,451 INFO L343 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2021-03-24 10:33:20,451 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 220 flow [2021-03-24 10:33:20,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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 10:33:20,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:33:20,451 INFO L263 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:33:20,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 10:33:20,451 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:33:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:33:20,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1246262772, now seen corresponding path program 1 times [2021-03-24 10:33:20,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:33:20,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300247791] [2021-03-24 10:33:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:33:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:33:20,461 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:33:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:33:20,469 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:33:20,473 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:33:20,473 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:33:20,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 10:33:20,473 WARN L342 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-03-24 10:33:20,473 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:33:20,494 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:33:20,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-03-24 10:33:20,494 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:33:20,495 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:33:20,495 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:33:20,495 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:33:20,495 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:33:20,495 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:33:20,495 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:33:20,495 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:33:20,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,502 INFO L129 PetriNetUnfolder]: 10/174 cut-off events. [2021-03-24 10:33:20,502 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-03-24 10:33:20,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 174 events. 10/174 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2021-03-24 10:33:20,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,503 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:33:20,503 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,503 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 94 transitions, 305 flow [2021-03-24 10:33:20,510 INFO L129 PetriNetUnfolder]: 10/174 cut-off events. [2021-03-24 10:33:20,510 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-03-24 10:33:20,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 174 events. 10/174 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 446 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2021-03-24 10:33:20,513 INFO L142 LiptonReduction]: Number of co-enabled transitions 5292 [2021-03-24 10:33:21,924 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-03-24 10:33:21,973 INFO L154 LiptonReduction]: Checked pairs total: 8161 [2021-03-24 10:33:21,973 INFO L156 LiptonReduction]: Total number of compositions: 51 [2021-03-24 10:33:21,973 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1470 [2021-03-24 10:33:21,974 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 10:33:21,974 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:33:21,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:33:21,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 10:33:21,975 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:33:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:33:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash 975604576, now seen corresponding path program 1 times [2021-03-24 10:33:21,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:33:21,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606650279] [2021-03-24 10:33:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:33:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:33:21,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:33:21,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:33:21,984 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 10:33:21,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606650279] [2021-03-24 10:33:21,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:33:21,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 10:33:21,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339509894] [2021-03-24 10:33:21,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:33:21,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:33:21,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:33:21,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:33:21,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 145 [2021-03-24 10:33:21,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 10:33:21,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:33:21,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 145 [2021-03-24 10:33:21,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown