/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:15:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:15:20,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:15:20,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 06:15:20,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 06:15:20,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 06:15:20,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 06:15:20,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 06:15:20,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 06:15:20,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 06:15:20,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 06:15:20,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 06:15:20,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:15:20,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:15:20,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:15:20,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:15:20,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:15:20,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:15:20,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:15:20,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:15:20,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:15:20,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:15:20,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:15:20,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:15:20,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:15:20,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 06:15:20,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 06:15:20,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 06:15:20,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 06:15:20,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 06:15:20,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 06:15:20,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 06:15:20,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 06:15:20,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:15:20,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:15:20,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:15:20,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 06:15:20,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:15:20,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:15:20,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:15:20,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:15:20,962 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:15:20,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:15:20,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:15:20,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:15:20,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:15:20,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:15:20,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:15:20,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:15:20,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:15:20,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:15:20,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:15:20,965 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:15:20,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:15:20,966 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:15:21,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:15:21,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:15:21,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:15:21,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:15:21,232 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:15:21,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-08-13 06:15:21,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c1de030/ef15d0b477a14a7ab984e60bdb35e220/FLAG86c02eda1 [2021-08-13 06:15:21,740 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:15:21,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-08-13 06:15:21,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c1de030/ef15d0b477a14a7ab984e60bdb35e220/FLAG86c02eda1 [2021-08-13 06:15:21,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c1de030/ef15d0b477a14a7ab984e60bdb35e220 [2021-08-13 06:15:21,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:15:21,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:15:21,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:15:21,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:15:21,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:15:21,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:15:21" (1/1) ... [2021-08-13 06:15:21,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:21, skipping insertion in model container [2021-08-13 06:15:21,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:15:21" (1/1) ... [2021-08-13 06:15:21,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:15:21,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:15:21,938 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-08-13 06:15:22,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:15:22,039 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:15:22,046 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-08-13 06:15:22,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:15:22,119 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:15:22,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22 WrapperNode [2021-08-13 06:15:22,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:15:22,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:15:22,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:15:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:15:22,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:15:22,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:15:22,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:15:22,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:15:22,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (1/1) ... [2021-08-13 06:15:22,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:15:22,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:15:22,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:15:22,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:15:22,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (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 [2021-08-13 06:15:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:15:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:15:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:15:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:15:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:15:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 06:15:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:15:22,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:15:22,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:15:22,269 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 06:15:22,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:15:22,615 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:15:22,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:15:22 BoogieIcfgContainer [2021-08-13 06:15:22,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:15:22,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:15:22,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:15:22,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:15:22,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:15:21" (1/3) ... [2021-08-13 06:15:22,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460f494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:15:22, skipping insertion in model container [2021-08-13 06:15:22,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:15:22" (2/3) ... [2021-08-13 06:15:22,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460f494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:15:22, skipping insertion in model container [2021-08-13 06:15:22,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:15:22" (3/3) ... [2021-08-13 06:15:22,622 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-08-13 06:15:22,626 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:15:22,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:15:22,627 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:15:22,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,656 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,660 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,660 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,665 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,666 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,666 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,668 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,668 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,672 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,672 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:15:22,677 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:15:22,693 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 06:15:22,715 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:15:22,715 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:15:22,715 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:15:22,715 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:15:22,715 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:15:22,715 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:15:22,715 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:15:22,715 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:15:22,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 06:15:22,764 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 06:15:22,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:15:22,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 06:15:22,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 06:15:22,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 06:15:22,798 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 06:15:22,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:15:22,799 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:22,799 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:22,800 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-08-13 06:15:22,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:22,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866334539] [2021-08-13 06:15:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:23,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:23,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:23,097 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:15:23,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:15:23,119 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:15:23,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:15:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:23,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:23,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:23,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:23,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866334539] [2021-08-13 06:15:23,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866334539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:23,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:23,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:15:23,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581384311] [2021-08-13 06:15:23,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:15:23,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:23,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:15:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:15:23,193 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 06:15:23,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-08-13 06:15:23,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:23,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 06:15:23,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:23,507 INFO L129 PetriNetUnfolder]: 322/787 cut-off events. [2021-08-13 06:15:23,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:15:23,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 787 events. 322/787 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4601 event pairs, 17 based on Foata normal form. 30/789 useless extension candidates. Maximal degree in co-relation 1310. Up to 173 conditions per place. [2021-08-13 06:15:23,515 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 19 selfloop transitions, 7 changer transitions 47/126 dead transitions. [2021-08-13 06:15:23,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 407 flow [2021-08-13 06:15:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:15:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:15:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 924 transitions. [2021-08-13 06:15:23,531 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-08-13 06:15:23,532 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 924 transitions. [2021-08-13 06:15:23,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 924 transitions. [2021-08-13 06:15:23,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:23,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 924 transitions. [2021-08-13 06:15:23,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.07692307692308) internal successors, (924), 13 states have internal predecessors, (924), 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) [2021-08-13 06:15:23,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:23,550 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:23,550 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-08-13 06:15:23,550 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 407 flow [2021-08-13 06:15:23,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-08-13 06:15:23,551 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:23,551 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:23,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:15:23,552 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1069017409, now seen corresponding path program 1 times [2021-08-13 06:15:23,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:23,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86996662] [2021-08-13 06:15:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:23,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:23,639 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:15:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:15:23,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:23,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:23,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:23,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:23,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:23,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86996662] [2021-08-13 06:15:23,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86996662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:23,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:23,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:15:23,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134514806] [2021-08-13 06:15:23,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:15:23,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:15:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:15:23,684 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-08-13 06:15:23,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2021-08-13 06:15:23,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:23,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-08-13 06:15:23,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:23,935 INFO L129 PetriNetUnfolder]: 483/1275 cut-off events. [2021-08-13 06:15:23,935 INFO L130 PetriNetUnfolder]: For 85/459 co-relation queries the response was YES. [2021-08-13 06:15:23,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2922 conditions, 1275 events. 483/1275 cut-off events. For 85/459 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9297 event pairs, 14 based on Foata normal form. 17/1268 useless extension candidates. Maximal degree in co-relation 2885. Up to 413 conditions per place. [2021-08-13 06:15:23,942 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 22 selfloop transitions, 7 changer transitions 170/256 dead transitions. [2021-08-13 06:15:23,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 256 transitions, 1319 flow [2021-08-13 06:15:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:15:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:15:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 665 transitions. [2021-08-13 06:15:23,944 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8796296296296297 [2021-08-13 06:15:23,944 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 665 transitions. [2021-08-13 06:15:23,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 665 transitions. [2021-08-13 06:15:23,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:23,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 665 transitions. [2021-08-13 06:15:23,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.88888888888889) internal successors, (665), 9 states have internal predecessors, (665), 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) [2021-08-13 06:15:23,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 06:15:23,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 06:15:23,948 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2021-08-13 06:15:23,948 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 256 transitions, 1319 flow [2021-08-13 06:15:23,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 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) [2021-08-13 06:15:23,948 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:23,948 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:23,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:15:23,948 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:23,949 INFO L82 PathProgramCache]: Analyzing trace with hash -643084036, now seen corresponding path program 1 times [2021-08-13 06:15:23,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:23,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521110110] [2021-08-13 06:15:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:24,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:24,010 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:15:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:15:24,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:24,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:24,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521110110] [2021-08-13 06:15:24,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521110110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:24,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:24,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:15:24,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077660082] [2021-08-13 06:15:24,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:15:24,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:24,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:15:24,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:15:24,048 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-08-13 06:15:24,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 256 transitions, 1319 flow. Second operand has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 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) [2021-08-13 06:15:24,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:24,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-08-13 06:15:24,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:24,305 INFO L129 PetriNetUnfolder]: 632/1864 cut-off events. [2021-08-13 06:15:24,305 INFO L130 PetriNetUnfolder]: For 295/2147 co-relation queries the response was YES. [2021-08-13 06:15:24,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 1864 events. 632/1864 cut-off events. For 295/2147 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16174 event pairs, 5 based on Foata normal form. 22/1857 useless extension candidates. Maximal degree in co-relation 5221. Up to 659 conditions per place. [2021-08-13 06:15:24,313 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 29 selfloop transitions, 8 changer transitions 321/415 dead transitions. [2021-08-13 06:15:24,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 415 transitions, 2983 flow [2021-08-13 06:15:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:15:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:15:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2021-08-13 06:15:24,318 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2021-08-13 06:15:24,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2021-08-13 06:15:24,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2021-08-13 06:15:24,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:24,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2021-08-13 06:15:24,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 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) [2021-08-13 06:15:24,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 06:15:24,326 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-08-13 06:15:24,326 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2021-08-13 06:15:24,327 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 415 transitions, 2983 flow [2021-08-13 06:15:24,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 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) [2021-08-13 06:15:24,327 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:24,327 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:24,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:15:24,327 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1880440320, now seen corresponding path program 1 times [2021-08-13 06:15:24,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:24,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751134919] [2021-08-13 06:15:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:24,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:24,414 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 06:15:24,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 06:15:24,422 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:15:24,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:15:24,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:24,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:24,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751134919] [2021-08-13 06:15:24,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751134919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:24,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:24,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:15:24,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528634933] [2021-08-13 06:15:24,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:15:24,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:15:24,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:15:24,453 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 06:15:24,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 415 transitions, 2983 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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) [2021-08-13 06:15:24,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:24,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 06:15:24,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:24,788 INFO L129 PetriNetUnfolder]: 633/2048 cut-off events. [2021-08-13 06:15:24,789 INFO L130 PetriNetUnfolder]: For 641/6232 co-relation queries the response was YES. [2021-08-13 06:15:24,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 2048 events. 633/2048 cut-off events. For 641/6232 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 19084 event pairs, 0 based on Foata normal form. 24/2051 useless extension candidates. Maximal degree in co-relation 6700. Up to 678 conditions per place. [2021-08-13 06:15:24,797 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 24 selfloop transitions, 10 changer transitions 564/651 dead transitions. [2021-08-13 06:15:24,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 651 transitions, 6023 flow [2021-08-13 06:15:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:15:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:15:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 06:15:24,800 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8388278388278388 [2021-08-13 06:15:24,800 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 06:15:24,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 06:15:24,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:24,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 06:15:24,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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) [2021-08-13 06:15:24,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:24,804 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:24,804 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 40 predicate places. [2021-08-13 06:15:24,804 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 651 transitions, 6023 flow [2021-08-13 06:15:24,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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) [2021-08-13 06:15:24,804 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:24,807 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:24,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:15:24,807 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:24,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2087159071, now seen corresponding path program 1 times [2021-08-13 06:15:24,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:24,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870277524] [2021-08-13 06:15:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:24,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:24,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:24,913 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:15:24,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:15:24,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:24,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:24,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:24,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:24,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870277524] [2021-08-13 06:15:24,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870277524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:24,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:24,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:15:24,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737740189] [2021-08-13 06:15:24,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:15:24,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:24,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:15:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:15:24,946 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:15:24,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 651 transitions, 6023 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2021-08-13 06:15:24,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:24,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:15:24,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:25,469 INFO L129 PetriNetUnfolder]: 1474/3722 cut-off events. [2021-08-13 06:15:25,469 INFO L130 PetriNetUnfolder]: For 3957/17376 co-relation queries the response was YES. [2021-08-13 06:15:25,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14614 conditions, 3722 events. 1474/3722 cut-off events. For 3957/17376 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 35037 event pairs, 0 based on Foata normal form. 23/3715 useless extension candidates. Maximal degree in co-relation 14564. Up to 1509 conditions per place. [2021-08-13 06:15:25,485 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 10 selfloop transitions, 5 changer transitions 942/1017 dead transitions. [2021-08-13 06:15:25,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 1017 transitions, 10825 flow [2021-08-13 06:15:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:15:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:15:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2021-08-13 06:15:25,487 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8635531135531136 [2021-08-13 06:15:25,487 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2021-08-13 06:15:25,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2021-08-13 06:15:25,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:25,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2021-08-13 06:15:25,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 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) [2021-08-13 06:15:25,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:25,494 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:25,495 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 52 predicate places. [2021-08-13 06:15:25,495 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 1017 transitions, 10825 flow [2021-08-13 06:15:25,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2021-08-13 06:15:25,496 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:25,496 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:25,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 06:15:25,496 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1764590873, now seen corresponding path program 1 times [2021-08-13 06:15:25,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:25,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531036205] [2021-08-13 06:15:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:25,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:25,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:25,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:25,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:25,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:15:25,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:15:25,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:25,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:15:25,561 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:15:25,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:25,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:25,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:25,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531036205] [2021-08-13 06:15:25,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531036205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:25,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:25,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:15:25,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191601811] [2021-08-13 06:15:25,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:15:25,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:15:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:15:25,573 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:15:25,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 1017 transitions, 10825 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:15:25,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:25,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:15:25,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:26,426 INFO L129 PetriNetUnfolder]: 1802/4718 cut-off events. [2021-08-13 06:15:26,427 INFO L130 PetriNetUnfolder]: For 2765/4206 co-relation queries the response was YES. [2021-08-13 06:15:26,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14886 conditions, 4718 events. 1802/4718 cut-off events. For 2765/4206 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47648 event pairs, 39 based on Foata normal form. 49/4449 useless extension candidates. Maximal degree in co-relation 14833. Up to 1596 conditions per place. [2021-08-13 06:15:26,456 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 24 selfloop transitions, 17 changer transitions 474/664 dead transitions. [2021-08-13 06:15:26,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 664 transitions, 6701 flow [2021-08-13 06:15:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:15:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:15:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 06:15:26,462 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 06:15:26,462 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 06:15:26,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 06:15:26,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:26,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 06:15:26,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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) [2021-08-13 06:15:26,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-08-13 06:15:26,466 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-08-13 06:15:26,466 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2021-08-13 06:15:26,466 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 664 transitions, 6701 flow [2021-08-13 06:15:26,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:15:26,467 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:26,467 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:26,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 06:15:26,467 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:26,467 INFO L82 PathProgramCache]: Analyzing trace with hash -43552206, now seen corresponding path program 1 times [2021-08-13 06:15:26,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:26,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110848356] [2021-08-13 06:15:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:26,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:26,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:26,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:26,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:26,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:26,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:26,514 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:15:26,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:15:26,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:26,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:15:26,534 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:15:26,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:26,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:26,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:26,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110848356] [2021-08-13 06:15:26,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110848356] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:26,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:26,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:15:26,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448755040] [2021-08-13 06:15:26,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:15:26,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:26,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:15:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:15:26,545 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:15:26,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 664 transitions, 6701 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-08-13 06:15:26,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:26,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:15:26,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:27,012 INFO L129 PetriNetUnfolder]: 1030/2764 cut-off events. [2021-08-13 06:15:27,012 INFO L130 PetriNetUnfolder]: For 976/2677 co-relation queries the response was YES. [2021-08-13 06:15:27,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8365 conditions, 2764 events. 1030/2764 cut-off events. For 976/2677 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 26465 event pairs, 0 based on Foata normal form. 299/2825 useless extension candidates. Maximal degree in co-relation 8309. Up to 782 conditions per place. [2021-08-13 06:15:27,026 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 17 selfloop transitions, 44 changer transitions 224/355 dead transitions. [2021-08-13 06:15:27,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 355 transitions, 3099 flow [2021-08-13 06:15:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:15:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:15:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 06:15:27,028 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 06:15:27,028 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 06:15:27,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 06:15:27,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:27,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 06:15:27,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 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) [2021-08-13 06:15:27,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:27,031 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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) [2021-08-13 06:15:27,031 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 67 predicate places. [2021-08-13 06:15:27,031 INFO L482 AbstractCegarLoop]: Abstraction has has 145 places, 355 transitions, 3099 flow [2021-08-13 06:15:27,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-08-13 06:15:27,032 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:15:27,032 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:15:27,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 06:15:27,032 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:15:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:15:27,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2073276109, now seen corresponding path program 1 times [2021-08-13 06:15:27,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:15:27,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649180966] [2021-08-13 06:15:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:15:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:15:27,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:27,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:27,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:27,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:15:27,106 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:15:27,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:15:27,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:15:27,124 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:15:27,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:15:27,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:15:27,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:15:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:15:27,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:15:27,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649180966] [2021-08-13 06:15:27,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649180966] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:15:27,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:15:27,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:15:27,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637433308] [2021-08-13 06:15:27,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:15:27,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:15:27,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:15:27,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:15:27,135 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:15:27,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 355 transitions, 3099 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-08-13 06:15:27,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:15:27,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:15:27,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:15:27,510 INFO L129 PetriNetUnfolder]: 908/2460 cut-off events. [2021-08-13 06:15:27,510 INFO L130 PetriNetUnfolder]: For 902/3461 co-relation queries the response was YES. [2021-08-13 06:15:27,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8274 conditions, 2460 events. 908/2460 cut-off events. For 902/3461 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 24382 event pairs, 0 based on Foata normal form. 356/2606 useless extension candidates. Maximal degree in co-relation 8215. Up to 724 conditions per place. [2021-08-13 06:15:27,523 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 211/211 dead transitions. [2021-08-13 06:15:27,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 1595 flow [2021-08-13 06:15:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 06:15:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 06:15:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 06:15:27,526 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 06:15:27,526 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 06:15:27,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 06:15:27,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:15:27,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 06:15:27,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 states have internal predecessors, (1176), 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) [2021-08-13 06:15:27,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-08-13 06:15:27,530 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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) [2021-08-13 06:15:27,530 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 59 predicate places. [2021-08-13 06:15:27,530 INFO L482 AbstractCegarLoop]: Abstraction has has 137 places, 211 transitions, 1595 flow [2021-08-13 06:15:27,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-08-13 06:15:27,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown