/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:14:53,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:14:53,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:14:53,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:14:53,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:14:53,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:14:53,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:14:53,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:14:53,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:14:53,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:14:53,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:14:53,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:14:53,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:14:53,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:14:53,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:14:53,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:14:53,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:14:53,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:14:53,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:14:53,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:14:53,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:14:53,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:14:53,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:14:53,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:14:53,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:14:53,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:14:53,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:14:53,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:14:53,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:14:53,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:14:53,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:14:53,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:14:53,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:14:53,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:14:53,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:14:53,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:14:53,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:14:53,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:14:53,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:14:53,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:14:53,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:14:53,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:14:53,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:14:53,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:14:53,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:14:53,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:14:53,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:14:53,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:14:53,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:14:53,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:14:53,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:14:53,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:14:53,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:14:53,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:14:53,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:14:53,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:14:53,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:14:53,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:14:53,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:14:53,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:14:53,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:14:53,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:14:53,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:14:53,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:14:53,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:14:53,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:14:53,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:14:54,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:14:54,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:14:54,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:14:54,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:14:54,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:14:54,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-09 18:14:54,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adffd8371/d8bfb500e87d484b9eb0b30b8af3852e/FLAG017f66d19 [2020-10-09 18:14:54,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:14:54,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-09 18:14:54,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adffd8371/d8bfb500e87d484b9eb0b30b8af3852e/FLAG017f66d19 [2020-10-09 18:14:54,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adffd8371/d8bfb500e87d484b9eb0b30b8af3852e [2020-10-09 18:14:54,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:14:54,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:14:54,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:54,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:14:54,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:14:54,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:54" (1/1) ... [2020-10-09 18:14:54,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a1cbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:54, skipping insertion in model container [2020-10-09 18:14:54,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:14:54" (1/1) ... [2020-10-09 18:14:54,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:14:55,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:14:55,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:55,588 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:14:55,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:14:55,719 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:14:55,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55 WrapperNode [2020-10-09 18:14:55,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:14:55,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:55,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:14:55,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:14:55,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:14:55,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:14:55,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:14:55,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:14:55,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... [2020-10-09 18:14:55,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:14:55,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:14:55,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:14:55,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:14:55,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:14:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:14:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:14:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:14:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:14:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:14:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:14:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 18:14:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 18:14:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:14:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:14:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:14:55,865 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:14:56,227 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:14:56,227 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:14:56,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:56 BoogieIcfgContainer [2020-10-09 18:14:56,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:14:56,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:14:56,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:14:56,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:14:56,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:14:54" (1/3) ... [2020-10-09 18:14:56,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74592eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:56, skipping insertion in model container [2020-10-09 18:14:56,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:14:55" (2/3) ... [2020-10-09 18:14:56,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74592eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:56, skipping insertion in model container [2020-10-09 18:14:56,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:56" (3/3) ... [2020-10-09 18:14:56,238 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-10-09 18:14:56,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:14:56,256 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:14:56,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:14:56,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,290 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,290 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,290 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,291 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,292 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,292 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,292 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,292 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,293 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,303 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,303 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,304 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,304 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,307 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:56,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 18:14:56,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:14:56,344 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:14:56,344 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:14:56,344 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:14:56,344 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:14:56,344 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:14:56,344 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:14:56,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:14:56,357 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:56,408 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 18:14:56,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:56,414 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 18:14:56,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 18:14:56,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-09 18:14:56,455 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2020-10-09 18:14:56,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:56,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:56,457 INFO L255 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] [2020-10-09 18:14:56,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:56,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1376710148, now seen corresponding path program 1 times [2020-10-09 18:14:56,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:56,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059014396] [2020-10-09 18:14:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:56,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:56,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:56,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:56,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059014396] [2020-10-09 18:14:56,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:56,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089600034] [2020-10-09 18:14:56,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:56,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:56,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:56,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:57,067 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:57,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 150 flow. Second operand 8 states. [2020-10-09 18:14:57,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:57,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:57,071 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:57,178 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-10-09 18:14:57,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:57,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 138 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-09 18:14:57,181 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2020-10-09 18:14:57,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 706 transitions. [2020-10-09 18:14:57,201 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2020-10-09 18:14:57,202 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 706 transitions. [2020-10-09 18:14:57,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 706 transitions. [2020-10-09 18:14:57,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:57,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 706 transitions. [2020-10-09 18:14:57,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:57,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:57,223 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:57,225 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 150 flow. Second operand 9 states and 706 transitions. [2020-10-09 18:14:57,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 204 flow [2020-10-09 18:14:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 18:14:57,235 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:57,238 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:57,239 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:57,239 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 162 flow [2020-10-09 18:14:57,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:57,240 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:57,240 INFO L255 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] [2020-10-09 18:14:57,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:14:57,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1950055099, now seen corresponding path program 1 times [2020-10-09 18:14:57,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:57,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487435243] [2020-10-09 18:14:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:57,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:57,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:57,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:57,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:57,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487435243] [2020-10-09 18:14:57,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:57,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856404594] [2020-10-09 18:14:57,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:57,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:57,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:57,755 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:57,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 162 flow. Second operand 8 states. [2020-10-09 18:14:57,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:57,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:57,756 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:57,850 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:57,850 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-09 18:14:57,851 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 82 events. 3/82 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2020-10-09 18:14:57,852 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:57,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:57,855 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:57,855 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:57,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:57,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:57,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:57,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:57,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:57,859 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:57,860 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 162 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:57,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 236 flow [2020-10-09 18:14:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 204 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:57,863 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:57,864 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2020-10-09 18:14:57,864 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:14:57,865 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 166 flow [2020-10-09 18:14:57,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:57,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:57,865 INFO L255 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] [2020-10-09 18:14:58,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:14:58,078 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash -981304954, now seen corresponding path program 1 times [2020-10-09 18:14:58,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:58,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796065969] [2020-10-09 18:14:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:58,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:58,169 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:58,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:58,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796065969] [2020-10-09 18:14:58,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:58,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:58,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944236559] [2020-10-09 18:14:58,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:58,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:58,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:58,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:58,348 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:58,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 166 flow. Second operand 8 states. [2020-10-09 18:14:58,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:58,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:58,349 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:58,453 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:58,453 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2020-10-09 18:14:58,454 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 82 events. 3/82 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 126. Up to 7 conditions per place. [2020-10-09 18:14:58,454 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:58,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 77 transitions, 242 flow [2020-10-09 18:14:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:58,457 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:58,458 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:58,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:58,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:58,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:58,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:58,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:58,462 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:58,462 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 166 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:58,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 77 transitions, 242 flow [2020-10-09 18:14:58,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 210 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:58,466 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 170 flow [2020-10-09 18:14:58,466 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2020-10-09 18:14:58,466 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2020-10-09 18:14:58,466 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 170 flow [2020-10-09 18:14:58,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:58,467 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:58,467 INFO L255 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] [2020-10-09 18:14:58,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:14:58,681 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1240123719, now seen corresponding path program 1 times [2020-10-09 18:14:58,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:58,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694304629] [2020-10-09 18:14:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:58,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:58,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:58,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:58,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694304629] [2020-10-09 18:14:58,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:58,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:58,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035708318] [2020-10-09 18:14:58,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:58,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:58,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:58,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:58,974 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 86 [2020-10-09 18:14:58,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 170 flow. Second operand 8 states. [2020-10-09 18:14:58,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:58,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 86 [2020-10-09 18:14:58,975 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:59,046 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2020-10-09 18:14:59,047 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-10-09 18:14:59,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 82 events. 3/82 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 129. Up to 7 conditions per place. [2020-10-09 18:14:59,048 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 6 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2020-10-09 18:14:59,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 77 transitions, 248 flow [2020-10-09 18:14:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 704 transitions. [2020-10-09 18:14:59,054 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2020-10-09 18:14:59,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:59,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 704 transitions. [2020-10-09 18:14:59,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:59,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:59,059 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:59,059 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 170 flow. Second operand 9 states and 704 transitions. [2020-10-09 18:14:59,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 77 transitions, 248 flow [2020-10-09 18:14:59,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 216 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:59,066 INFO L241 Difference]: Finished difference. Result has 94 places, 67 transitions, 174 flow [2020-10-09 18:14:59,067 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2020-10-09 18:14:59,067 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2020-10-09 18:14:59,067 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 174 flow [2020-10-09 18:14:59,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:59,067 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:59,067 INFO L255 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] [2020-10-09 18:14:59,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:14:59,281 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash 564898888, now seen corresponding path program 1 times [2020-10-09 18:14:59,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:59,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697138948] [2020-10-09 18:14:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:59,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:59,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:59,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:59,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697138948] [2020-10-09 18:14:59,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:59,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:59,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341695479] [2020-10-09 18:14:59,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:59,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:59,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:59,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:59,650 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:14:59,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 174 flow. Second operand 9 states. [2020-10-09 18:14:59,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:59,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:14:59,651 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:59,794 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:14:59,794 INFO L130 PetriNetUnfolder]: For 44/51 co-relation queries the response was YES. [2020-10-09 18:14:59,795 INFO L80 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 88 events. 4/88 cut-off events. For 44/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 2/90 useless extension candidates. Maximal degree in co-relation 149. Up to 7 conditions per place. [2020-10-09 18:14:59,797 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:14:59,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 277 flow [2020-10-09 18:14:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:14:59,801 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:14:59,801 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:14:59,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:14:59,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:59,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:14:59,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:59,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:59,807 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:59,807 INFO L185 Difference]: Start difference. First operand has 94 places, 67 transitions, 174 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:14:59,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 277 flow [2020-10-09 18:14:59,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 243 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:59,812 INFO L241 Difference]: Finished difference. Result has 97 places, 67 transitions, 188 flow [2020-10-09 18:14:59,813 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2020-10-09 18:14:59,813 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2020-10-09 18:14:59,813 INFO L481 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 188 flow [2020-10-09 18:14:59,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:59,813 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:59,814 INFO L255 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] [2020-10-09 18:15:00,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:15:00,021 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash -304625474, now seen corresponding path program 1 times [2020-10-09 18:15:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:00,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705250002] [2020-10-09 18:15:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 18:15:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:00,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:00,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:00,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:00,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:00,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705250002] [2020-10-09 18:15:00,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:00,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:00,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630574031] [2020-10-09 18:15:00,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:00,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:00,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:00,433 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:00,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 188 flow. Second operand 9 states. [2020-10-09 18:15:00,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:00,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:00,434 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:00,531 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2020-10-09 18:15:00,532 INFO L130 PetriNetUnfolder]: For 87/113 co-relation queries the response was YES. [2020-10-09 18:15:00,532 INFO L80 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 93 events. 4/93 cut-off events. For 87/113 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 169. Up to 7 conditions per place. [2020-10-09 18:15:00,533 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:15:00,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 79 transitions, 297 flow [2020-10-09 18:15:00,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:15:00,536 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:15:00,536 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:15:00,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:15:00,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:00,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:15:00,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:00,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:00,541 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:00,541 INFO L185 Difference]: Start difference. First operand has 97 places, 67 transitions, 188 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:15:00,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 79 transitions, 297 flow [2020-10-09 18:15:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 79 transitions, 247 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:15:00,545 INFO L241 Difference]: Finished difference. Result has 98 places, 67 transitions, 192 flow [2020-10-09 18:15:00,545 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=192, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2020-10-09 18:15:00,545 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2020-10-09 18:15:00,545 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 192 flow [2020-10-09 18:15:00,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:00,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:00,546 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-09 18:15:00,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:15:00,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1847431572, now seen corresponding path program 1 times [2020-10-09 18:15:00,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:00,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028154351] [2020-10-09 18:15:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 18:15:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:00,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:00,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:00,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:00,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:00,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028154351] [2020-10-09 18:15:00,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:00,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:00,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091944238] [2020-10-09 18:15:00,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:00,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:00,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:00,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:01,109 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:01,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 192 flow. Second operand 9 states. [2020-10-09 18:15:01,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:01,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:01,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:01,259 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2020-10-09 18:15:01,259 INFO L130 PetriNetUnfolder]: For 79/82 co-relation queries the response was YES. [2020-10-09 18:15:01,260 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 88 events. 4/88 cut-off events. For 79/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 161. Up to 7 conditions per place. [2020-10-09 18:15:01,260 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 6 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2020-10-09 18:15:01,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 79 transitions, 301 flow [2020-10-09 18:15:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 764 transitions. [2020-10-09 18:15:01,264 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8883720930232558 [2020-10-09 18:15:01,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:01,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 764 transitions. [2020-10-09 18:15:01,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:01,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:01,269 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:01,269 INFO L185 Difference]: Start difference. First operand has 98 places, 67 transitions, 192 flow. Second operand 10 states and 764 transitions. [2020-10-09 18:15:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 79 transitions, 301 flow [2020-10-09 18:15:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 79 transitions, 251 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-09 18:15:01,273 INFO L241 Difference]: Finished difference. Result has 99 places, 67 transitions, 196 flow [2020-10-09 18:15:01,273 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=67} [2020-10-09 18:15:01,274 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2020-10-09 18:15:01,274 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 67 transitions, 196 flow [2020-10-09 18:15:01,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:01,274 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:15:01,274 INFO L255 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] [2020-10-09 18:15:01,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 18:15:01,485 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:15:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:15:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash 609192252, now seen corresponding path program 1 times [2020-10-09 18:15:01,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:15:01,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44357317] [2020-10-09 18:15:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-09 18:15:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:15:01,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:15:01,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:15:01,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:15:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:01,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:15:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:15:01,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44357317] [2020-10-09 18:15:01,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:15:01,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:15:01,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023507773] [2020-10-09 18:15:01,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:15:01,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:15:01,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:15:01,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:15:01,819 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2020-10-09 18:15:01,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 67 transitions, 196 flow. Second operand 9 states. [2020-10-09 18:15:01,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:15:01,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2020-10-09 18:15:01,821 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:15:01,935 INFO L129 PetriNetUnfolder]: 4/73 cut-off events. [2020-10-09 18:15:01,935 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-09 18:15:01,936 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 73 events. 4/73 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 133. Up to 5 conditions per place. [2020-10-09 18:15:01,936 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2020-10-09 18:15:01,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 72 transitions, 254 flow [2020-10-09 18:15:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:15:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:15:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 758 transitions. [2020-10-09 18:15:01,940 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8813953488372093 [2020-10-09 18:15:01,940 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 758 transitions. [2020-10-09 18:15:01,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 758 transitions. [2020-10-09 18:15:01,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:15:01,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 758 transitions. [2020-10-09 18:15:01,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:15:01,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:15:01,945 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:15:01,945 INFO L185 Difference]: Start difference. First operand has 99 places, 67 transitions, 196 flow. Second operand 10 states and 758 transitions. [2020-10-09 18:15:01,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 72 transitions, 254 flow [2020-10-09 18:15:01,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 72 transitions, 220 flow, removed 12 selfloop flow, removed 8 redundant places. [2020-10-09 18:15:01,947 INFO L241 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2020-10-09 18:15:01,947 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2020-10-09 18:15:01,948 INFO L341 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2020-10-09 18:15:01,948 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2020-10-09 18:15:01,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:15:02,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-09 18:15:02,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:15:02 BasicIcfg [2020-10-09 18:15:02,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:15:02,171 INFO L168 Benchmark]: Toolchain (without parser) took 7211.59 ms. Allocated memory was 252.7 MB in the beginning and 429.9 MB in the end (delta: 177.2 MB). Free memory was 208.5 MB in the beginning and 332.7 MB in the end (delta: -124.2 MB). Peak memory consumption was 53.0 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,172 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:15:02,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.26 ms. Allocated memory was 252.7 MB in the beginning and 317.2 MB in the end (delta: 64.5 MB). Free memory was 208.5 MB in the beginning and 270.5 MB in the end (delta: -62.0 MB). Peak memory consumption was 27.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 317.2 MB. Free memory was 270.5 MB in the beginning and 268.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,174 INFO L168 Benchmark]: Boogie Preprocessor took 26.96 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,175 INFO L168 Benchmark]: RCFGBuilder took 438.38 ms. Allocated memory is still 317.2 MB. Free memory was 265.5 MB in the beginning and 241.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,176 INFO L168 Benchmark]: TraceAbstraction took 5937.47 ms. Allocated memory was 317.2 MB in the beginning and 429.9 MB in the end (delta: 112.7 MB). Free memory was 241.1 MB in the beginning and 332.7 MB in the end (delta: -91.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:15:02,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 760.26 ms. Allocated memory was 252.7 MB in the beginning and 317.2 MB in the end (delta: 64.5 MB). Free memory was 208.5 MB in the beginning and 270.5 MB in the end (delta: -62.0 MB). Peak memory consumption was 27.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 42.08 ms. Allocated memory is still 317.2 MB. Free memory was 270.5 MB in the beginning and 268.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.96 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 438.38 ms. Allocated memory is still 317.2 MB. Free memory was 265.5 MB in the beginning and 241.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5937.47 ms. Allocated memory was 317.2 MB in the beginning and 429.9 MB in the end (delta: 112.7 MB). Free memory was 241.1 MB in the beginning and 332.7 MB in the end (delta: -91.6 MB). Peak memory consumption was 21.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 331 SDslu, 647 SDs, 0 SdLazy, 464 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 820 GetRequests, 700 SyntacticMatches, 20 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 772 ConstructedInterpolants, 0 QuantifiedInterpolants, 108762 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...