/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/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:12:44,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:12:44,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:12:44,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:12:44,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:12:44,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:12:44,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:12:44,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:12:44,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:12:44,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:12:44,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:12:44,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:12:44,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:12:44,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:12:44,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:12:44,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:12:44,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:12:44,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:12:44,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:12:44,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:12:44,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:12:44,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:12:44,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:12:44,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:12:44,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:12:44,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:12:44,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:12:44,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:12:44,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:12:44,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:12:44,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:12:44,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:12:44,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:12:44,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:12:44,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:12:44,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:12:44,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:12:44,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:12:44,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:12:44,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:12:44,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:12:44,631 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 18:12:44,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:12:44,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:12:44,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:12:44,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:12:44,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:12:44,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:12:44,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:12:44,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:12:44,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:12:44,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:12:44,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:12:44,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:12:44,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:12:44,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:12:44,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:12:44,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:12:44,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:12:44,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:12:44,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:12:44,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:12:44,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:12:44,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:12:44,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:12:44,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:12:44,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:12:44,677 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:12:44,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:12:44,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:12:44,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:12:44,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:12:44,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:12:44,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:12:45,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:12:45,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:12:45,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:12:45,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-09 18:12:45,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6001a0/d13ae6f00e2b4969b6bd15e19733d6f4/FLAG3bbab3b62 [2020-10-09 18:12:45,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:12:45,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-09 18:12:45,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6001a0/d13ae6f00e2b4969b6bd15e19733d6f4/FLAG3bbab3b62 [2020-10-09 18:12:45,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6001a0/d13ae6f00e2b4969b6bd15e19733d6f4 [2020-10-09 18:12:45,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:12:45,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:12:45,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:12:45,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:12:45,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:12:45,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:12:45" (1/1) ... [2020-10-09 18:12:45,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2993046f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:45, skipping insertion in model container [2020-10-09 18:12:45,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:12:45" (1/1) ... [2020-10-09 18:12:45,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:12:45,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:12:46,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:12:46,426 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:12:46,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:12:46,603 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:12:46,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46 WrapperNode [2020-10-09 18:12:46,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:12:46,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:12:46,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:12:46,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:12:46,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:12:46,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:12:46,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:12:46,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:12:46,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (1/1) ... [2020-10-09 18:12:46,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:12:46,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:12:46,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:12:46,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:12:46,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (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 18:12:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:12:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:12:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:12:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:12:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:12:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:12:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:12:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:12:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 18:12:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 18:12:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:12:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:12:46,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:12:46,765 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 18:12:47,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:12:47,129 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:12:47,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:12:47 BoogieIcfgContainer [2020-10-09 18:12:47,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:12:47,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:12:47,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:12:47,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:12:47,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:12:45" (1/3) ... [2020-10-09 18:12:47,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecd29e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:12:47, skipping insertion in model container [2020-10-09 18:12:47,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:12:46" (2/3) ... [2020-10-09 18:12:47,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecd29e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:12:47, skipping insertion in model container [2020-10-09 18:12:47,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:12:47" (3/3) ... [2020-10-09 18:12:47,140 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-09 18:12:47,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:12:47,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:12:47,161 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:12:47,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,191 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,192 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,206 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,206 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,211 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,211 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:12:47,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 18:12:47,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:12:47,252 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:12:47,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:12:47,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:12:47,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:12:47,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:12:47,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:12:47,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:12:47,268 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 18:12:47,314 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-09 18:12:47,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:12:47,319 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 18:12:47,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 18:12:47,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-09 18:12:47,352 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-09 18:12:47,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:12:47,353 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:47,354 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] [2020-10-09 18:12:47,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:47,361 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 1 times [2020-10-09 18:12:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:47,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685454215] [2020-10-09 18:12:47,376 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 18:12:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:12:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:12:47,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:47,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:47,614 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 18:12:47,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:47,683 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 18:12:47,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685454215] [2020-10-09 18:12:47,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:47,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:12:47,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876780533] [2020-10-09 18:12:47,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:12:47,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:47,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:12:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:12:48,088 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-09 18:12:48,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 8 states. [2020-10-09 18:12:48,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:48,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-09 18:12:48,093 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:48,266 INFO L129 PetriNetUnfolder]: 18/150 cut-off events. [2020-10-09 18:12:48,266 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:12:48,268 INFO L80 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 150 events. 18/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 553 event pairs, 0 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 195. Up to 15 conditions per place. [2020-10-09 18:12:48,270 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 10 selfloop transitions, 5 changer transitions 24/84 dead transitions. [2020-10-09 18:12:48,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 253 flow [2020-10-09 18:12:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 18:12:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 18:12:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 811 transitions. [2020-10-09 18:12:48,292 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8912087912087913 [2020-10-09 18:12:48,293 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 811 transitions. [2020-10-09 18:12:48,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 811 transitions. [2020-10-09 18:12:48,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:48,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 811 transitions. [2020-10-09 18:12:48,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 18:12:48,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 18:12:48,313 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 18:12:48,316 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 13 states and 811 transitions. [2020-10-09 18:12:48,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 253 flow [2020-10-09 18:12:48,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 250 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 18:12:48,326 INFO L241 Difference]: Finished difference. Result has 85 places, 56 transitions, 156 flow [2020-10-09 18:12:48,329 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=156, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2020-10-09 18:12:48,330 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-09 18:12:48,330 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 156 flow [2020-10-09 18:12:48,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:12:48,330 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:48,331 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] [2020-10-09 18:12:48,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:12:48,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2019531658, now seen corresponding path program 1 times [2020-10-09 18:12:48,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:48,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323699753] [2020-10-09 18:12:48,551 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 18:12:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:12:48,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:12:48,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:48,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:48,669 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 18:12:48,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:48,718 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 18:12:48,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323699753] [2020-10-09 18:12:48,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:48,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:12:48,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47265764] [2020-10-09 18:12:48,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:12:48,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:48,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:12:48,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:12:48,895 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 18:12:48,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 156 flow. Second operand 8 states. [2020-10-09 18:12:48,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:48,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 18:12:48,897 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:49,004 INFO L129 PetriNetUnfolder]: 6/105 cut-off events. [2020-10-09 18:12:49,004 INFO L130 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2020-10-09 18:12:49,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 105 events. 6/105 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 284 event pairs, 0 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 184. Up to 10 conditions per place. [2020-10-09 18:12:49,007 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 12/66 dead transitions. [2020-10-09 18:12:49,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 66 transitions, 240 flow [2020-10-09 18:12:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:12:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:12:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-09 18:12:49,010 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-09 18:12:49,010 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-09 18:12:49,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-09 18:12:49,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:49,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-09 18:12:49,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:12:49,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:12:49,014 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:12:49,014 INFO L185 Difference]: Start difference. First operand has 85 places, 56 transitions, 156 flow. Second operand 9 states and 560 transitions. [2020-10-09 18:12:49,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 66 transitions, 240 flow [2020-10-09 18:12:49,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 198 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 18:12:49,021 INFO L241 Difference]: Finished difference. Result has 81 places, 54 transitions, 148 flow [2020-10-09 18:12:49,021 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=148, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2020-10-09 18:12:49,022 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2020-10-09 18:12:49,022 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 148 flow [2020-10-09 18:12:49,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:12:49,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:49,022 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] [2020-10-09 18:12:49,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:12:49,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2001412253, now seen corresponding path program 1 times [2020-10-09 18:12:49,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:49,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551056562] [2020-10-09 18:12:49,237 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 18:12:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:12:49,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:12:49,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:49,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:49,341 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:49,365 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 18:12:49,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:49,421 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 18:12:49,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551056562] [2020-10-09 18:12:49,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:49,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2020-10-09 18:12:49,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052217785] [2020-10-09 18:12:49,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:12:49,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:12:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:12:49,746 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:12:49,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 148 flow. Second operand 9 states. [2020-10-09 18:12:49,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:49,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:12:49,748 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:49,819 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2020-10-09 18:12:49,819 INFO L130 PetriNetUnfolder]: For 31/51 co-relation queries the response was YES. [2020-10-09 18:12:49,820 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 67 events. 0/67 cut-off events. For 31/51 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2020-10-09 18:12:49,820 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 5/59 dead transitions. [2020-10-09 18:12:49,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 59 transitions, 207 flow [2020-10-09 18:12:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 18:12:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-09 18:12:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2020-10-09 18:12:49,824 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8446428571428571 [2020-10-09 18:12:49,824 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2020-10-09 18:12:49,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2020-10-09 18:12:49,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:49,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2020-10-09 18:12:49,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-09 18:12:49,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-09 18:12:49,829 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-09 18:12:49,829 INFO L185 Difference]: Start difference. First operand has 81 places, 54 transitions, 148 flow. Second operand 8 states and 473 transitions. [2020-10-09 18:12:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 59 transitions, 207 flow [2020-10-09 18:12:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 171 flow, removed 12 selfloop flow, removed 11 redundant places. [2020-10-09 18:12:49,835 INFO L241 Difference]: Finished difference. Result has 76 places, 54 transitions, 139 flow [2020-10-09 18:12:49,835 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=139, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2020-10-09 18:12:49,835 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 11 predicate places. [2020-10-09 18:12:49,835 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 139 flow [2020-10-09 18:12:49,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:12:49,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:49,836 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] [2020-10-09 18:12:50,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:12:50,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1599675751, now seen corresponding path program 2 times [2020-10-09 18:12:50,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:50,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840905470] [2020-10-09 18:12:50,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 18:12:50,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 18:12:50,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:12:50,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 18:12:50,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:50,125 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:50,172 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 18:12:50,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:50,200 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 18:12:50,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840905470] [2020-10-09 18:12:50,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:50,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:12:50,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730236522] [2020-10-09 18:12:50,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:12:50,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:12:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:12:50,282 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:12:50,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 139 flow. Second operand 8 states. [2020-10-09 18:12:50,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:50,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:12:50,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:50,511 INFO L129 PetriNetUnfolder]: 76/266 cut-off events. [2020-10-09 18:12:50,512 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-09 18:12:50,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 266 events. 76/266 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1325 event pairs, 0 based on Foata normal form. 10/266 useless extension candidates. Maximal degree in co-relation 444. Up to 41 conditions per place. [2020-10-09 18:12:50,517 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 29/92 dead transitions. [2020-10-09 18:12:50,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 311 flow [2020-10-09 18:12:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 18:12:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 18:12:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 735 transitions. [2020-10-09 18:12:50,520 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.875 [2020-10-09 18:12:50,521 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 735 transitions. [2020-10-09 18:12:50,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 735 transitions. [2020-10-09 18:12:50,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:50,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 735 transitions. [2020-10-09 18:12:50,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 18:12:50,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 18:12:50,525 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 18:12:50,525 INFO L185 Difference]: Start difference. First operand has 76 places, 54 transitions, 139 flow. Second operand 12 states and 735 transitions. [2020-10-09 18:12:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 311 flow [2020-10-09 18:12:50,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 92 transitions, 300 flow, removed 4 selfloop flow, removed 6 redundant places. [2020-10-09 18:12:50,531 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 226 flow [2020-10-09 18:12:50,531 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2020-10-09 18:12:50,531 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-09 18:12:50,531 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 226 flow [2020-10-09 18:12:50,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:12:50,531 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:50,532 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] [2020-10-09 18:12:50,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:12:50,743 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash -825029141, now seen corresponding path program 1 times [2020-10-09 18:12:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:50,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028689988] [2020-10-09 18:12:50,745 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 18:12:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:12:50,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 18:12:50,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:50,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:50,854 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 18:12:50,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:50,891 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 18:12:50,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028689988] [2020-10-09 18:12:50,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:50,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 18:12:50,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232184300] [2020-10-09 18:12:50,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 18:12:50,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 18:12:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 18:12:51,059 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:12:51,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 226 flow. Second operand 10 states. [2020-10-09 18:12:51,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:51,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:12:51,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:51,187 INFO L129 PetriNetUnfolder]: 17/113 cut-off events. [2020-10-09 18:12:51,187 INFO L130 PetriNetUnfolder]: For 363/381 co-relation queries the response was YES. [2020-10-09 18:12:51,188 INFO L80 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 113 events. 17/113 cut-off events. For 363/381 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 299 event pairs, 0 based on Foata normal form. 17/129 useless extension candidates. Maximal degree in co-relation 333. Up to 30 conditions per place. [2020-10-09 18:12:51,188 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-09 18:12:51,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 73 transitions, 409 flow [2020-10-09 18:12:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 18:12:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 18:12:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-09 18:12:51,194 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-09 18:12:51,194 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-09 18:12:51,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-09 18:12:51,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:51,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-09 18:12:51,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 18:12:51,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 18:12:51,198 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 18:12:51,198 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 226 flow. Second operand 11 states and 658 transitions. [2020-10-09 18:12:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 73 transitions, 409 flow [2020-10-09 18:12:51,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 315 flow, removed 40 selfloop flow, removed 9 redundant places. [2020-10-09 18:12:51,202 INFO L241 Difference]: Finished difference. Result has 87 places, 60 transitions, 228 flow [2020-10-09 18:12:51,203 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2020-10-09 18:12:51,203 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2020-10-09 18:12:51,203 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 228 flow [2020-10-09 18:12:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 18:12:51,203 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:51,204 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] [2020-10-09 18:12:51,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:12:51,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash 808584283, now seen corresponding path program 1 times [2020-10-09 18:12:51,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:51,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648433373] [2020-10-09 18:12:51,418 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 18:12:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:12:51,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:12:51,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:51,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:51,518 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 18:12:51,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:51,567 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 18:12:51,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648433373] [2020-10-09 18:12:51,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:51,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:12:51,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339854288] [2020-10-09 18:12:51,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:12:51,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:12:51,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:12:51,782 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 18:12:51,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 228 flow. Second operand 9 states. [2020-10-09 18:12:51,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:51,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 18:12:51,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:51,874 INFO L129 PetriNetUnfolder]: 15/143 cut-off events. [2020-10-09 18:12:51,874 INFO L130 PetriNetUnfolder]: For 143/150 co-relation queries the response was YES. [2020-10-09 18:12:51,875 INFO L80 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 143 events. 15/143 cut-off events. For 143/150 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 510 event pairs, 0 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 300. Up to 27 conditions per place. [2020-10-09 18:12:51,876 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 6/66 dead transitions. [2020-10-09 18:12:51,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 277 flow [2020-10-09 18:12:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:12:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:12:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-09 18:12:51,878 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-09 18:12:51,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-09 18:12:51,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-09 18:12:51,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:51,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-09 18:12:51,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:12:51,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:12:51,883 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:12:51,883 INFO L185 Difference]: Start difference. First operand has 87 places, 60 transitions, 228 flow. Second operand 7 states and 417 transitions. [2020-10-09 18:12:51,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 277 flow [2020-10-09 18:12:51,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 201 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-09 18:12:51,888 INFO L241 Difference]: Finished difference. Result has 79 places, 60 transitions, 165 flow [2020-10-09 18:12:51,888 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2020-10-09 18:12:51,888 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-09 18:12:51,889 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 165 flow [2020-10-09 18:12:51,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:12:51,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:12:51,889 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] [2020-10-09 18:12:52,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:12:52,106 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:12:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:12:52,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1467591225, now seen corresponding path program 2 times [2020-10-09 18:12:52,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:12:52,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288456903] [2020-10-09 18:12:52,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 18:12:52,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 18:12:52,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 18:12:52,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:12:52,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:12:52,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:12:52,239 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 18:12:52,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:12:52,285 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 18:12:52,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288456903] [2020-10-09 18:12:52,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:12:52,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:12:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999727411] [2020-10-09 18:12:52,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:12:52,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:12:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:12:52,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:12:52,460 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 18:12:52,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 165 flow. Second operand 9 states. [2020-10-09 18:12:52,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:12:52,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 18:12:52,462 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:12:52,548 INFO L129 PetriNetUnfolder]: 8/111 cut-off events. [2020-10-09 18:12:52,548 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-09 18:12:52,549 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 111 events. 8/111 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 345 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 172. Up to 12 conditions per place. [2020-10-09 18:12:52,549 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-09 18:12:52,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 181 flow [2020-10-09 18:12:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 18:12:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 18:12:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-09 18:12:52,552 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-09 18:12:52,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-09 18:12:52,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-09 18:12:52,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:12:52,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-09 18:12:52,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 18:12:52,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 18:12:52,555 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 18:12:52,556 INFO L185 Difference]: Start difference. First operand has 79 places, 60 transitions, 165 flow. Second operand 7 states and 417 transitions. [2020-10-09 18:12:52,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 181 flow [2020-10-09 18:12:52,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-09 18:12:52,574 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-09 18:12:52,575 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-09 18:12:52,575 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-09 18:12:52,575 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-09 18:12:52,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:12:52,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 18:12:52,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:12:52 BasicIcfg [2020-10-09 18:12:52,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:12:52,797 INFO L168 Benchmark]: Toolchain (without parser) took 6894.90 ms. Allocated memory was 252.2 MB in the beginning and 421.0 MB in the end (delta: 168.8 MB). Free memory was 205.0 MB in the beginning and 390.9 MB in the end (delta: -185.9 MB). Peak memory consumption was 196.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:12:52,797 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:12:52,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.46 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 205.0 MB in the beginning and 270.4 MB in the end (delta: -65.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:12:52,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 317.7 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:12:52,800 INFO L168 Benchmark]: Boogie Preprocessor took 25.72 ms. Allocated memory is still 317.7 MB. Free memory was 270.4 MB in the beginning and 267.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:12:52,800 INFO L168 Benchmark]: RCFGBuilder took 450.45 ms. Allocated memory is still 317.7 MB. Free memory was 267.9 MB in the beginning and 246.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:12:52,801 INFO L168 Benchmark]: TraceAbstraction took 5662.09 ms. Allocated memory was 317.7 MB in the beginning and 421.0 MB in the end (delta: 103.3 MB). Free memory was 243.6 MB in the beginning and 390.9 MB in the end (delta: -147.3 MB). Peak memory consumption was 169.2 MB. Max. memory is 14.2 GB. [2020-10-09 18:12:52,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 703.46 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 205.0 MB in the beginning and 270.4 MB in the end (delta: -65.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 317.7 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.72 ms. Allocated memory is still 317.7 MB. Free memory was 270.4 MB in the beginning and 267.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 450.45 ms. Allocated memory is still 317.7 MB. Free memory was 267.9 MB in the beginning and 246.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5662.09 ms. Allocated memory was 317.7 MB in the beginning and 421.0 MB in the end (delta: 103.3 MB). Free memory was 243.6 MB in the beginning and 390.9 MB in the end (delta: -147.3 MB). Peak memory consumption was 169.2 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 4 procedures, 69 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: 5.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 284 SDslu, 538 SDs, 0 SdLazy, 494 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 617 GetRequests, 516 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=5, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 56655 SizeOfPredicates, 57 NumberOfNonLiveVariables, 758 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...