/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:11:54,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:11:54,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:11:54,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:11:54,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:11:54,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:11:54,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:11:54,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:11:54,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:11:54,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:11:54,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:11:54,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:11:54,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:11:54,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:11:54,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:11:54,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:11:54,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:11:54,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:11:54,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:11:54,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:11:54,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:11:54,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:11:54,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:11:54,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:11:54,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 01:11:54,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 01:11:54,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 01:11:54,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 01:11:54,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 01:11:54,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 01:11:54,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:11:54,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:11:54,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:11:54,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:11:54,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:11:54,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:11:54,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:11:54,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:11:54,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:11:54,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:11:54,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:11:54,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 01:11:54,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:11:54,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:11:54,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:11:54,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:11:54,718 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:11:54,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:11:54,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:11:54,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:11:54,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:11:54,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:11:54,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:11:54,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:11:54,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:11:54,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:11:54,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:11:54,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:11:54,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:11:54,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:11:54,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:11:54,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:11:54,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:11:54,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:11:54,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:11:54,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:11:54,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:11:54,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:11:54,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:11:54,724 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:11:54,724 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:11:54,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:11:54,725 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:11:55,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:11:55,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:11:55,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:11:55,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:11:55,201 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:11:55,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_power.opt.i [2020-09-16 01:11:55,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed493df7b/f8216dc9f37f4affa818f0cfd8974934/FLAG6983b0fbf [2020-09-16 01:11:55,876 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:11:55,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe036_power.opt.i [2020-09-16 01:11:55,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed493df7b/f8216dc9f37f4affa818f0cfd8974934/FLAG6983b0fbf [2020-09-16 01:11:56,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed493df7b/f8216dc9f37f4affa818f0cfd8974934 [2020-09-16 01:11:56,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:11:56,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:11:56,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:56,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:11:56,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:11:56,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:56,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56, skipping insertion in model container [2020-09-16 01:11:56,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:56,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:11:56,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:11:56,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:56,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:11:56,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:11:56,935 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:11:56,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56 WrapperNode [2020-09-16 01:11:56,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:11:56,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:56,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:11:56,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:11:56,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:56,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:56,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:11:56,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:11:56,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:11:56,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:11:57,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... [2020-09-16 01:11:57,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:11:57,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:11:57,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:11:57,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:11:57,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:11:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:11:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:11:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:11:57,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:11:57,120 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:11:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:11:57,120 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:11:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:11:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:11:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:11:57,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:11:57,123 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:11:57,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:11:57,518 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:11:57,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:57 BoogieIcfgContainer [2020-09-16 01:11:57,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:11:57,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:11:57,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:11:57,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:11:57,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:11:56" (1/3) ... [2020-09-16 01:11:57,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f1e61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:57, skipping insertion in model container [2020-09-16 01:11:57,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:11:56" (2/3) ... [2020-09-16 01:11:57,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f1e61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:11:57, skipping insertion in model container [2020-09-16 01:11:57,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:11:57" (3/3) ... [2020-09-16 01:11:57,533 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_power.opt.i [2020-09-16 01:11:57,545 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:11:57,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:11:57,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:11:57,555 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:11:57,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,588 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:11:57,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 01:11:57,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:11:57,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:11:57,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:11:57,643 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:11:57,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:11:57,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:11:57,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:11:57,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:11:57,659 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:57,661 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:57,702 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:11:57,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:57,709 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:11:57,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-09-16 01:11:57,731 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-09-16 01:11:57,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:11:57,733 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 01:11:57,735 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-16 01:11:57,736 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:11:58,991 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-09-16 01:11:58,991 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-16 01:11:58,998 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-16 01:11:59,023 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-16 01:11:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-16 01:11:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 01:11:59,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:59,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 01:11:59,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-09-16 01:11:59,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:59,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661717613] [2020-09-16 01:11:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:59,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661717613] [2020-09-16 01:11:59,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:59,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:11:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1695360615] [2020-09-16 01:11:59,372 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:59,376 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:59,391 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-16 01:11:59,392 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:59,394 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:59,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:59,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:59,416 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-16 01:11:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:59,469 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-09-16 01:11:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:11:59,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-09-16 01:11:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:59,483 INFO L225 Difference]: With dead ends: 63 [2020-09-16 01:11:59,483 INFO L226 Difference]: Without dead ends: 40 [2020-09-16 01:11:59,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-16 01:11:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-16 01:11:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-16 01:11:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-09-16 01:11:59,529 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-09-16 01:11:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:59,530 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-09-16 01:11:59,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-09-16 01:11:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 01:11:59,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:59,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:59,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:11:59,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-09-16 01:11:59,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:59,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805696000] [2020-09-16 01:11:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:59,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805696000] [2020-09-16 01:11:59,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:59,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:59,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1141885342] [2020-09-16 01:11:59,628 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:59,629 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:59,632 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-16 01:11:59,632 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:59,633 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:59,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:11:59,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:59,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:11:59,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:59,635 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-09-16 01:11:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:59,691 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-09-16 01:11:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:11:59,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-16 01:11:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:59,692 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:11:59,693 INFO L226 Difference]: Without dead ends: 28 [2020-09-16 01:11:59,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:11:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-16 01:11:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-16 01:11:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-16 01:11:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-09-16 01:11:59,703 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-09-16 01:11:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:59,703 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-09-16 01:11:59,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:11:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-09-16 01:11:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:11:59,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:59,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:59,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:11:59,707 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-09-16 01:11:59,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:59,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665053539] [2020-09-16 01:11:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:59,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665053539] [2020-09-16 01:11:59,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:59,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:59,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1162148441] [2020-09-16 01:11:59,811 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:59,813 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:59,817 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-09-16 01:11:59,817 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:59,831 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:59,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:59,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:59,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:59,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:59,833 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-09-16 01:11:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:59,849 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-09-16 01:11:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:59,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:11:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:59,850 INFO L225 Difference]: With dead ends: 35 [2020-09-16 01:11:59,850 INFO L226 Difference]: Without dead ends: 22 [2020-09-16 01:11:59,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-16 01:11:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-16 01:11:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-16 01:11:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-16 01:11:59,855 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-09-16 01:11:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:59,855 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-16 01:11:59,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-16 01:11:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:11:59,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:11:59,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:11:59,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:11:59,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:11:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:11:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-09-16 01:11:59,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:11:59,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600782767] [2020-09-16 01:11:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:11:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:11:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:11:59,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600782767] [2020-09-16 01:11:59,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:11:59,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:11:59,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1637531023] [2020-09-16 01:11:59,916 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:11:59,917 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:11:59,920 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-16 01:11:59,920 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:11:59,967 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:11:59,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:11:59,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:11:59,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:11:59,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:11:59,969 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-09-16 01:11:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:11:59,982 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-16 01:11:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:11:59,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:11:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:11:59,983 INFO L225 Difference]: With dead ends: 21 [2020-09-16 01:11:59,983 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:11:59,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:11:59,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:11:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:11:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:11:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:11:59,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-16 01:11:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:11:59,985 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:11:59,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:11:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:11:59,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:11:59,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:11:59,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:11:59 BasicIcfg [2020-09-16 01:11:59,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:11:59,993 INFO L168 Benchmark]: Toolchain (without parser) took 3827.50 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 102.0 MB in the beginning and 159.5 MB in the end (delta: -57.5 MB). Peak memory consumption was 48.9 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,994 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.98 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 162.3 MB in the end (delta: -61.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,997 INFO L168 Benchmark]: Boogie Preprocessor took 27.19 ms. Allocated memory is still 204.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,998 INFO L168 Benchmark]: RCFGBuilder took 500.40 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 139.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-16 01:11:59,999 INFO L168 Benchmark]: TraceAbstraction took 2465.06 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 138.3 MB in the beginning and 159.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-09-16 01:12:00,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.98 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 162.3 MB in the end (delta: -61.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.62 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 160.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.19 ms. Allocated memory is still 204.5 MB. Free memory was 160.3 MB in the beginning and 159.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.40 ms. Allocated memory is still 204.5 MB. Free memory was 159.0 MB in the beginning and 139.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2465.06 ms. Allocated memory was 204.5 MB in the beginning and 246.4 MB in the end (delta: 41.9 MB). Free memory was 138.3 MB in the beginning and 159.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 360 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 56 SDtfs, 43 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...