/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:15:18,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:15:18,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:15:18,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:15:18,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:15:18,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:15:18,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:15:18,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:15:18,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:15:18,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:15:18,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:15:18,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:15:18,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:15:18,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:15:18,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:15:18,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:15:18,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:15:18,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:15:18,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:15:18,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:15:18,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:15:18,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:15:18,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:15:18,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:15:18,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:15:18,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:15:18,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:15:18,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:15:18,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:15:18,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:15:18,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:15:18,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:15:18,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:15:18,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:15:18,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:15:18,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:15:18,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:15:18,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:15:18,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:15:18,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:15:18,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:15:18,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:15:18,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:15:18,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:15:18,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:15:18,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:15:18,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:15:18,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:15:18,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:15:18,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:15:18,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:15:18,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:15:18,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:15:18,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:15:18,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:15:18,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:15:18,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:15:18,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:15:18,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:15:18,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:15:18,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:15:18,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:15:18,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:15:18,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:15:18,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:15:18,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:15:18,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:15:18,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:15:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:15:18,981 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:15:18,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:15:18,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:15:18,981 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:15:19,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:15:19,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:15:19,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:15:19,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:15:19,315 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:15:19,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-22 02:15:19,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea591cdb1/7bfbd71e4e764be194ce60b9c24fb15b/FLAGff8f9c95c [2020-10-22 02:15:19,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:15:19,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-22 02:15:19,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea591cdb1/7bfbd71e4e764be194ce60b9c24fb15b/FLAGff8f9c95c [2020-10-22 02:15:20,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea591cdb1/7bfbd71e4e764be194ce60b9c24fb15b [2020-10-22 02:15:20,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:15:20,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:15:20,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:20,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:15:20,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:15:20,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:20" (1/1) ... [2020-10-22 02:15:20,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6a5181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:20, skipping insertion in model container [2020-10-22 02:15:20,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:20" (1/1) ... [2020-10-22 02:15:20,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:15:20,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:15:20,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:20,881 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:15:20,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:21,012 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:15:21,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21 WrapperNode [2020-10-22 02:15:21,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:21,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:21,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:15:21,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:15:21,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:21,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:15:21,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:15:21,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:15:21,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (1/1) ... [2020-10-22 02:15:21,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:15:21,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:15:21,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:15:21,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:15:21,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (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 [2020-10-22 02:15:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:15:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:15:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:15:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:15:21,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:15:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:15:21,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:15:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:15:21,172 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:15:21,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:15:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:15:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:15:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:15:21,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:15:21,176 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:15:21,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:15:21,570 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:15:21,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:21 BoogieIcfgContainer [2020-10-22 02:15:21,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:15:21,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:15:21,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:15:21,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:15:21,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:15:20" (1/3) ... [2020-10-22 02:15:21,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5f576f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:21, skipping insertion in model container [2020-10-22 02:15:21,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:21" (2/3) ... [2020-10-22 02:15:21,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5f576f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:21, skipping insertion in model container [2020-10-22 02:15:21,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:21" (3/3) ... [2020-10-22 02:15:21,585 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-22 02:15:21,595 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:15:21,595 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:15:21,602 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:15:21,603 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:15:21,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,647 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,656 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,656 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,665 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,665 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,666 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:21,668 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:15:21,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:15:21,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:15:21,705 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:15:21,706 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:15:21,706 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:15:21,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:15:21,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:15:21,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:15:21,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:15:21,722 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:15:21,723 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:15:21,725 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:15:21,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-22 02:15:21,776 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-22 02:15:21,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:15:21,782 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:15:21,785 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:15:23,038 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-22 02:15:23,382 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-22 02:15:23,488 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-22 02:15:23,515 INFO L131 LiptonReduction]: Checked pairs total: 2822 [2020-10-22 02:15:23,515 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 02:15:23,523 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-22 02:15:23,553 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-22 02:15:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-22 02:15:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:15:23,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:23,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:23,566 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash 406549293, now seen corresponding path program 1 times [2020-10-22 02:15:23,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:23,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262006432] [2020-10-22 02:15:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:23,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262006432] [2020-10-22 02:15:23,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:23,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:23,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [807791602] [2020-10-22 02:15:23,802 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:23,805 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:23,820 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:15:23,820 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:23,825 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:23,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:15:23,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:23,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:15:23,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:15:23,844 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-22 02:15:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:23,868 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-22 02:15:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:15:23,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:15:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:23,888 INFO L225 Difference]: With dead ends: 362 [2020-10-22 02:15:23,888 INFO L226 Difference]: Without dead ends: 298 [2020-10-22 02:15:23,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:15:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-22 02:15:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-22 02:15:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-22 02:15:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-22 02:15:23,971 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-22 02:15:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:23,973 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-22 02:15:23,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:15:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-22 02:15:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:15:23,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:23,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:23,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:15:23,975 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash -281880887, now seen corresponding path program 1 times [2020-10-22 02:15:23,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:23,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986147194] [2020-10-22 02:15:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:24,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986147194] [2020-10-22 02:15:24,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:24,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:24,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [979194980] [2020-10-22 02:15:24,082 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:24,083 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:24,085 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:15:24,085 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:24,085 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:24,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:24,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:24,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:24,088 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-22 02:15:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:24,107 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-22 02:15:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:24,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 02:15:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:24,110 INFO L225 Difference]: With dead ends: 217 [2020-10-22 02:15:24,111 INFO L226 Difference]: Without dead ends: 217 [2020-10-22 02:15:24,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-22 02:15:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-22 02:15:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-22 02:15:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-22 02:15:24,134 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-22 02:15:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:24,135 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-22 02:15:24,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-22 02:15:24,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:24,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:24,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:24,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:15:24,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -389577111, now seen corresponding path program 1 times [2020-10-22 02:15:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:24,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016928861] [2020-10-22 02:15:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:24,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016928861] [2020-10-22 02:15:24,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:24,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:24,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1541039440] [2020-10-22 02:15:24,267 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:24,268 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:24,272 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 02:15:24,273 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:24,486 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2431#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:15:24,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:15:24,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:24,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:15:24,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:24,488 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-10-22 02:15:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:24,516 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-22 02:15:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:24,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:15:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:24,518 INFO L225 Difference]: With dead ends: 136 [2020-10-22 02:15:24,518 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 02:15:24,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 02:15:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-22 02:15:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-22 02:15:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-22 02:15:24,530 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-22 02:15:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:24,530 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-22 02:15:24,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:15:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-22 02:15:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:15:24,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:24,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:24,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:15:24,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:24,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1823296511, now seen corresponding path program 1 times [2020-10-22 02:15:24,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:24,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671504977] [2020-10-22 02:15:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:24,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671504977] [2020-10-22 02:15:24,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:24,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:15:24,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1051909633] [2020-10-22 02:15:24,636 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:24,638 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:24,642 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 47 transitions. [2020-10-22 02:15:24,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:24,800 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2845#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:15:24,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:15:24,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:24,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:15:24,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:15:24,802 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-10-22 02:15:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:24,834 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-22 02:15:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:15:24,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 02:15:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:24,836 INFO L225 Difference]: With dead ends: 109 [2020-10-22 02:15:24,836 INFO L226 Difference]: Without dead ends: 109 [2020-10-22 02:15:24,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:15:24,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-22 02:15:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-22 02:15:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-22 02:15:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-22 02:15:24,844 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-22 02:15:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:24,844 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-22 02:15:24,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:15:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-22 02:15:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:15:24,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:24,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:24,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:15:24,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:24,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1915158341, now seen corresponding path program 1 times [2020-10-22 02:15:24,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:24,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665261892] [2020-10-22 02:15:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:24,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665261892] [2020-10-22 02:15:24,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:24,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:24,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1292914765] [2020-10-22 02:15:24,914 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:24,916 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:24,922 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2020-10-22 02:15:24,922 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:24,952 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:24,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:24,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:24,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:24,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:24,953 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-10-22 02:15:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:24,978 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-10-22 02:15:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:24,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 02:15:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:24,980 INFO L225 Difference]: With dead ends: 135 [2020-10-22 02:15:24,980 INFO L226 Difference]: Without dead ends: 55 [2020-10-22 02:15:24,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-22 02:15:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-22 02:15:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-22 02:15:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-22 02:15:24,985 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-22 02:15:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:24,985 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-22 02:15:24,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-22 02:15:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:15:24,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:24,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:24,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:15:24,987 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:24,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:24,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1566003365, now seen corresponding path program 2 times [2020-10-22 02:15:24,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:24,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110545014] [2020-10-22 02:15:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:25,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110545014] [2020-10-22 02:15:25,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:25,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:15:25,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1131305483] [2020-10-22 02:15:25,058 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:25,060 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:25,069 INFO L252 McrAutomatonBuilder]: Finished intersection with 58 states and 106 transitions. [2020-10-22 02:15:25,069 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:25,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:25,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:15:25,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:25,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:15:25,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:25,191 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-22 02:15:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:25,223 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-10-22 02:15:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:15:25,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 02:15:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:25,224 INFO L225 Difference]: With dead ends: 69 [2020-10-22 02:15:25,225 INFO L226 Difference]: Without dead ends: 31 [2020-10-22 02:15:25,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:15:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-22 02:15:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-22 02:15:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-22 02:15:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-22 02:15:25,228 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-22 02:15:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:25,228 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-22 02:15:25,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:15:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-22 02:15:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:15:25,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:25,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:25,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:15:25,230 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:25,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1541967813, now seen corresponding path program 3 times [2020-10-22 02:15:25,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:25,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679734605] [2020-10-22 02:15:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:25,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679734605] [2020-10-22 02:15:25,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:25,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:25,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1807749152] [2020-10-22 02:15:25,295 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:25,297 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:25,304 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-10-22 02:15:25,304 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:25,348 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:25,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:15:25,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:25,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:15:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:25,350 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-22 02:15:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:25,415 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-22 02:15:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:15:25,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 02:15:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:25,416 INFO L225 Difference]: With dead ends: 30 [2020-10-22 02:15:25,416 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:15:25,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:15:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:15:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:15:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:15:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:15:25,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 02:15:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:25,418 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:15:25,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:15:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:15:25,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:15:25,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:15:25,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:15:25 BasicIcfg [2020-10-22 02:15:25,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:15:25,436 INFO L168 Benchmark]: Toolchain (without parser) took 5099.84 ms. Allocated memory was 140.5 MB in the beginning and 288.9 MB in the end (delta: 148.4 MB). Free memory was 100.7 MB in the beginning and 253.7 MB in the end (delta: -153.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:15:25,437 INFO L168 Benchmark]: CDTParser took 3.11 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-22 02:15:25,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.45 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:25,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:25,443 INFO L168 Benchmark]: Boogie Preprocessor took 35.11 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:25,444 INFO L168 Benchmark]: RCFGBuilder took 476.65 ms. Allocated memory is still 203.4 MB. Free memory was 155.3 MB in the beginning and 131.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:25,445 INFO L168 Benchmark]: TraceAbstraction took 3857.88 ms. Allocated memory was 203.4 MB in the beginning and 288.9 MB in the end (delta: 85.5 MB). Free memory was 130.6 MB in the beginning and 253.7 MB in the end (delta: -123.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:15:25,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.11 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.45 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.11 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.65 ms. Allocated memory is still 203.4 MB. Free memory was 155.3 MB in the beginning and 131.5 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3857.88 ms. Allocated memory was 203.4 MB in the beginning and 288.9 MB in the end (delta: 85.5 MB). Free memory was 130.6 MB in the beginning and 253.7 MB in the end (delta: -123.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 812 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 56 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2822 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 129 SDtfs, 78 SDslu, 191 SDs, 0 SdLazy, 61 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...