/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:07:57,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:07:57,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:07:57,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:07:57,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:07:57,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:07:57,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:07:57,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:07:57,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:07:57,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:07:57,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:07:57,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:07:57,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:07:57,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:07:57,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:07:57,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:07:57,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:07:57,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:07:57,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:07:57,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:07:57,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:07:57,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:07:57,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:07:57,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:07:57,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:07:57,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:07:57,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:07:57,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:07:57,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:07:57,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:07:57,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:07:57,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:07:57,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:07:57,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:07:57,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:07:57,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:07:57,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:07:57,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:07:57,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:07:57,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:07:57,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:07:57,984 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.epf [2020-10-16 12:07:58,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:07:58,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:07:58,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:07:58,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:07:58,034 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:07:58,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:07:58,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:07:58,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:07:58,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:07:58,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:07:58,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:07:58,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:07:58,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:07:58,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:07:58,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:07:58,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:07:58,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:07:58,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:07:58,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:07:58,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:07:58,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:07:58,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:07:58,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:07:58,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:07:58,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:07:58,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:07:58,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:07:58,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:07:58,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:07:58,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:07:58,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:07:58,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:07:58,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:07:58,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:07:58,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 12:07:58,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06c4892d/feccfd0a84234be4a87242f17e8e3f87/FLAG93e754517 [2020-10-16 12:07:59,062 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:07:59,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 12:07:59,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06c4892d/feccfd0a84234be4a87242f17e8e3f87/FLAG93e754517 [2020-10-16 12:07:59,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f06c4892d/feccfd0a84234be4a87242f17e8e3f87 [2020-10-16 12:07:59,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:07:59,319 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:07:59,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:07:59,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:07:59,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:07:59,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:07:59" (1/1) ... [2020-10-16 12:07:59,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e167e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:07:59, skipping insertion in model container [2020-10-16 12:07:59,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:07:59" (1/1) ... [2020-10-16 12:07:59,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:07:59,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:07:59,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:07:59,951 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:08:00,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:08:00,085 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:08:00,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00 WrapperNode [2020-10-16 12:08:00,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:08:00,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:00,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:08:00,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:08:00,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:00,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:08:00,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:08:00,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:08:00,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (1/1) ... [2020-10-16 12:08:00,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:08:00,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:08:00,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:08:00,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:08:00,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (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 [2020-10-16 12:08:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:08:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:08:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:08:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:08:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:08:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:08:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:08:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:08:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:08:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:08:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:08:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:08:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:08:00,248 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:08:00,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:08:00,621 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:08:00,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:00 BoogieIcfgContainer [2020-10-16 12:08:00,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:08:00,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:08:00,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:08:00,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:08:00,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:07:59" (1/3) ... [2020-10-16 12:08:00,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121c9840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:00, skipping insertion in model container [2020-10-16 12:08:00,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:00" (2/3) ... [2020-10-16 12:08:00,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121c9840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:00, skipping insertion in model container [2020-10-16 12:08:00,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:00" (3/3) ... [2020-10-16 12:08:00,632 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-16 12:08:00,645 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:08:00,646 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:08:00,654 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:08:00,655 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:08:00,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,688 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,690 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,691 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,691 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,692 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,692 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,708 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,709 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,709 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:00,730 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:08:00,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:08:00,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:08:00,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:08:00,764 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:08:00,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:08:00,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:08:00,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:08:00,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:08:00,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:08:00,778 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:08:00,779 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:00,782 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:00,784 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 12:08:00,831 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 12:08:00,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:08:00,837 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:08:00,840 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:08:02,094 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-16 12:08:02,265 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 12:08:02,266 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 12:08:02,273 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 12:08:02,299 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 12:08:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 12:08:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:08:02,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:02,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:02,311 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:02,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 12:08:02,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:02,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202523582] [2020-10-16 12:08:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:02,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202523582] [2020-10-16 12:08:02,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:02,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:08:02,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255374] [2020-10-16 12:08:02,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:02,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:02,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:02,579 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 12:08:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:02,624 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-16 12:08:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:02,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:08:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:02,646 INFO L225 Difference]: With dead ends: 266 [2020-10-16 12:08:02,647 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 12:08:02,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 12:08:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 12:08:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 12:08:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 12:08:02,714 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-16 12:08:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:02,715 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 12:08:02,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 12:08:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:08:02,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:02,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:02,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:08:02,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-10-16 12:08:02,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:02,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062799020] [2020-10-16 12:08:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:02,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062799020] [2020-10-16 12:08:02,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:02,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:02,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869356545] [2020-10-16 12:08:02,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:02,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:02,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:02,800 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-16 12:08:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:02,833 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-16 12:08:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:08:02,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:08:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:02,837 INFO L225 Difference]: With dead ends: 254 [2020-10-16 12:08:02,837 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 12:08:02,838 INFO L677 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 [2020-10-16 12:08:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 12:08:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-16 12:08:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-16 12:08:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-16 12:08:02,857 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-16 12:08:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:02,857 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-16 12:08:02,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-16 12:08:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:08:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:02,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:02,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:08:02,860 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-10-16 12:08:02,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:02,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393765432] [2020-10-16 12:08:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:02,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393765432] [2020-10-16 12:08:02,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:02,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:02,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081081525] [2020-10-16 12:08:02,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:02,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:02,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:02,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:02,930 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-16 12:08:02,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:02,963 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-16 12:08:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:02,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:08:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:02,966 INFO L225 Difference]: With dead ends: 286 [2020-10-16 12:08:02,966 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 12:08:02,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 12:08:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-16 12:08:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 12:08:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-16 12:08:02,979 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-16 12:08:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:02,980 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-16 12:08:02,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-16 12:08:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:08:02,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:02,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:02,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:08:02,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:02,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-10-16 12:08:02,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:02,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222116413] [2020-10-16 12:08:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:03,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222116413] [2020-10-16 12:08:03,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:03,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:03,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040111153] [2020-10-16 12:08:03,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:03,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:03,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:03,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:03,048 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-16 12:08:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:03,076 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-16 12:08:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:03,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 12:08:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:03,077 INFO L225 Difference]: With dead ends: 174 [2020-10-16 12:08:03,077 INFO L226 Difference]: Without dead ends: 72 [2020-10-16 12:08:03,078 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 [2020-10-16 12:08:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-16 12:08:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-16 12:08:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 12:08:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-16 12:08:03,093 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-16 12:08:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:03,093 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-16 12:08:03,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-16 12:08:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:08:03,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:03,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:03,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:08:03,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-10-16 12:08:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:03,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812040734] [2020-10-16 12:08:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:03,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812040734] [2020-10-16 12:08:03,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:03,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:03,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989189276] [2020-10-16 12:08:03,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:03,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:03,197 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-16 12:08:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:03,242 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-10-16 12:08:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:03,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 12:08:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:03,244 INFO L225 Difference]: With dead ends: 85 [2020-10-16 12:08:03,244 INFO L226 Difference]: Without dead ends: 61 [2020-10-16 12:08:03,244 INFO L677 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 [2020-10-16 12:08:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-16 12:08:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-16 12:08:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-16 12:08:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-10-16 12:08:03,250 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-10-16 12:08:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:03,250 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-10-16 12:08:03,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:03,250 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-10-16 12:08:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:08:03,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:03,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:03,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:08:03,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-10-16 12:08:03,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:03,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638645414] [2020-10-16 12:08:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:03,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638645414] [2020-10-16 12:08:03,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:03,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:03,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310980311] [2020-10-16 12:08:03,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:08:03,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:03,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:08:03,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:03,307 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-10-16 12:08:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:03,345 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-16 12:08:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:08:03,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 12:08:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:03,346 INFO L225 Difference]: With dead ends: 62 [2020-10-16 12:08:03,347 INFO L226 Difference]: Without dead ends: 47 [2020-10-16 12:08:03,347 INFO L677 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 [2020-10-16 12:08:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-16 12:08:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-16 12:08:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-16 12:08:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-16 12:08:03,350 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-16 12:08:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:03,351 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-16 12:08:03,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:08:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-16 12:08:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:08:03,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:03,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:03,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:08:03,352 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-10-16 12:08:03,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:03,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552055818] [2020-10-16 12:08:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:03,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552055818] [2020-10-16 12:08:03,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:03,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:08:03,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936652375] [2020-10-16 12:08:03,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:08:03,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:03,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:08:03,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:08:03,408 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-16 12:08:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:03,455 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-16 12:08:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:08:03,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:08:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:03,456 INFO L225 Difference]: With dead ends: 44 [2020-10-16 12:08:03,456 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 12:08:03,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:08:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 12:08:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 12:08:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 12:08:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-16 12:08:03,460 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-16 12:08:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:03,460 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-16 12:08:03,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:08:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-16 12:08:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:08:03,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:03,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:03,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:08:03,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:03,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-10-16 12:08:03,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:03,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597381916] [2020-10-16 12:08:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:08:03,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597381916] [2020-10-16 12:08:03,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:03,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706438279] [2020-10-16 12:08:03,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:03,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:03,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:03,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:03,499 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-16 12:08:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:03,509 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-16 12:08:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:08:03,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:08:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:03,510 INFO L225 Difference]: With dead ends: 37 [2020-10-16 12:08:03,510 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:08:03,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:03,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:08:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:08:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:08:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:08:03,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:08:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:03,512 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:08:03,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:03,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:08:03,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:08:03,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:08:03,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:08:03 BasicIcfg [2020-10-16 12:08:03,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:08:03,519 INFO L168 Benchmark]: Toolchain (without parser) took 4200.77 ms. Allocated memory was 143.1 MB in the beginning and 244.8 MB in the end (delta: 101.7 MB). Free memory was 104.7 MB in the beginning and 171.1 MB in the end (delta: -66.3 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,520 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:08:03,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.87 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 162.1 MB in the end (delta: -57.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 204.5 MB. Free memory was 162.1 MB in the beginning and 160.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,523 INFO L168 Benchmark]: Boogie Preprocessor took 30.75 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,524 INFO L168 Benchmark]: RCFGBuilder took 456.19 ms. Allocated memory is still 204.5 MB. Free memory was 158.4 MB in the beginning and 136.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,524 INFO L168 Benchmark]: TraceAbstraction took 2892.62 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 136.2 MB in the beginning and 171.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:03,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.87 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 162.1 MB in the end (delta: -57.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 204.5 MB. Free memory was 162.1 MB in the beginning and 160.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.75 ms. Allocated memory is still 204.5 MB. Free memory was 160.2 MB in the beginning and 158.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.19 ms. Allocated memory is still 204.5 MB. Free memory was 158.4 MB in the beginning and 136.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2892.62 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 136.2 MB in the beginning and 171.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 680 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 157 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...