/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:21:36,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:21:36,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:21:36,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:21:36,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:21:36,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:21:36,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:21:36,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:21:36,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:21:36,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:21:36,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:21:36,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:21:36,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:21:36,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:21:36,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:21:36,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:21:36,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:21:36,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:21:36,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:21:36,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:21:36,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:21:36,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:21:36,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:21:36,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:21:36,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:21:36,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:21:36,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:21:36,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:21:36,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:21:36,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:21:36,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:21:36,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:21:36,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:21:36,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:21:36,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:21:36,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:21:36,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:21:36,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:21:36,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:21:36,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:21:36,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:21:36,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:21:36,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:21:36,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:21:36,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:21:36,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:21:36,995 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:21:36,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:21:36,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:21:36,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:21:36,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:21:36,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:21:36,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:21:36,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:21:36,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:21:36,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:21:36,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:21:36,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:21:36,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:21:36,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:21:36,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:21:36,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:21:36,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:21:36,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:21:36,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:21:36,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:21:36,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:21:36,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:21:36,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:21:36,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:21:36,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:21:37,279 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:21:37,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:21:37,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:21:37,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:21:37,300 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:21:37,301 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-17 22:21:37,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b3980c7/9a8a00feacda4777be9cfe5e09994235/FLAG90e166c63 [2020-04-17 22:21:37,948 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:21:37,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.opt.i [2020-04-17 22:21:37,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b3980c7/9a8a00feacda4777be9cfe5e09994235/FLAG90e166c63 [2020-04-17 22:21:38,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b3980c7/9a8a00feacda4777be9cfe5e09994235 [2020-04-17 22:21:38,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:21:38,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:21:38,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:38,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:21:38,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:21:38,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:38,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748702d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38, skipping insertion in model container [2020-04-17 22:21:38,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:38,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:21:38,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:21:38,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:38,844 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:21:38,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:38,975 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:21:38,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38 WrapperNode [2020-04-17 22:21:38,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:38,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:38,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:21:38,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:21:38,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:39,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:21:39,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:21:39,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:21:39,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (1/1) ... [2020-04-17 22:21:39,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:21:39,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:21:39,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:21:39,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:21:39,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (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 [2020-04-17 22:21:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:21:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:21:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:21:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:21:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:21:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:21:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:21:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:21:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:21:39,131 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:21:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:21:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:21:39,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:21:39,133 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:21:39,502 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:21:39,503 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:21:39,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:39 BoogieIcfgContainer [2020-04-17 22:21:39,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:21:39,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:21:39,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:21:39,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:21:39,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:21:38" (1/3) ... [2020-04-17 22:21:39,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ab8e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:39, skipping insertion in model container [2020-04-17 22:21:39,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:38" (2/3) ... [2020-04-17 22:21:39,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ab8e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:39, skipping insertion in model container [2020-04-17 22:21:39,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:39" (3/3) ... [2020-04-17 22:21:39,516 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2020-04-17 22:21:39,527 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:21:39,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:21:39,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:21:39,538 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:21:39,579 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,579 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,579 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,580 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,581 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,581 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,582 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,582 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,582 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,583 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,584 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,585 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,586 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,586 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,586 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,594 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,595 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,595 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,595 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,614 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,615 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,616 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,616 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,626 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,627 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,627 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,627 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:39,646 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:21:39,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:21:39,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:21:39,664 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:21:39,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:21:39,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:21:39,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:21:39,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:21:39,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:21:39,680 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:39,682 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:39,726 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:39,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:39,732 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. [2020-04-17 22:21:39,735 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:39,758 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:39,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:39,759 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. [2020-04-17 22:21:39,761 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:21:39,762 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:21:41,632 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 22:21:41,632 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:21:41,641 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:21:41,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:21:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:21:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:21:41,711 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:41,713 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:41,713 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 22:21:41,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:41,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323362113] [2020-04-17 22:21:41,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:42,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323362113] [2020-04-17 22:21:42,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:42,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:42,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515889082] [2020-04-17 22:21:42,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:42,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:42,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:42,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:42,071 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:21:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:42,167 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:21:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:42,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:21:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:42,199 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:21:42,200 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:21:42,202 INFO L678 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 [2020-04-17 22:21:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:21:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:21:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:21:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:21:42,285 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:21:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:42,287 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:21:42,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:21:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:21:42,289 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:42,289 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:42,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 22:21:42,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:42,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442162781] [2020-04-17 22:21:42,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:42,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442162781] [2020-04-17 22:21:42,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:42,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:42,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873025710] [2020-04-17 22:21:42,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:42,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:42,364 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-17 22:21:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:42,396 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:21:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:42,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:21:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:42,399 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:21:42,399 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:21:42,400 INFO L678 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 [2020-04-17 22:21:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:21:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:21:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:21:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:21:42,427 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:21:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:42,431 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:21:42,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:21:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:21:42,434 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:42,434 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:42,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-17 22:21:42,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:42,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338041017] [2020-04-17 22:21:42,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:42,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338041017] [2020-04-17 22:21:42,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:42,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:42,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994724625] [2020-04-17 22:21:42,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:42,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:42,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:42,546 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:21:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:42,559 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-17 22:21:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:42,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:21:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:42,561 INFO L225 Difference]: With dead ends: 194 [2020-04-17 22:21:42,562 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 22:21:42,563 INFO L678 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 [2020-04-17 22:21:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 22:21:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 22:21:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 22:21:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-17 22:21:42,588 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-17 22:21:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:42,588 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-17 22:21:42,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-17 22:21:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:21:42,592 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:42,592 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:42,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 22:21:42,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:42,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656344753] [2020-04-17 22:21:42,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:42,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656344753] [2020-04-17 22:21:42,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:42,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:42,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129455874] [2020-04-17 22:21:42,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:42,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:42,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:42,727 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-17 22:21:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:42,773 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-17 22:21:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:42,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:21:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:42,776 INFO L225 Difference]: With dead ends: 225 [2020-04-17 22:21:42,776 INFO L226 Difference]: Without dead ends: 161 [2020-04-17 22:21:42,776 INFO L678 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 [2020-04-17 22:21:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-17 22:21:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-17 22:21:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-17 22:21:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-17 22:21:42,790 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-17 22:21:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:42,790 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-17 22:21:42,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-17 22:21:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:21:42,795 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:42,795 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:42,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-17 22:21:42,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:42,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258389207] [2020-04-17 22:21:42,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:42,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258389207] [2020-04-17 22:21:42,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:42,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:42,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965698449] [2020-04-17 22:21:42,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:21:42,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:42,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:21:42,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:21:42,920 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-04-17 22:21:42,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:42,982 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-17 22:21:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:21:42,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:21:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:42,984 INFO L225 Difference]: With dead ends: 160 [2020-04-17 22:21:42,984 INFO L226 Difference]: Without dead ends: 123 [2020-04-17 22:21:42,985 INFO L678 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 [2020-04-17 22:21:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-17 22:21:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-17 22:21:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-17 22:21:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-17 22:21:42,997 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-17 22:21:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:42,998 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-17 22:21:42,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:21:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-17 22:21:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:21:43,002 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:43,003 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:43,003 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-17 22:21:43,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:43,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091118109] [2020-04-17 22:21:43,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:43,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091118109] [2020-04-17 22:21:43,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:43,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:21:43,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955851688] [2020-04-17 22:21:43,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:21:43,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:43,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:21:43,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:21:43,118 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-04-17 22:21:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:43,175 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-17 22:21:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:21:43,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:21:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:43,176 INFO L225 Difference]: With dead ends: 118 [2020-04-17 22:21:43,177 INFO L226 Difference]: Without dead ends: 108 [2020-04-17 22:21:43,177 INFO L678 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 [2020-04-17 22:21:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-17 22:21:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-17 22:21:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-17 22:21:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-17 22:21:43,181 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-17 22:21:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:43,182 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-17 22:21:43,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:21:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-17 22:21:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:43,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:43,183 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:43,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 22:21:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818486526] [2020-04-17 22:21:43,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:43,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818486526] [2020-04-17 22:21:43,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:43,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:43,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562094536] [2020-04-17 22:21:43,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:43,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:43,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:43,225 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-04-17 22:21:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:43,245 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-04-17 22:21:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:43,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:43,246 INFO L225 Difference]: With dead ends: 133 [2020-04-17 22:21:43,246 INFO L226 Difference]: Without dead ends: 54 [2020-04-17 22:21:43,246 INFO L678 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 [2020-04-17 22:21:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-17 22:21:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-17 22:21:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 22:21:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-04-17 22:21:43,249 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-04-17 22:21:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:43,250 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-04-17 22:21:43,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-04-17 22:21:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:43,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:43,250 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:43,251 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:43,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-17 22:21:43,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:43,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935922654] [2020-04-17 22:21:43,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:43,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935922654] [2020-04-17 22:21:43,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:43,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:43,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526403242] [2020-04-17 22:21:43,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:43,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:43,297 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-04-17 22:21:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:43,316 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-04-17 22:21:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:43,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:43,317 INFO L225 Difference]: With dead ends: 63 [2020-04-17 22:21:43,318 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 22:21:43,318 INFO L678 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 [2020-04-17 22:21:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 22:21:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 22:21:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 22:21:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-04-17 22:21:43,320 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-04-17 22:21:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:43,321 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-04-17 22:21:43,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-04-17 22:21:43,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:43,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:43,322 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:43,322 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:43,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-04-17 22:21:43,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:43,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218017310] [2020-04-17 22:21:43,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:43,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218017310] [2020-04-17 22:21:43,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:43,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:43,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996379948] [2020-04-17 22:21:43,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:43,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:43,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:43,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:43,362 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-04-17 22:21:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:43,387 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-04-17 22:21:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:43,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:43,388 INFO L225 Difference]: With dead ends: 51 [2020-04-17 22:21:43,388 INFO L226 Difference]: Without dead ends: 30 [2020-04-17 22:21:43,389 INFO L678 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 [2020-04-17 22:21:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-04-17 22:21:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-04-17 22:21:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 22:21:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-04-17 22:21:43,391 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-04-17 22:21:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:43,392 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-04-17 22:21:43,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-04-17 22:21:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:43,393 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:43,393 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:43,393 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 4 times [2020-04-17 22:21:43,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:43,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680376367] [2020-04-17 22:21:43,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:43,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680376367] [2020-04-17 22:21:43,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:43,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:43,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458697389] [2020-04-17 22:21:43,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:43,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:43,443 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-04-17 22:21:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:43,460 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-04-17 22:21:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:43,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:43,462 INFO L225 Difference]: With dead ends: 29 [2020-04-17 22:21:43,462 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:21:43,462 INFO L678 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 [2020-04-17 22:21:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:21:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:21:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:21:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:21:43,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:21:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:43,463 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:21:43,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:21:43,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:21:43,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:21:43 BasicIcfg [2020-04-17 22:21:43,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:21:43,474 INFO L168 Benchmark]: Toolchain (without parser) took 5249.62 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 103.1 MB in the beginning and 125.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,475 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.34 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 160.7 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,485 INFO L168 Benchmark]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,485 INFO L168 Benchmark]: RCFGBuilder took 446.73 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,492 INFO L168 Benchmark]: TraceAbstraction took 3961.85 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 134.7 MB in the beginning and 125.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:43,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.34 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 160.7 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.02 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.73 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 134.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3961.85 ms. Allocated memory was 203.9 MB in the beginning and 245.9 MB in the end (delta: 41.9 MB). Free memory was 134.7 MB in the beginning and 125.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 206 SDtfs, 144 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...