/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:43:48,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:43:48,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:43:48,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:43:48,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:43:48,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:43:48,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:43:48,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:43:48,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:43:48,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:43:48,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:43:48,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:43:48,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:43:48,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:43:48,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:43:48,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:43:48,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:43:48,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:43:48,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:43:48,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:43:48,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:43:48,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:43:48,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:43:48,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:43:48,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:43:48,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:43:48,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:43:48,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:43:48,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:43:48,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:43:48,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:43:48,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:43:48,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:43:48,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:43:48,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:43:48,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:43:48,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:43:48,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:43:48,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:43:48,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:43:48,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:43:48,960 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-NoLbe.epf [2021-01-20 14:43:49,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:43:49,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:43:49,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:43:49,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:43:49,020 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:43:49,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:43:49,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:43:49,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:43:49,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:43:49,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:43:49,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:43:49,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:43:49,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:43:49,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:43:49,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:43:49,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:43:49,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:43:49,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:43:49,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:43:49,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:43:49,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:43:49,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:49,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:43:49,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:43:49,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:43:49,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:43:49,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:43:49,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:43:49,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:43:49,027 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:43:49,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:43:49,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:43:49,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:43:49,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:43:49,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:43:49,465 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:43:49,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-01-20 14:43:49,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b4d7267/67319617d54e41ef97552dd5f86119d6/FLAG7f52fb84f [2021-01-20 14:43:50,188 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:43:50,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-01-20 14:43:50,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b4d7267/67319617d54e41ef97552dd5f86119d6/FLAG7f52fb84f [2021-01-20 14:43:50,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b4d7267/67319617d54e41ef97552dd5f86119d6 [2021-01-20 14:43:50,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:43:50,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:43:50,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:50,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:43:50,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:43:50,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:50" (1/1) ... [2021-01-20 14:43:50,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796b2d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:50, skipping insertion in model container [2021-01-20 14:43:50,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:50" (1/1) ... [2021-01-20 14:43:50,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:43:50,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:43:51,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:51,058 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:43:51,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:51,216 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:43:51,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51 WrapperNode [2021-01-20 14:43:51,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:51,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:51,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:43:51,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:43:51,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:51,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:43:51,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:43:51,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:43:51,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (1/1) ... [2021-01-20 14:43:51,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:43:51,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:43:51,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:43:51,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:43:51,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (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 [2021-01-20 14:43:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:43:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:43:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:43:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:43:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:43:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:43:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:43:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:43:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:43:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:43:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-20 14:43:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-20 14:43:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:43:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:43:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:43:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:43:51,511 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:43:52,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:43:52,169 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:43:52,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:52 BoogieIcfgContainer [2021-01-20 14:43:52,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:43:52,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:43:52,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:43:52,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:43:52,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:43:50" (1/3) ... [2021-01-20 14:43:52,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e284a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:52, skipping insertion in model container [2021-01-20 14:43:52,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:51" (2/3) ... [2021-01-20 14:43:52,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e284a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:52, skipping insertion in model container [2021-01-20 14:43:52,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:52" (3/3) ... [2021-01-20 14:43:52,181 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-01-20 14:43:52,201 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:43:52,201 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:43:52,207 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:43:52,208 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:43:52,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,244 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,245 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,246 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,248 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,248 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,248 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,251 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,251 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,251 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,251 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,252 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,252 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,252 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,252 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,252 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,253 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,253 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,253 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,255 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,263 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,263 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,263 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,264 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,270 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:52,272 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:43:52,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-20 14:43:52,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:43:52,311 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:43:52,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:43:52,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:43:52,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:43:52,311 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:43:52,311 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:43:52,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:43:52,326 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 89 transitions, 198 flow [2021-01-20 14:44:02,675 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:44:02,989 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:02,991 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:02,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:03,000 INFO L82 PathProgramCache]: Analyzing trace with hash -864945227, now seen corresponding path program 1 times [2021-01-20 14:44:03,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:03,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914916448] [2021-01-20 14:44:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:03,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914916448] [2021-01-20 14:44:03,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:03,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:03,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353164285] [2021-01-20 14:44:03,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:03,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:03,717 INFO L87 Difference]: Start difference. First operand has 54311 states, 54309 states have (on average 4.420317074518036) internal successors, (240063), 54310 states have internal predecessors, (240063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:05,679 INFO L93 Difference]: Finished difference Result 73967 states and 317811 transitions. [2021-01-20 14:44:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:05,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:44:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:06,411 INFO L225 Difference]: With dead ends: 73967 [2021-01-20 14:44:06,412 INFO L226 Difference]: Without dead ends: 25835 [2021-01-20 14:44:06,417 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:06,417 INFO L78 Accepts]: Start accepts. Automaton has 25835 states. Word has length 45 [2021-01-20 14:44:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:06,420 INFO L481 AbstractCegarLoop]: Abstraction has 25835 states. [2021-01-20 14:44:06,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 25835 states. [2021-01-20 14:44:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:44:06,500 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:06,501 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:06,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:44:06,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1139015446, now seen corresponding path program 1 times [2021-01-20 14:44:06,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:06,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103222632] [2021-01-20 14:44:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:06,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103222632] [2021-01-20 14:44:06,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:06,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:06,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800091820] [2021-01-20 14:44:06,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:06,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:06,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:06,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:06,711 INFO L87 Difference]: Start difference. First operand 25835 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:07,470 INFO L93 Difference]: Finished difference Result 28427 states and 119043 transitions. [2021-01-20 14:44:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:44:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:07,624 INFO L225 Difference]: With dead ends: 28427 [2021-01-20 14:44:07,624 INFO L226 Difference]: Without dead ends: 22379 [2021-01-20 14:44:07,625 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:07,626 INFO L78 Accepts]: Start accepts. Automaton has 22379 states. Word has length 47 [2021-01-20 14:44:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:07,627 INFO L481 AbstractCegarLoop]: Abstraction has 22379 states. [2021-01-20 14:44:07,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 22379 states. [2021-01-20 14:44:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:44:07,700 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:07,700 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:07,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:44:07,701 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1367050025, now seen corresponding path program 1 times [2021-01-20 14:44:07,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:07,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874469179] [2021-01-20 14:44:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:07,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874469179] [2021-01-20 14:44:07,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:07,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:07,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446782006] [2021-01-20 14:44:07,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:07,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:07,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:07,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:07,844 INFO L87 Difference]: Start difference. First operand 22379 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:08,499 INFO L93 Difference]: Finished difference Result 26123 states and 108715 transitions. [2021-01-20 14:44:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:08,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:44:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:08,632 INFO L225 Difference]: With dead ends: 26123 [2021-01-20 14:44:08,632 INFO L226 Difference]: Without dead ends: 21803 [2021-01-20 14:44:08,633 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:08,633 INFO L78 Accepts]: Start accepts. Automaton has 21803 states. Word has length 49 [2021-01-20 14:44:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:08,634 INFO L481 AbstractCegarLoop]: Abstraction has 21803 states. [2021-01-20 14:44:08,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 21803 states. [2021-01-20 14:44:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:44:08,725 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:08,725 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:08,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:44:08,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:08,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1400237191, now seen corresponding path program 1 times [2021-01-20 14:44:08,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817741226] [2021-01-20 14:44:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:08,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817741226] [2021-01-20 14:44:08,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:08,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:08,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129935328] [2021-01-20 14:44:08,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:08,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:08,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:08,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:08,836 INFO L87 Difference]: Start difference. First operand 21803 states. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:09,542 INFO L93 Difference]: Finished difference Result 35083 states and 143907 transitions. [2021-01-20 14:44:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:09,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 14:44:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:09,767 INFO L225 Difference]: With dead ends: 35083 [2021-01-20 14:44:09,768 INFO L226 Difference]: Without dead ends: 24107 [2021-01-20 14:44:09,768 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:09,768 INFO L78 Accepts]: Start accepts. Automaton has 24107 states. Word has length 50 [2021-01-20 14:44:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:09,769 INFO L481 AbstractCegarLoop]: Abstraction has 24107 states. [2021-01-20 14:44:09,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 24107 states. [2021-01-20 14:44:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:44:09,826 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:09,827 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:09,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:44:09,827 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -273017064, now seen corresponding path program 1 times [2021-01-20 14:44:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:09,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642153139] [2021-01-20 14:44:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642153139] [2021-01-20 14:44:09,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:09,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:44:09,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132930092] [2021-01-20 14:44:09,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:44:09,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:44:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:44:09,951 INFO L87 Difference]: Start difference. First operand 24107 states. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:10,578 INFO L93 Difference]: Finished difference Result 37331 states and 151141 transitions. [2021-01-20 14:44:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:44:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:44:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:10,759 INFO L225 Difference]: With dead ends: 37331 [2021-01-20 14:44:10,759 INFO L226 Difference]: Without dead ends: 22347 [2021-01-20 14:44:10,759 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:10,760 INFO L78 Accepts]: Start accepts. Automaton has 22347 states. Word has length 51 [2021-01-20 14:44:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:10,760 INFO L481 AbstractCegarLoop]: Abstraction has 22347 states. [2021-01-20 14:44:10,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 22347 states. [2021-01-20 14:44:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:44:10,807 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:10,807 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:10,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:44:10,807 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1854220962, now seen corresponding path program 2 times [2021-01-20 14:44:10,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:10,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439825954] [2021-01-20 14:44:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:10,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439825954] [2021-01-20 14:44:10,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:10,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:10,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428555468] [2021-01-20 14:44:10,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:10,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:10,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:10,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:10,990 INFO L87 Difference]: Start difference. First operand 22347 states. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:11,274 INFO L93 Difference]: Finished difference Result 24075 states and 97005 transitions. [2021-01-20 14:44:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:44:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:11,638 INFO L225 Difference]: With dead ends: 24075 [2021-01-20 14:44:11,639 INFO L226 Difference]: Without dead ends: 20043 [2021-01-20 14:44:11,641 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:11,642 INFO L78 Accepts]: Start accepts. Automaton has 20043 states. Word has length 51 [2021-01-20 14:44:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:11,644 INFO L481 AbstractCegarLoop]: Abstraction has 20043 states. [2021-01-20 14:44:11,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 20043 states. [2021-01-20 14:44:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:44:11,707 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:11,707 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:11,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:44:11,708 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1153343617, now seen corresponding path program 1 times [2021-01-20 14:44:11,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:11,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889108189] [2021-01-20 14:44:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:11,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889108189] [2021-01-20 14:44:11,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:11,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:44:11,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27484584] [2021-01-20 14:44:11,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:44:11,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:11,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:44:11,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:44:11,895 INFO L87 Difference]: Start difference. First operand 20043 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:12,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:12,467 INFO L93 Difference]: Finished difference Result 41835 states and 165821 transitions. [2021-01-20 14:44:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-20 14:44:12,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 14:44:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:12,544 INFO L225 Difference]: With dead ends: 41835 [2021-01-20 14:44:12,544 INFO L226 Difference]: Without dead ends: 20187 [2021-01-20 14:44:12,544 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-01-20 14:44:12,545 INFO L78 Accepts]: Start accepts. Automaton has 20187 states. Word has length 52 [2021-01-20 14:44:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:12,545 INFO L481 AbstractCegarLoop]: Abstraction has 20187 states. [2021-01-20 14:44:12,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 20187 states. [2021-01-20 14:44:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:44:12,588 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:12,589 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:12,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:44:12,589 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:12,590 INFO L82 PathProgramCache]: Analyzing trace with hash -613264223, now seen corresponding path program 1 times [2021-01-20 14:44:12,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:12,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553771486] [2021-01-20 14:44:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:12,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553771486] [2021-01-20 14:44:12,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:12,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:44:12,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504349312] [2021-01-20 14:44:12,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:44:12,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:44:12,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:44:12,718 INFO L87 Difference]: Start difference. First operand 20187 states. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:13,356 INFO L93 Difference]: Finished difference Result 24795 states and 96521 transitions. [2021-01-20 14:44:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:44:13,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-20 14:44:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:13,406 INFO L225 Difference]: With dead ends: 24795 [2021-01-20 14:44:13,407 INFO L226 Difference]: Without dead ends: 19419 [2021-01-20 14:44:13,407 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:13,417 INFO L78 Accepts]: Start accepts. Automaton has 19419 states. Word has length 53 [2021-01-20 14:44:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:13,418 INFO L481 AbstractCegarLoop]: Abstraction has 19419 states. [2021-01-20 14:44:13,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 19419 states. [2021-01-20 14:44:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:44:13,447 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:13,447 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:13,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:44:13,447 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1217531091, now seen corresponding path program 1 times [2021-01-20 14:44:13,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:13,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507296456] [2021-01-20 14:44:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:13,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507296456] [2021-01-20 14:44:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:13,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:44:13,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662709779] [2021-01-20 14:44:13,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:44:13,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:44:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:44:13,565 INFO L87 Difference]: Start difference. First operand 19419 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:13,866 INFO L93 Difference]: Finished difference Result 20655 states and 79051 transitions. [2021-01-20 14:44:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:44:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 14:44:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:13,906 INFO L225 Difference]: With dead ends: 20655 [2021-01-20 14:44:13,906 INFO L226 Difference]: Without dead ends: 15663 [2021-01-20 14:44:13,906 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:44:13,907 INFO L78 Accepts]: Start accepts. Automaton has 15663 states. Word has length 54 [2021-01-20 14:44:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:13,907 INFO L481 AbstractCegarLoop]: Abstraction has 15663 states. [2021-01-20 14:44:13,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15663 states. [2021-01-20 14:44:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 14:44:13,933 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:13,933 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:13,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:44:13,933 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1586012644, now seen corresponding path program 1 times [2021-01-20 14:44:13,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:13,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133251701] [2021-01-20 14:44:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:14,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133251701] [2021-01-20 14:44:14,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:14,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:44:14,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889001676] [2021-01-20 14:44:14,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:44:14,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:14,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:44:14,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:44:14,101 INFO L87 Difference]: Start difference. First operand 15663 states. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:14,434 INFO L93 Difference]: Finished difference Result 12396 states and 46101 transitions. [2021-01-20 14:44:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:44:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-01-20 14:44:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:14,462 INFO L225 Difference]: With dead ends: 12396 [2021-01-20 14:44:14,462 INFO L226 Difference]: Without dead ends: 8508 [2021-01-20 14:44:14,463 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:44:14,463 INFO L78 Accepts]: Start accepts. Automaton has 8508 states. Word has length 55 [2021-01-20 14:44:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:14,464 INFO L481 AbstractCegarLoop]: Abstraction has 8508 states. [2021-01-20 14:44:14,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 8508 states. [2021-01-20 14:44:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-20 14:44:14,758 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:14,759 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 14:44:14,759 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash -237436163, now seen corresponding path program 1 times [2021-01-20 14:44:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:14,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901366833] [2021-01-20 14:44:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:14,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901366833] [2021-01-20 14:44:14,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:14,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-20 14:44:14,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032212263] [2021-01-20 14:44:14,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-20 14:44:14,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:14,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-20 14:44:14,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-20 14:44:14,991 INFO L87 Difference]: Start difference. First operand 8508 states. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:15,304 INFO L93 Difference]: Finished difference Result 5484 states and 19683 transitions. [2021-01-20 14:44:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-20 14:44:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-01-20 14:44:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:15,310 INFO L225 Difference]: With dead ends: 5484 [2021-01-20 14:44:15,310 INFO L226 Difference]: Without dead ends: 2280 [2021-01-20 14:44:15,311 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-01-20 14:44:15,311 INFO L78 Accepts]: Start accepts. Automaton has 2280 states. Word has length 57 [2021-01-20 14:44:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:15,311 INFO L481 AbstractCegarLoop]: Abstraction has 2280 states. [2021-01-20 14:44:15,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:15,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states. [2021-01-20 14:44:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-20 14:44:15,317 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:44:15,317 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:44:15,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 14:44:15,318 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:44:15,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:44:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash 665182430, now seen corresponding path program 1 times [2021-01-20 14:44:15,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:44:15,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300282049] [2021-01-20 14:44:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:44:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:44:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:44:15,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300282049] [2021-01-20 14:44:15,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:44:15,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:44:15,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951925646] [2021-01-20 14:44:15,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:44:15,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:44:15,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:44:15,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:44:15,440 INFO L87 Difference]: Start difference. First operand 2280 states. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:44:15,540 INFO L93 Difference]: Finished difference Result 1956 states and 6832 transitions. [2021-01-20 14:44:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:44:15,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-01-20 14:44:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:44:15,541 INFO L225 Difference]: With dead ends: 1956 [2021-01-20 14:44:15,541 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:44:15,542 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:44:15,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 59 [2021-01-20 14:44:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:44:15,542 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:44:15,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:44:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:44:15,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:44:15,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-20 14:44:15,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:44:15 BasicIcfg [2021-01-20 14:44:15,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:44:15,550 INFO L168 Benchmark]: Toolchain (without parser) took 25073.53 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 277.2 MB in the beginning and 6.5 GB in the end (delta: -6.2 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,551 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:44:15,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.16 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.0 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,553 INFO L168 Benchmark]: Boogie Preprocessor took 79.42 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.6 MB in the end (delta: -40.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,554 INFO L168 Benchmark]: RCFGBuilder took 780.53 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 259.4 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,555 INFO L168 Benchmark]: TraceAbstraction took 23374.31 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 259.4 MB in the beginning and 6.5 GB in the end (delta: -6.2 GB). Peak memory consumption was 994.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:44:15,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 735.16 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.0 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 79.42 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.6 MB in the end (delta: -40.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * RCFGBuilder took 780.53 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 259.4 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 23374.31 ms. Allocated memory was 302.0 MB in the beginning and 7.5 GB in the end (delta: 7.2 GB). Free memory was 259.4 MB in the beginning and 6.5 GB in the end (delta: -6.2 GB). Peak memory consumption was 994.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.2s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.3s, HoareTripleCheckerStatistics: 1402 SDtfs, 2184 SDslu, 4477 SDs, 0 SdLazy, 507 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54311occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 83993 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...