/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:20:06,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:20:06,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:20:06,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:20:06,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:20:06,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:20:06,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:20:06,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:20:06,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:20:06,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:20:06,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:20:06,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:20:06,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:20:06,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:20:06,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:20:06,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:20:06,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:20:06,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:20:06,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:20:06,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:20:06,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:20:06,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:20:06,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:20:06,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:20:06,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:20:06,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:20:06,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:20:06,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:20:06,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:20:06,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:20:06,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:20:06,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:20:06,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:20:06,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:20:06,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:20:06,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:20:06,905 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-keepdead.epf [2021-01-20 21:20:06,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:20:06,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:20:06,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:20:06,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:20:06,966 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:20:06,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:20:06,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:20:06,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:20:06,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:20:06,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:20:06,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:20:06,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:20:06,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:20:06,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:20:06,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:20:06,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:20:06,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:20:06,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:20:06,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:20:06,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:20:06,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:20:06,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:20:06,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:20:06,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:20:06,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:20:06,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:20:06,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:20:06,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:20:06,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:20:06,974 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:20:06,975 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:20:06,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:20:07,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:20:07,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:20:07,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:20:07,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:20:07,410 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:20:07,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-01-20 21:20:07,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f5347bf7/22323332875f4447a8a020cabb23cdfb/FLAGea6ed3d44 [2021-01-20 21:20:08,154 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:20:08,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-01-20 21:20:08,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f5347bf7/22323332875f4447a8a020cabb23cdfb/FLAGea6ed3d44 [2021-01-20 21:20:08,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f5347bf7/22323332875f4447a8a020cabb23cdfb [2021-01-20 21:20:08,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:20:08,435 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:20:08,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:20:08,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:20:08,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:20:08,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:20:08" (1/1) ... [2021-01-20 21:20:08,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229d883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:08, skipping insertion in model container [2021-01-20 21:20:08,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:20:08" (1/1) ... [2021-01-20 21:20:08,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:20:08,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:20:09,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:20:09,046 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:20:09,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:20:09,248 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:20:09,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09 WrapperNode [2021-01-20 21:20:09,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:20:09,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:20:09,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:20:09,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:20:09,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:20:09,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:20:09,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:20:09,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:20:09,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (1/1) ... [2021-01-20 21:20:09,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:20:09,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:20:09,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:20:09,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:20:09,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (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 21:20:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:20:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:20:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:20:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:20:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:20:09,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:20:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:20:09,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:20:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:20:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:20:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:20:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:20:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:20:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:20:09,515 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 21:20:09,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:20:09,931 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:20:09,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:20:09 BoogieIcfgContainer [2021-01-20 21:20:09,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:20:09,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:20:09,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:20:09,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:20:09,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:20:08" (1/3) ... [2021-01-20 21:20:09,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab995f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:20:09, skipping insertion in model container [2021-01-20 21:20:09,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:20:09" (2/3) ... [2021-01-20 21:20:09,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab995f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:20:09, skipping insertion in model container [2021-01-20 21:20:09,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:20:09" (3/3) ... [2021-01-20 21:20:09,943 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2021-01-20 21:20:09,957 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:20:09,957 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:20:09,961 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:20:09,963 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:20:10,001 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,002 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,002 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,002 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,003 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,003 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,003 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,003 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,004 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,004 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,005 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,005 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,005 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,006 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,006 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,006 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,006 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,006 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,007 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,007 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,008 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,008 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,008 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,009 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,009 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,010 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,013 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,013 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,019 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,019 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,019 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,020 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:20:10,025 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:20:10,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:20:10,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:20:10,064 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:20:10,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:20:10,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:20:10,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:20:10,065 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:20:10,065 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:20:10,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:20:10,078 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-20 21:20:10,894 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 21:20:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 21:20:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:20:11,015 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:11,016 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] [2021-01-20 21:20:11,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:11,024 INFO L82 PathProgramCache]: Analyzing trace with hash -736353114, now seen corresponding path program 1 times [2021-01-20 21:20:11,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:11,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986122774] [2021-01-20 21:20:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:11,780 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 21:20:11,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986122774] [2021-01-20 21:20:11,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:11,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:11,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933892290] [2021-01-20 21:20:11,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:11,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:11,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:11,858 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 21:20:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:12,315 INFO L93 Difference]: Finished difference Result 11327 states and 39207 transitions. [2021-01-20 21:20:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:20:12,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-01-20 21:20:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:12,321 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:12,322 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 39207 transitions. Word has length 41 [2021-01-20 21:20:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:12,324 INFO L481 AbstractCegarLoop]: Abstraction has 11327 states and 39207 transitions. [2021-01-20 21:20:12,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 21:20:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 39207 transitions. [2021-01-20 21:20:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:20:12,349 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:12,350 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] [2021-01-20 21:20:12,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:20:12,352 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1393810663, now seen corresponding path program 1 times [2021-01-20 21:20:12,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:12,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614519644] [2021-01-20 21:20:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:12,558 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 21:20:12,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614519644] [2021-01-20 21:20:12,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:12,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:12,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793878666] [2021-01-20 21:20:12,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:12,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:12,563 INFO L87 Difference]: Start difference. First operand 11327 states and 39207 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 21:20:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:13,098 INFO L93 Difference]: Finished difference Result 16127 states and 55447 transitions. [2021-01-20 21:20:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:20:13,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-01-20 21:20:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:13,102 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 21:20:13,102 INFO L78 Accepts]: Start accepts. Automaton has 16127 states and 55447 transitions. Word has length 43 [2021-01-20 21:20:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:13,103 INFO L481 AbstractCegarLoop]: Abstraction has 16127 states and 55447 transitions. [2021-01-20 21:20:13,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 21:20:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16127 states and 55447 transitions. [2021-01-20 21:20:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:20:13,142 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:13,142 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] [2021-01-20 21:20:13,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:20:13,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:13,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 565402146, now seen corresponding path program 1 times [2021-01-20 21:20:13,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:13,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732943416] [2021-01-20 21:20:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:13,407 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 21:20:13,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732943416] [2021-01-20 21:20:13,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:13,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:13,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929750035] [2021-01-20 21:20:13,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:13,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:13,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:13,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:13,424 INFO L87 Difference]: Start difference. First operand 16127 states and 55447 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 21:20:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:14,091 INFO L93 Difference]: Finished difference Result 24151 states and 82095 transitions. [2021-01-20 21:20:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:20:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2021-01-20 21:20:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:14,094 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:20:14,094 INFO L78 Accepts]: Start accepts. Automaton has 24151 states and 82095 transitions. Word has length 44 [2021-01-20 21:20:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:14,095 INFO L481 AbstractCegarLoop]: Abstraction has 24151 states and 82095 transitions. [2021-01-20 21:20:14,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 21:20:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 24151 states and 82095 transitions. [2021-01-20 21:20:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 21:20:14,124 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:14,124 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] [2021-01-20 21:20:14,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:20:14,124 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -676376959, now seen corresponding path program 1 times [2021-01-20 21:20:14,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:14,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483762231] [2021-01-20 21:20:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:14,421 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 21:20:14,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483762231] [2021-01-20 21:20:14,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:14,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:14,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725092491] [2021-01-20 21:20:14,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:14,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:14,433 INFO L87 Difference]: Start difference. First operand 24151 states and 82095 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 21:20:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:14,863 INFO L93 Difference]: Finished difference Result 39943 states and 133963 transitions. [2021-01-20 21:20:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:20:14,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-01-20 21:20:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:14,864 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 21:20:14,865 INFO L78 Accepts]: Start accepts. Automaton has 39943 states and 133963 transitions. Word has length 46 [2021-01-20 21:20:14,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:14,865 INFO L481 AbstractCegarLoop]: Abstraction has 39943 states and 133963 transitions. [2021-01-20 21:20:14,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 21:20:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 39943 states and 133963 transitions. [2021-01-20 21:20:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:20:14,903 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:14,903 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 21:20:14,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:20:14,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1519714679, now seen corresponding path program 1 times [2021-01-20 21:20:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:14,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66331951] [2021-01-20 21:20:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:15,204 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 21:20:15,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66331951] [2021-01-20 21:20:15,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:15,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:20:15,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429617266] [2021-01-20 21:20:15,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:20:15,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:15,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:20:15,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:20:15,208 INFO L87 Difference]: Start difference. First operand 39943 states and 133963 transitions. 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 21:20:15,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:15,585 INFO L93 Difference]: Finished difference Result 31299 states and 102436 transitions. [2021-01-20 21:20:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:20:15,586 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 21:20:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:15,587 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:15,587 INFO L78 Accepts]: Start accepts. Automaton has 31299 states and 102436 transitions. Word has length 47 [2021-01-20 21:20:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:15,588 INFO L481 AbstractCegarLoop]: Abstraction has 31299 states and 102436 transitions. [2021-01-20 21:20:15,588 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 21:20:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 31299 states and 102436 transitions. [2021-01-20 21:20:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:20:15,727 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:15,728 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] [2021-01-20 21:20:15,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:20:15,728 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:15,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:15,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2042804477, now seen corresponding path program 1 times [2021-01-20 21:20:15,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:15,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707291822] [2021-01-20 21:20:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:15,906 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 21:20:15,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707291822] [2021-01-20 21:20:15,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:15,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:15,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933416032] [2021-01-20 21:20:15,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:15,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:15,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:15,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:15,911 INFO L87 Difference]: Start difference. First operand 31299 states and 102436 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 21:20:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:16,305 INFO L93 Difference]: Finished difference Result 18033 states and 57430 transitions. [2021-01-20 21:20:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:20:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2021-01-20 21:20:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:16,306 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:20:16,307 INFO L78 Accepts]: Start accepts. Automaton has 18033 states and 57430 transitions. Word has length 48 [2021-01-20 21:20:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:16,307 INFO L481 AbstractCegarLoop]: Abstraction has 18033 states and 57430 transitions. [2021-01-20 21:20:16,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 21:20:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18033 states and 57430 transitions. [2021-01-20 21:20:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:20:16,330 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:16,330 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 21:20:16,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:20:16,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash -207995556, now seen corresponding path program 1 times [2021-01-20 21:20:16,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:16,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727681034] [2021-01-20 21:20:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:16,480 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 21:20:16,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727681034] [2021-01-20 21:20:16,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:16,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:20:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779559814] [2021-01-20 21:20:16,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:20:16,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:16,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:20:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:20:16,483 INFO L87 Difference]: Start difference. First operand 18033 states and 57430 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:20:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:17,016 INFO L93 Difference]: Finished difference Result 11571 states and 36475 transitions. [2021-01-20 21:20:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:20:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:20:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:17,019 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:20:17,019 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 36475 transitions. Word has length 50 [2021-01-20 21:20:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:17,019 INFO L481 AbstractCegarLoop]: Abstraction has 11571 states and 36475 transitions. [2021-01-20 21:20:17,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 21:20:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 36475 transitions. [2021-01-20 21:20:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:20:17,036 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:20:17,036 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 21:20:17,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:20:17,037 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:20:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:20:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash 848095813, now seen corresponding path program 1 times [2021-01-20 21:20:17,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:20:17,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327473758] [2021-01-20 21:20:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:20:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:20:17,142 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 21:20:17,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327473758] [2021-01-20 21:20:17,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:20:17,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:20:17,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229788257] [2021-01-20 21:20:17,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:20:17,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:20:17,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:20:17,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:20:17,145 INFO L87 Difference]: Start difference. First operand 11571 states and 36475 transitions. 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 21:20:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:20:17,416 INFO L93 Difference]: Finished difference Result 17174 states and 53588 transitions. [2021-01-20 21:20:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 21:20:17,420 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 21:20:17,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:20:17,420 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:20:17,421 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 53588 transitions. Word has length 52 [2021-01-20 21:20:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:20:17,424 INFO L481 AbstractCegarLoop]: Abstraction has 17174 states and 53588 transitions. [2021-01-20 21:20:17,424 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 21:20:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 53588 transitions. [2021-01-20 21:20:17,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:20:17,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:20:17,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:20:17 BasicIcfg [2021-01-20 21:20:17,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:20:17,461 INFO L168 Benchmark]: Toolchain (without parser) took 9026.26 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 271.1 MB in the beginning and 2.7 GB in the end (delta: -2.4 GB). Peak memory consumption was 379.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:17,462 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:20:17,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.96 ms. Allocated memory is still 302.0 MB. Free memory was 270.8 MB in the beginning and 263.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:17,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.64 ms. Allocated memory is still 302.0 MB. Free memory was 263.2 MB in the beginning and 262.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:20:17,464 INFO L168 Benchmark]: Boogie Preprocessor took 63.73 ms. Allocated memory is still 302.0 MB. Free memory was 262.1 MB in the beginning and 260.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:17,465 INFO L168 Benchmark]: RCFGBuilder took 517.95 ms. Allocated memory is still 302.0 MB. Free memory was 260.0 MB in the beginning and 238.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:17,468 INFO L168 Benchmark]: TraceAbstraction took 7523.45 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 236.9 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 347.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:20:17,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 810.96 ms. Allocated memory is still 302.0 MB. Free memory was 270.8 MB in the beginning and 263.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 96.64 ms. Allocated memory is still 302.0 MB. Free memory was 263.2 MB in the beginning and 262.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 63.73 ms. Allocated memory is still 302.0 MB. Free memory was 262.1 MB in the beginning and 260.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 517.95 ms. Allocated memory is still 302.0 MB. Free memory was 260.0 MB in the beginning and 238.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7523.45 ms. Allocated memory was 302.0 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 236.9 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 347.0 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 901 SDtfs, 1660 SDslu, 3026 SDs, 0 SdLazy, 355 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39943occurred in iteration=4, 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, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 43203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...